Species Descriptions

Argyreia ionantha

Author:
Staples, G. & P. Traiperm.
Contributors:
Distribution Map:
General comments:

It is entirely possible that Agyreia ionantha is conspecific with A. mastersii (Prain) Raizada, from NE India and Myanmar. The descriptions certainly sound similar. A careful comparison of material from across the region, including Prain’s types of the latter species, conserved at Calcutta, is necessary for settling the taxonomic concept to be followed.

Author:
Staples, G. & P. Traiperm.
Distribution:

Thailand. Endemic.

Ecology:

Often in partly
shaded situations in primary evergreen hill forest, mixed evergreen and pine
forest, secondary regrowth, and bamboo-rich disturbed evergreen forest; on clay
soils over granite bedrock; altitude: 800–1685 m.

Editor:
George Staples, Esmond Er
Flowers:
Flower sepals unequal, entire, ovate, outer 8–12 by c. 4.5 mm, hirsute outside, glabrous inside, acute to acuminate, inner 7–9 by c. 3 mm, acuminate, less hirsute; corolla campanulate, 4.5–5.0 cm long, whitish purple to pale purple outside, throat reddish pink, limb shallowly lobed, midpetaline bands long hirsute outside, inside glabrous; stamens included, filaments 15–20 mm, bases hairy; pistil included, disk cupular, shallowly 5-lobed; ovary 2-celled, glabrous, style c. 30 mm.
Fruits:
Berry 5–6 mm diam., dark red.
Habit:
Woody twiner, densely brown-fulvous tomentose; stems terete, glabrescent.
Inflorescences:
Inflorescences axillary, capitate-cymose, 3–6-flowered; peduncles 8–16 cm long; bracts oblong-lanceolate, 1.5–2.7 cm long, persistent; pedicels 0–4 mm long.
Accepted name/Authority/Place of publication:

Argyreia ionantha (Kerr) Khunwasi & Traiperm, Thai Forest Bull. (Bot.) 33: 42. 2005.

Leaves:
Leaves cordate or broadly ovate, 9.0–13.5 by 8.5–14.0 cm, subchartaceous, base broadly cordate, apex shortly and acutely acuminate, upper side appressed hirsute with bulbous-based hairs, underside softly appressed pubescent; lateral veins 7–9 per side; petiole 4–10 cm long.
Phenology:

Flowering: September, October; fruiting: January, February, November, December.

References:

Staples, G. & P. Traiperm. 2010. Argyreia in Convolvulaceae. Fl. Thailand 10(3): 337–371.

References:

Staples, G. & P. Traiperm. 2010. Argyreia in Convolvulaceae. Fl. Thailand 10(3): 337–371.

Seeds:
Seeds c. 4 mm long, dark brown, glabrous.
Synonyms:

Lettsomia ionantha Kerr, Bull. Misc. Inform. Kew 1941: 15. 1941. TYPE. Thailand. Chiang Mai, Doi Phra Kao, Garrett 738 (isotypes BKF, L, P).

Mon, 2011-09-26 02:06 -- Esmond
Argyreia hylophila

Author:
Staples, G. & P. Traiperm.
Contributors:
Distribution Map:
General comments:

General comments. Known from only 2 collections, A. hylophila remains one of the enigmatic species in the Thai flora. There is considerable distance between the two provinces where it has been collected (Nakhon Sawan and Ubon Ratchathani) and it seems surprising that the species, which has large, showy flowers, has not been collected anywhere in between during the past 65 years.

Author:
Staples, G. & P. Traiperm.
Distribution:

Thailand. Endemic.

Ecology:

In the undergrowth of deciduous forest and
mixed scrub dipterocarp forest on sandy soil; altitude: c. 100 m.

Editor:
George Staples, Esmond Er
Flowers:
Flower sepals unequal, outer 2 ovate-elliptic, 9–10 mm, appressed puberulent, concave basally, apex obtuse, undulate, inner ovate, narrower, less hairy; corolla broadly funnelform, c. 5 cm long, purple, glabrous, limb 5-angled; stamens equal, 18–19 mm, filament bases sparsely pilose, anthers oblong, minutely apiculate; pistil included, 25–27 mm long, disc annular, ovary conical, glabrous, style glabrous, jointed above base.
Fruits:
Berry globose, c. 8–9 mm diam., blackish, accrescent calyx reflexed, sepals 12–13 mm, inside glossy brown, minutely pitted.
Habit:
Prostrate or twining, from woody rootstock; stems 1–2 m long, innovations puberulent.
Inflorescences:
Inflorescences axillary, cymose, 1–few-flowered; peduncle 0–0.5 cm; bracts 2, linear, 0.3–0.4 mm, tardily deciduous; pedicels 3–6 mm, thicker apically.
Accepted name/Authority/Place of publication:

Argyreia hylophila (Kerr) Staples & Traiperm, Thai Forest Bull. (Bot.) 36: 97. 2008.

