Species Descriptions

Jacquemontia staplesii Buril

Conservation Status:
Endemic to Brazil in the Espinhaço Range, in the Chapada Diamantina of Bahia in Brazil (Map 1), occurring in caatinga vegetation. Since there are no data on abundance, this species should be considered as data deficient (DD) according to the IUCN (2001) criteria.
Author:
M.T. Buril
Flowers:
Sepals unequal, membranaceous, pubescent, entire, the 2 outer 8–10 × 1–2 mm, linear to lanceolate, the base truncate to rounded, the apex caudate, slightly sinuate, the 3 inner 6 × 1.5 mm, lanceolate, the base rounded, the apex acuminate; corolla 1.2–1.5 cm long, funnelform, pale blue, weakly lobed, midpetaline bands glabrescent; stamens heterandrous, 2 longer ca. 1 cm long, 3 shorter ca. 7 mm long, anthers sagittate, ca. 1 mm long, oblong, the base cordate; nectary present, ovary ca. 1 mm long, oblong, glabrous, 2-locular, 2 ovules per locule, style ca. 8 mm long, stigmatic lobes 0.5–1 mm long, ovoid flattened.
Habit:
Perennial shrub, ca. 40 cm high, erect, branched, lanate; trichomes T-shape, and 3–4-armed with the arms equal or unequal; internodes 4–8 mm long, leaves imbricate, densely imbricate at the apex of branches, hiding the inflorescences.
Inflorescences:
Inflorescences umbelliform cymes, up to 17-flowered, sessile, usually terminal; bracteoles 0.5–1.5 × 0.1–0.3 cm, elliptic, margins sinuate, two per pedicel; pedicels ca. 2 mm long.
IUCN Conservation ranking:
DD: Data deficient
Accepted name/Authority/Place of publication:

Jacquemontia staplesii Buril

Type:—BRAZIL. Bahia: Lençóis, about 7–10 km, along the main Seabra-Itaberaba road, 41º26’S 12º28’S, 27 May 1980, R. M. Harley 22710 (fl.) (holotype SP!, isotypes SPF!, K!, NY!).

Leaves:
Leaf blades 1.7–2.4 × 1.2–1.5 cm, chartaceous, entire, margins slightly revolute, ovate to orbicular, the base rounded to slightly cordate, the apex rounded to acute with a mucron, lanate, discolorous, veins usually apparent on both surfaces; petiole 1–2 mm long.

Thu, 2012-12-27 13:30 -- George Staples
Jacquemontia grisea Buril

Conservation Status:
Endemic to Brazil, this species is known only from the Espinhaço Range, in the state of Bahia (Map 1), and occurs in campos rupestres and cerrado vegetation. Due to insufficient data about population size, Jacquemontia grisea should be considered as Data Deficient (DD) according to the IUCN (2001) criteria.
Author:
M. T. Buril
Flowers:
Sepals unequal, membranaceous, entire, the 2 outer 7–8 × 2.5–3 mm, oblanceolate, the base cuneate, the apex acuminate, villous, middle one ca. 7 x 2 mm, asymmetric, the 2 inner ca. 6 × 1.5 mm, lanceolate, the base truncate, the apex acute, pubescent mostly on the middle region; corolla 1.2–1.5 cm long, funnelform, blue, weakly lobed, midpetaline bands pubescent; stamens heterandrous, 2 longer ca. 1 cm long, 3 shorter ca. 7 mm long, filaments with short trichomes at the base, anthers elliptic, ca. 1.5 mm long, base subcordate, apex rounded, anthers oblong, ca. 1 mm long, white; nectary present, ovary ca. 1 mm long, oblong, glabrous, 2-locular, 2 ovules per locule, style ca. 1 cm long, stigmatic lobes 0.5 mm long, ovoid flattened.
Fruits:
Not known
Habit:
Perennial shrubs, ca. 50 cm height, erect, few branched, the branches articulated, villous, hoary; trichomes T-shaped, one of the arms ca. 3mm long; internodes 1–5 mm long, leaves densely imbricate on the apex of the branches.
Inflorescences:
Inflorescences capitulliform cymes, up to 5-flowered, sessile, globose, terminal; bracteoles ca. 7 mm long, falcate to linear, densely villose; pedicels ca. 1 mm long.
IUCN Conservation ranking:
DD: Data deficient
Accepted name/Authority/Place of publication:

Jacquemontia grisea Buril

Type:—BRAZIL. Bahia: Barra da Estiva, Road on direction to Fazenda Brejões, 13º34’41’’S 41º23’41’’W, 1236 m alt., 3 July 2004, E.R. de Souza & M.N.S. Stapf 473 (fl.) (holotype HUEFS, isotype SP).

Leaves:
Leaf blades 1–2.4 × 0.5–1 cm, chartaceous, entire, elliptic, ovate or obovate, the base rounded to cuneate, the apex acute to slightly acuminate, densely vilose, silver grayish sometimes tending to bluish, veins obscured by indumentum; sessile.