Leaves:
Leaves oblong, elliptic, or elliptic-obovate, 3.5–10 by 1.3–4.5 cm, upper side glabrous, minutely papillose, underside appressed pilose, base rounded or broadly cuneate, apex rounded to truncate, mucronate; lateral veins 7–9 per side; petiole slender, 0.6–2 cm.
Phenology:

Flowering: November; fruiting: November.

References:

Staples, G. & P. Traiperm. 2010. Argyreia in Convolvulaceae. Fl. Thailand 10(3): 337–371.

References:

Staples, G. & P. Traiperm. 2010. Argyreia in Convolvulaceae. Fl. Thailand 10(3): 337–371.

Seeds:
Seeds 2, hemispherical, c. 5–6 mm, black, glabrous.
Synonyms:

Ipomoea hylophila Kerr, Bull. Misc. Inform. Kew 1941: 17. 1941. TYPE: Thailand. Nakhon Sawan: Raheng, Ban Pa Yang, Kerr 4579 (isotypes A, BK, E, K, TCD).

Mon, 2011-09-26 02:01 -- Esmond
Argyreia hookeri

Author:
Staples, G. & P. Traiperm.
Contributors:
Distribution Map:
Author:
Eckart Eich
Chemical Data:

Simple pyrrolidine alkaloids (epigeal vegetative parts): hygrine, cuscohygrine, propylhygrines, phygrine. # Simple tropane alkaloids (epigeal vegetative parts): tropan-3-one (= tropinone), 3a-hydroxytropane ( = tropine). # Nicotinoids (epigeal vegetative parts): Nicotine. # Calystegines (leaves): B₁, B₄, C₁. # ß-Carboline alkaloids (epigeal vegetative parts): harman, norharmane. # Ergoline alkaloids (seeds): chanoclavine-I, elymoclavine, lysergic acid amide (= ergine).

Author:
Staples, G. & P. Traiperm.
Distribution:

Nepal, India, Bhutan, Myanmar, Thailand, Indonesia (naturalized on Java).

Ecology:

Dry savannah
forest, mixed deciduous forest rich in bamboo, reported on limestone; altitude:
200–750 m.

Editor:
George Staples, Esmond Er
Flowers:
Flower sepals lanceolate, acute, apex recurved, 3 outer 10–12 mm long, inner c. 9 mm, thinly white sericeous outside and inside at apex; corolla tubular-funnelform, 5.5–7 cm long, pink-purple, darker in centre, limb subentire, midpetaline bands hairy outside, otherwise glabrous; stamens included, filaments pilose basally; pistil included, ovary glabrous, 4-celled.
Fruits:
Berries globose, 15–20 mm diam.
Habit:
Herbaceous climber; stems robust, 3–10 m long, greyish-hairy.
Inflorescences:
Inflorescence long-stalked, few to many-fowered, cymosely branched; peduncle 8–28 cm long; lower bracts foliose, lanceolate or oblong-lanceolate, 1.0–1.8 cm long, diminishing above, whitish sericeous outside; pedicels 5–8 mm, greyish appressed hairy.
Accepted name/Authority/Place of publication:

Argyreia hookeri C.B.Clarke in Hook.f., Fl. Brit. Ind. 4: 185. 1883.

Leaves:
Leaves broadly ovate to orbicular, 8–18 by 8–18 cm, base cordate, apex shortly acuminate, mucronulate, upper side glabrous or nearly so, underside sparsely hairy, more densely along veins; lateral veins 9–11 pairs; petiole 4–7 cm, hairy like stem.
Phenology:

Flowering: July, November.

References:

Staples, G. & P. Traiperm. 2010. Argyreia in Convolvulaceae. Fl. Thailand 10(3): 337–371.

References:

Simple pyrrolidine alkaloids, simple tropane alkaloids, nicotinoids, ß-carboline alkaloids: Eich, E. 2008. # Calystegines: Schimming, T, et al. 2005. # Ergoline alkaloids: Eich, E. 2008. # Chemical structures: Chemistry of Convolvulaceae (family overview).

References:

Staples, G. & P. Traiperm. 2010. Argyreia in Convolvulaceae. Fl. Thailand 10(3): 337–371.

Seeds:
Seeds 4 or fewer, black.

Mon, 2011-09-26 01:48 -- Eckart Eich

Ipomoea kituiensis

Acknowledgements:

This species page was produced as part of the project ‘Expanding the scope of African Digital Plant Resources’ funded by the World Collections Programme.

Author:

Javier A. Luna

Contributors:

Distribution Map:

General comments:

Verdcourt (1967) suggested that I. ktuiensis, I. chrysosperma and I. spathulata form a good exampleof a super-species where the components are recognizably distinctive but thereis still a considerable interchange of genes.

Author:

Javier A. Luna

Distribution:

Kenya, Ethiopia, Tanzania, Malawi, Zimbabwe, Zambia

Ecology:

Acacia-Commiphora woodland, evergreen scrub, savanna, thickets by stream and along rivers, semi-desert country on stony hills, waste land or cultivated ground; 600–2040 m.

Editor:

Javier A Luna, Mark A. Carine, Sebsebe Demissew.

Flowers:

Sepals linear-lanceolate to ovate, 7–21 x 2–6 mm, hirsute or appressed velutinous to pilose. Corolla white, cream, pink to purple or rarely pale blue, centre deeper purple; infundibular, 5–8 cm long; midpetaline areas hirsute, pubescent or pilose; tube narrowed below.

Fruits:

Capsule ellipsoid, 15–20 mm long.

Habit:

Suberect, twining shrub or small bushy tree, up to 4(–6) m tall; stems with milky latex, pubescent or hirsute with leaf scars prominent in Zambian specimens.

Inflorescences:

Flowers in 2.5–6(–12)-flowered branched inflorescence; peduncle 1.5–16(–20) cm long; pedicels 3–10(–20) mm long; bracts linear-lanceolate, 10–15 x 2 mm.

Infraspecific Characters:

Three varieties are recognised with var. kituiensis spread over the south of Ethiopia, Kenya, Tanzania, Malawi and Zimabwe; var. massaiensis restricted to Tanzania and var. hirsutissima also restricted to Tanzania. Var. kituiensis and var. massaiensis can be distinguished by their sepals that are: linear- laceolate, 10–21 x 2–4 mm in var. ktuiensis; broadly triangular to ovate, 7–10 x 4.5–6mm in var. massaiensis. Var. hirsutissima is distinguished by its hirsute sepals, leaves, stems and corolla.

Phylogeny and infrageneric relationships:

Menos et al. (2001) performed a phylogenetic analysis of Ipomoeeae using the ITS region and the 3' region of the nuclear gene waxy. DNA samples of I. kituiensis (MWC8344 K) were included.
From a combined molecular and morphological analysis of 45 taxa it has been found that I. Kituiensis and I. jaegeri form a monophyletic group (subgenus Poliothamnus (Verdcourt 1963)) related with all taxa previously assigned to tribe Agryreieae, Lepistemon and six species of Ipomoea from five different sections.

Accepted name/Authority/Place of publication:

Ipomoea kituiensis Vatke in Linnaea 43: 511 (1882). Type: Kenya, Kitui, Hildebrandt 2759 (B holo. destroyed).

Leaves:

Lamina ovate to reniform, 3.5–17.5 x 3.2–17 cm; apex obtuse, apiculate, acuminate or even bilobed; base cordate; sparsely pubescent, hirsute or glabrous above; finely pubescent or glabrescent below; margins sometimes pilose; petiole 1–10(–17.5) cm long.

Phenology:

Number of collections seen: 23

months	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
# flowering specimens			4	2	1	1					2	5
# fruiting specimens				1	2		1					4

References:

Demissew, S. 2006. Convolvulaceae. In: Hedberg, I., E. Kelbessa, S. Edwards, S. Demissew and E. Persson (eds.), Flora of Ethiopia and Eritrea, vol. 5, pp. 227–231. The National Herbarium Addis Ababa University and The Department of Systematic Botany Uppsala University; Addis Ababa, Ethiopia and Uppsala, Sweden.

Gonçalves, M. L. 1987. Convolvulaceae. In: Launert, E. (ed.), Flora Zambesiaca, vol. 8, part 1, pp. 123. Flora Zambesiaca Management Committee, London.

Verdcourt, B. 1963. Convolvulaceae. In: Hubbard, C.E. and E. Milne-Redhead (eds.), Flora of Tropical East Africa, pp. 144–145. Crown Agent for Overseas governments and administrations, London.

References:

Gonçalves, M. L. 1987. Convolvulaceae. In: Launert, E. (ed.), Flora Zambesiaca, vol. 8, part 1, pp. 123. Flora Zambesiaca Management Committee, London.

Manos, P. S, R. E. Miller, P. Wilkin. 2001. Phylogenetic Analysis of Ipomoea, Argyreia, Stictocardia, and Turbina Suggests a Generalized Model of Morphological Evolution in Morning Glories. Systematic Botany 26(3): 585–602.

Verdcourt, B. 1963. Convolvulaceae. In: Hubbard, C.E. and E. Milne-Redhead (eds.), Flora of Tropical East Africa, pp. 144–145. Crown Agent for Overseas governments and administrations, London.

Verdcourt, B. 1967. Corrections and Additions to the 'Flora of Tropical East Africa: Convolvulaceae': I. Kew Bulletin 21(1): 83–92.

Seeds:

ovoid, 7–9 x 5–6 mm, covered with golden hairs, 6–10 mm long along the margins, shorter in other parts.

Synonyms:

Ipomoea massaiensis Pilgerin E. J. 48: 351 (1912); T.T.C.L.: 171 (1949).

Ipomoea nykensis Hall. f. in Engl., Bot. Jahrb. 28: 53 (1899). Baker & Rendle in F.T.A. 4, 2: 196 (1906).

Ipomoea tambelensis Baker in Kew Bull. 1894: 72 (1894). Dammer in Engl., Pflanzenw Ost–Afr. C: 333 (1895).

Rivea kituiensis (Vatke) Hall. f. in Engl., Bot. Jahrb. 18: 156 (1893).

Ipomoea hildebrandtii subsp. megaensis

Author:

Javier A. Luna

Distribution Map:

Author:

Javier A. Luna

Distribution:

Kenya and Ethiopia

Ecology:

Upland scrub or open grassland with scattered trees or bushes on red or black loamy soil, waste ground near villages, 600–2100 m.

Flowers:

Sepals narrowly elliptic or lanceolate, 2.5–3 times longer than wide; the outer silvery-velutinous, obtuse or acute; the inner shorter, hairy in the middle and apiculate. Corolla infundibular, entirely purple, 4–5.5 cm long, sparsely puberulent.

Fruits:

Capsule globose, about 10–17 cm long.

Habit:

Shrublet up to 1 m tall; stems with milky latex and covered with soft grey pubescence.

Inflorescences:

Solitary or in 2–3 flowered cymes, peduncle hairy, 2–10 cm long; bracts deciduous, 2.5–3 times longer than wide, silky-tomentose to villous; secondary peduncles and pedicels 0.2–1 cm long.

Accepted name/Authority/Place of publication:

Ipomoea hildebrandtii subsp. megaensis Verdec., in Webbia 13: 326 (1958). Type: cultivated in Nairobi from seeds collected in Sidamo region on Mega Mt., Bally in E.A.H. 11186 (EA holo.).

Leaves:

Lamina ovate to broadly elliptic, 2–22 x 3.5–17 cm; base rounded to subtruncate or sometimes subcordate; apex acute; glabrous, glabrescent or rarely pubescent above; puberulent beneath; nerves and margin silvery puberulent; petiole 2.5–20 cm long with two glands at the top.

Phenology:

Number of collections seen: 5

months

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

# flowering specimens

# fruiting specimens

References:

Demissew, S. 2006. Convolvulaceae. In: Hedberg, I., E. Kelbessa, S. Edwards, S. Demissew and E. Persson (eds.), Flora of Ethiopia and Eritrea, vol. 5, pp. 227–231. The National Herbarium Addis Ababa University and The Department of Systematic Botany Uppsala University; Addis Ababa, Ethiopia and Uppsala, Sweden.

Verdcourt, B. 1963. Convolvulaceae. In: Hubbard, C.E. and E. Milne-Redhead (eds.), Flora of Tropical East Africa, pp. 144–145. Crown Agent for Overseas governments and administrations, London.

Verdcourt, B. (1962). Notes from the East Africa Herbarium: XIII. Kew Bulletin 15(3): 443–445.

References:

Verdcourt, B. 1963. Convolvulaceae. In: Hubbard, C.E. and E. Milne-Redhead (eds.), Flora of Tropical East Africa, pp. 144–145. Crown Agent for Overseas governments and administrations, London.

Verdcourt, B. (1962). Notes from the East Africa Herbarium: XIII. Kew Bulletin 15(3): 443–445.

Seeds:

globular, angular, 7–8 x 5–6 mm, covered with dark brown adpressed hairs and also bearing an apical tuft.

Cuscuta acuta

Author:
Mihai Costea
Author:
Mihai Costea
Distribution:

South America: Galapagos Islands and the Pacific Coast of Ecuador and Peru.

Ecology:

Hosts: Alternanthera, Coldenia, Boerhavia, Euphorbia, Ipomoea, Pectis, Portulaca, Rhynchosia and Tribulus;elevation

40–160 m.

Flowers:
5-merous, 2.5–3.6(–4.0) mm, membranous, white when fresh, creamy-brown when dried; papillae absent, laticifers evident in the bracts, calyx, corolla, tips of infrastaminal scale fimbriae, and ovary, isolated or in rows, ovoid to elongate; calyx 1.6–2.3(–2.6) mm, straw-yellow to brown, not reticulate or shiny, campanulate, longer than corolla tube, divided ca. 2/3 the length, tube 0.4–0.8 mm, lobes (unequal) 0.7–1.5 mm, 12 not basally overlapping, ovate-triangular, not carinate, margins entire, apex acuminate; corolla 1.8–3.3(–3.8) mm, tube 0.9–1.7 mm, campanulate, lobes 0.9–1.9 mm, initially erect, later reflexed, ca. as long or slightly longer than the tube, ovatelanceolate, margins entire, apex acute to acuminate, straight; stamens exserted, shorter than the lobes, anthers 0.33–0.40 × 0.20–0.25 mm, broadly ovate to oblong, filaments 0.4–0.7 mm; infrastaminal scales extremely thin, 0.9–1.7 mm long, equaling the tube, bridged at 0.15–0.30 mm, obovate to oblong, uniformly dense-fringed, fimbriae 0.15–0.30 mm; styles 0.4–1.1 mm, shorter or equaling the ovary, slightly subulate at the base, filiform in the rest.
Fruits:
Capsules indehiscent, 1.7–2.5 × 0.9–1.4 mm, globose-depressed, thickened around the moderate interstylar aperture, translucent, surrounded by the withered corolla.
Habit:
Annual parasite; stems 0.2-0.3 mm, yellow-orange.
Inflorescences:
Dense umbelliform, confluent; pedicels 0.6–3.0 mm; bracts 1 at the base of clusters and 0–1 at the base of pedicels, 1.5–2.8 mm long, triangular-ovate, margins entire, apex acuminate.
Accepted name/Authority/Place of publication:

Cuscuta acuta Engelm. in Trans. Acad. Sci. St. Louis 1: 497. 1859

References:

Austin, D.F. 1982. 165. Convolvulaceae. Pp. 1–98 in: Harling, G. & Sparre, B. (eds.), Flora of Ecuador, vol. 15. Göteborg, Stockholm:University of Götenborg, Riksmuseum.

Costea,M., S. Stefanović. 2010. Evolutionary history and taxonomy of Cuscuta umbellata complex (Convolvulaceae): evidence of extensive hybridizationfrom discordant nuclear and plastid phylogenies. Taxon 59: 1783–1800.

Costea, M. 2007-onwards. Digital Atlas of Cuscuta. Images: type collection morphology gallery; additional island specimen morphology gallery; morphology of mainland specimen.

Engelmann, G. 1859. Systematic arrangement of the species of the genus Cuscuta with critical remarks on old species and descriptions of new ones. Trans. Acad. Sci. St. Louis 1: 453–523.

Yuncker, T.G. 1932. The genus Cuscuta. Mem. Torrey Bot. Club 18: 113–331.

Seeds:
4 per capsule, 0.7–1.2 × 0.7–1.0 mm, subround to round.

Fri, 2011-09-23 15:39 -- Mihai Costea

Ipomoea hildebrandtii

Acknowledgements:

This species page was produced as part of the project ‘Expanding the scope of African Digital Plant Resources’ funded by the World Collections Programme.

Author:

Javier A. Luna

Contributors:

Distribution Map:

Common names and uses:

It is used medicinally in Uganda base on herbarium label data (Bagshawe & Camb 1585 BM).

Author:

Javier A. Luna

Distribution:

Kenya, Tanzania, Uganda, Ethiopia, Democratic Republic of the Congo, Rwanda.

Ecology:

Open grassland with scattered trees or bushes and/or upland scrub; 400–1700 (–2000) m.

Editor:

Javier A Luna, Mark A. Carine, Sebsebe Demissew.

Flowers:

Sepals elliptic, oblong or oblong lanceolate; outer sepals 10–25 x 5–11 mm, obtuse or acute, pubescent or woolly; inner sepals shorter, hairy in the middle and apiculate. Corolla infundibular, white or purple with different tube-limb colour combinations in each subspecies, 4–11.5 cm long, sparsely puberulous.

Fruits:

Capsule globose, about 12–17 cm long.

Habit:

Very variable, sub-woody shrublet, 1–4 m tall; stems covered with soft grey pubescence.

Inflorescences:

solitary flowers or in 2–10 dense or lax branched cymes; peduncle hairy, 1–18 cm long; bracts deciduous, 1–2.6 x 0.5–1.4 cm; secondary peduncles and pedicels 2–20 cm long.

Infraspecific Characters:

Three subspecies are recognised with subsp. grantii spread in Uganda, Kenya,Tanzanya, Democratic Republic of the Congo and Rwanda; subsp. hildebrantii restricted to Kenya and Tanzania; and subsp. megaënsis restricted to Kenya and southern Ethiopia. The three are distinguished by the corolla length (4–8.5 cm in subsp. grantii (5.7–)7–11.5 cm in subsp. hildebrantii and 4–5.5 cm in subsp. megaënsis), the corolla colour (in the same order purple with pale or white limb; limb pale, white or purple; and all purple); the bracts and sepal indumentum type (pubescent; hairy or villous; and silky-tomentose to villous respectively); and the bracts and sepals length to breath ratio of ((2.25–)2.9–4.16, 1.63–2.8 and 2.4–3.12 respectively).

Accepted name/Authority/Place of publication:

Ipomoea hildebrandtii Vatke in Linnaea. 43: 511 (1882); Bak. & Rendle in F.T.A. 4(2): 193 (1906); T.T.C.L.: 171 (1949); Verde. in Webbina 13:325 (1958). Type: Kenya, Teita, Buitchuma, Hildebrandt 2843 (B holo. Destroyed).

Leaves:

Phenology:

Number of collections seen: 11

months

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

# flowering specimens

# fruiting specimens

References:

Maquet, P., Convovulaceae. 1985. In: Troupin, G. (ed.), Flore du Rwanda, Spermatophytes, vol, 3, pp. 231–254. Agence de Cooperation Culturelle et Technique, Liège.

Verdcourt, B. 1963. Convolvulaceae. In: Hubbard, C.E. and E. Milne-Redhead (eds.), Flora of Tropical East Africa, pp. 144–145. Crown Agent for Overseas governments and administrations, London.

References:

Maquet, P., Convovulaceae. 1985. In: Troupin, G. (ed.), Flore du Rwanda, Spermatophytes, vol, 3, pp. 231–254. Agence de Cooperation Culturelle et Technique, Liège.

Verdcourt, B. 1963. Convolvulaceae. In: Hubbard, C.E. and E. Milne-Redhead (eds.), Flora of Tropical East Africa, pp. 144–145. Crown Agent for Overseas governments and administrations, London.

Verdcourt, B. 1962. Notes from the East Africa Herbarium: XIII. Kew Bulletin 15(3): 443–445.

Seeds:

globular, angular, 7–8 x 5–6 mm, covered with dark brown adpressed hairs and also bearing an apical tuft.

Synonyms:

Ipomoea decora Vatke & Hildebr. in Monatschr. Ver. Gart. Preuss. Stat. 22: 139, t.2 (1879), non Meisn. (1869), nom. Illegit.

Rivea decora (Vatke & Hildebr.) Hall. F. in E.J. 18: 156 (1893).

Argyreia populifolia Choisy var. africana Oliv. in T.L.S. 29: 114 (1875).

Ipomoea populifolia sensu Hall. F in E.J. 28: 53 (1899) quoad Speke & Grant 627, non (Choisy) Hall. F.

Ipomoea gillei Staner in Ann. Soc. Sc. Brux. 58: 109 (1938).

Ipomoea donaldsonii

Acknowledgements:

This species page was produced as part of the project ‘Expanding the scope of African Digital Plant Resources’ funded by the World Collections Programme.

Author:

Javier A. Luna

Contributors:

Distribution Map:

General comments:

In the wild theleaves are 2–14 x 3–20 mm, however cultivated specimens (Verd. s.n. K) can reach up to 24 x 37 mm.

Author:

Javier A. Luna

Distribution:

Kenya, Ethiopia, Somalia.

Ecology:

Acacia-Commiphora bushland on sandy or stony ground; 150–1800 m.

Editor:

Javier A Luna, Mark A. Carine, Sebsebe Demissew.

Flowers:

Sepals ovate to suborbicular, obtuse, glabrous or pubescent, margins ciliate, the outer 2–4 x 2–3.5 mm, the inner 3–5 x 2–4 mm. Corolla purple or white, if white with purple or mauve centre, silvery pubescent on the midpetaline areas, broadly infundibular 1.5–3 cm long.

Fruits:

Capsule ovoid, 4-valved, 7–9 mm long.

Habit:

Erect shrub or shrublet up to 1–3 m tall, occasionally with scandent branches, branchlets pointed and often becoming ± spinescent with age; stems black or dark brown, young stems shortly lanate, older stems with bark peeling off.

Inflorescences:

Solitary flowers axillary or a few together on short shoots; sessile or with peduncle up to 15 mm long; bracts minute and soon falling.

Accepted name/Authority/Place of publication:

Ipomoea donaldsonii Rendle in J. Bot. 34: 37 (1896). Type: Ethiopia, Schebeli (Shebelle) river valley, Donaldson Smith 26 (BM lectotype).

Leaves:

Mostly on short-shoots; lamina reniform to spathulate, 2–14 x 3–20 mm; base cordate to truncate; apex obtuse or emarginate; pubescent beneath; upper surface variable, from glabrous to pilose; petiole pubescent, 2– 16 mm long.

Phenology:

Number of collections seen: 65

months	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
# flowering specimens	3	2	2	2	6	2	2		2	6	7	5
# fruiting specimens		1	1					1			1	6

References:

Garcia, M.A., S. Demissew, M. Thulin. 2006. Convovulaceae. In: Thulin, M. (ed.), Flora of Somalia, vol. 3, pp. 227–228.Kew Publishing, Richmond.

Verdcourt, B. 1963. Convolvulaceae. In: Hubbard, C.E. and E. Milne-Redhead (eds.), Flora of Tropical East Africa, pp. 144–145. Crown Agent for Overseas governments and administrations, London.

References:

Garcia, M.A., S. Demissew, M. Thulin. 2006. Convovulaceae. In: Thulin, M. (ed.), Flora of Somalia, vol. 3, pp. 227–228.Kew Publishing, Richmond.

Verdcourt, B. 1963. Convolvulaceae. In: Hubbard, C.E. and E. Milne-Redhead (eds.), Flora of Tropical East Africa, pp.144–145. Crown Agent for Overseas governments and administrations, London.

Verdcourt, B. 1978. Corrections and Additions to the 'Flora of Tropical East Africa: Convolvulaceae': IV. Kew Bulletin 33(1): 159–168.

Seeds:

Ovoid, c. 6 x 3–5 mm, densely covered with 5–10 mm long yellowish hairs.

Ipomoea cicatricosa

Acknowledgements:

This species page was produced as part of the project ‘Expanding the scope of African Digital Plant Resources’ funded by the World Collections Programme.

Author:

Javier A. Luna

Contributors:

Distribution Map:

Common names and uses:

Somalia: Domer Comis, Urbi or Hara' Wallis. Kenya: Ekuyenit, Eller, Mukifarrka or Waharawalis.

Author:

Javier A. Luna

Distribution:

Kenya, Ethiopia, Somalia.

Ecology:

Acacia-Commiphora woodland, Acacia wooded grassland, on sandy and gravely soil, rocky limestone, or on semi-desert plains; 100–1800m.

Editor:

Javier A Luna, Mark A. Carine, Sebsebe Demissew.

Flowers:

Sepals linear-lanceolate or triangular, 6–10 x 1–2 mm, silvery pubescent. Corolla mauve or pale violet with darker centre, remaining violet when dry, 2.5–5.5 cm long, infundibular, midpetaline bands pilose to velutinous.

Fruits:

Capsule ovoid to subglobose, c. 7–11 x 17mm, glabrouse or rarely appressed pubscent.

Habit:

Erect shrub, small tree or shrublet up to 3 m tall; stems covered by prominent leaf scars, young stems densely silvery pubescent, old stems glabrescent.

Inflorescences:

Solitary flowers, or a few together on short shoots; subsessile or sessile; bracts linear-laceolate, 3–9 mm long.

Accepted name/Authority/Place of publication:

Ipomoea cicatricosa Baker, in Bull. Misc. Inform. Kew (1895) 221. Type: Somali Republic (N), Golis Range, Cole s.n. (K lectotype).

Leaves:

Lamina elliptic-ovate to suborbicular, 0.7–6.5 x 0.7–4.5 cm; base rounded; apex obtuse or slightly emarginated; ± sparsely pubescent or glabrous above; densely silvery adpressed pubescent beneath; petiole 4–20 mm long, silvery-hairy, with linear glandular depression at the apex.

Phenology:

Number of collections seen: 95

months	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
# flowering specimens	8	5	1	4	8	6	3	2	7	6	10	7
# fruiting specimens	3	3		1							1	2

References:

Garcia, M.A., S. Demissew, M. Thulin. 2006. Convovulaceae. In: Thulin, M. (ed.), Flora of Somalia, vol. 3, pp. 227–228. Kew Publishing, Richmond.

Verdcourt, B. 1963. Convolvulaceae. In: Hubbard, C.E. and E. Milne-Redhead (eds.), Flora of Tropical East Africa, pp. 144–145. Crown Agent for Overseas governments and administrations, London.

References:

Garcia, M.A., S. Demissew, M. Thulin. 2006. Convovulaceae. In: Thulin, M. (ed.), Flora of Somalia, vol. 3, pp. 227–228. Kew Publishing, Richmond.

Verdcourt, B. 1963. Convolvulaceae. In: Hubbard, C.E. and E. Milne-Redhead (eds.), Flora of Tropical East Africa, pp. 144–145. Crown Agent for Overseasgovernments and administrations, London.

Seeds:

Ovoid, c. 6 x 4 mm, densely covered with yellowish c. 8–10 mm long hairs.

Argyreia confusa

Author:
Staples, G. & P. Traiperm.
Contributors:
Distribution Map:
General comments:

I have taken up the name Agyreia confusa for this species, the only practical course. It belongs to a complex of species with an exceedingly messy nomenclature, which only a careful revision will sort out. The name must be considered provisional until it is possible to locate and examine numerous type specimens that are not presently available.

Author:
Staples, G. & P. Traiperm.
Distribution:

Myanmar (type), Thailand, China.

Ecology:

Open grassy slopes
and under deciduous jungle, open dry dipterocarp forest, and in disturbed dry
forest; altitude: 300–1000 m.

Editor:
George Staples, Esmond Er
Flowers:
Flower sepals ovate to broadly elliptic, 10–12 mm, apex obtuse to acutish, densely appressed strigose outside, persistent and accrescent in fruit; corolla tubular-funnelform, 2.8–4.3 cm long, limb entire or undulate purple (or white?), upper tube and midpetaline bands setose outside, tube base glabrous; stamens included, equal, 26–28 mm, filament bases dilated-triangular, densely hairy; pistil included, 30–35 mm.
Fruits:
Berry globose, c. 10 mm diam., papery, pink.
Habit:
Slender climber; stems to 3 m, sparsely appressed setose.
Inflorescences:
Inflorescences axillary, cymose, 1–5-flowered; peduncle shorter than petiole, 0.8–2 cm long; bracts 2 or 3, oblong, elliptic, or spathulate, 0.7–0.9 cm, obtuse, appressed strigose, persistent; pedicels 0–3 mm.
Accepted name/Authority/Place of publication:

Argyreia confusa (Prain) Raizada, Ind. Forester 93: 754. 1967.

Leaves:
Leaves ovate, 2.5–10 by 1.3–6.5 cm, base cordate, apex acute, both sides sparsely appressed setose to glabrescent; lateral veins 5–9 per side; petiole slender, 2.5–4.5 cm.
Phenology:

Flowering: June, August–November; fruiting: December.

References:

Staples, G. & P. Traiperm. 2010. Argyreia in Convolvulaceae. Fl. Thailand 10(3): 337–371.

References:

Staples, G. & P. Traiperm. 2010. Argyreia in Convolvulaceae. Fl. Thailand 10(3): 337–371.

Seeds:
Seeds 4 or fewer.
Synonyms:

Lettsomia confusa Prain, J. Asiat. Soc. Bengal, Pt. 2, Nat. Hist. 63(2): 96. 1894.

Misapplied name: Argyreia setosa sensu authors not of Choisy: e.g., Gagnep. & Courchet in Lecomte, Fl. Indo-Chine 4: 282. 1915, p.p.

Fri, 2011-09-23 09:38 -- Esmond

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