Thu, 2012-12-27 13:26 -- George Staples
Jacquemontia macrocalyx Buril

Conservation Status:
This species is assessed here as Endangered, according to the IUCN (2001) Red List criteria. This is assessed as B1, with an area of occupancy estimated to be less than 5000 km², and the population size is estimated to number fewer than 250 mature individuals, as known to occur in only two locations. The new species is known from only two localities in Bahia, Brazil.
Author:
M. T. Buril
Flowers:
Sepals membranaceous, entire, unequal, the outer two, 1.2–1.8 × 0.8–1.5 cm, ovate to deltoid, rarely lanceolate, base cordate, apex acuminate to acute, pubescent, intermediate one, 1–1.4 × 0.3–0.4 cm, asymmetric, inner-2, 0.3–0.5 × 0.2–0.25 cm, entire, ovate to lanceolate, base rounded, apex acuminate, pubescent; corolla 1.4–1.5 cm long, funnelform, apex of midpetaline line ciliate, lilac with the tube light pink; stamens ca. 8 mm, filaments pilose on the base, anthers ovoid, white; nectary absent; ovary ca. 0.5 mm, oblong, glabrous, 2-locular, 2 ovules per locule; style 0.5–1 cm, stigmatic lobes ca. 0.5 mm, ovate to flattened, white.
Fruits:
Capsule 5 x 4 mm, 8-valvate, oblong, subtended by persistent bracts
Habit:
Shrub 0.4–1.5 m tall, woody at base, velutinous, stellate trichomes of two sizes, 4–5-rayed, the shorter ca. 0.3 mm more dense, the longer ca. 0.6 mm sparsely distributed; latex absent; stem internodes 1.7–3.2 cm long.
Inflorescences:
Inflorescences as monochasial or dichasial cymes, 2 or 3-flowered; peduncles 0.5–4.5 cm, axiallary, when terminal very short, velutinous; bracts 2, ca. 5 mm, linear, velutinous;
IUCN Conservation ranking:
EN: Endangered
Accepted name/Authority/Place of publication:

Jacquemontia macrocalyx Buril

TYPE: Brazil. Bahia: Parque Est. Morro do Chapéu, Lagedo Bordado, 11º16'20" S, 41º05'05" W, 736m., 6 Feb.2011, B. S. Amorim, K. Mendes, D. Moura 752(holotype, UFP; isotypes, SP, MO).

Leaves:
Leaf blades 2.5 – 3.6 × 1.7 – 2.2 cm, papyraceous, entire, ovate to broadly elliptic, base rounded to subcordate, apex apiculate to acuminate, green to grayish, yellowish when dried, velutinous, corrugated, but apparent only in fresh material; venation camptodromous, with 5 pairs of secondary veins; petiole 4–6 mm.
Seeds:
Seeds 1 or 2, ca. 3–3.5 mm, trigonal, glabrous, with the lateral ridge lacking.

Thu, 2012-12-27 13:19 -- George Staples
Jacquemontia chrysanthera Buril

Conservation Status:
Jacquemontia chrysanthera occurs in the caatinga, a shrubby savanna habitat of the semi-arid region in Northeastern Brazil. This species is known only from Bahia and Pernambuco and should be classified as Vulnerable, according to IUCN Red List criteria (2001), because it occupies an area estimated at less than 2000 km ², and although it occurs in the Chapada Diamantina National Park, this is still a not totally protected area.
Author:
M. T. Buril
Flowers:
Sepals unequal, the 2 outer 1.0–1.1×0.4–0.45 cm, chartaceous, thick, entire, oblong, the base truncate, the apex acuminate, velutinous, the 3 inner 0.7–0.8× 0.3–0.35 cm, entire, ovate, the base rounded, the apices acuminate, puberulent in the middle region, persistent. Corolla ca. 2 cm long, funnelform, without lobes between episepalic nervures, the apex of episepalic nervure ciliate, blue. Stamens heterandrous, the longer 2 ca. 0.7 cm long, the smaller 3, ca. 0.6 cm long; filaments with short unicellular trichomes at the base; anthers elliptic, ca. 2 mm long, the base subcordate, the apex rounded, bright yellow. Style ca. 1 cm long, exceeding the stamens, each stigmatic lobe ca. 1×0.6 mm, oval, flattened, white; nectary 5-lobate; ovary ca. 1 mm long, globose, glabrous, 2-locular, with 2 ovules per locule.
Fruits:
Fruit a capsule, ca. 5×4 mm, globose, opening by 8 valves.
Habit:
Perennial vine, climbing, with slender stems, somewhat woody at base, much branched, velutinous; trichomes stipitatestellate, 5(−7)-rayed, the rays usually equal; latex white. Internodes 5.7–10.3 cm long.
Inflorescences:
Inflorescences compound dichasial cymes, umbelliform, usually ca. 30- flowered, rarely 7-12-flowered; peduncles 3.5–5.2 cm long, axillary, velutinous; bracts 5–8×1 mm, entire, linear, two at the base of each cyme, pilose.
IUCN Conservation ranking:
VU: Vulnerable
Accepted name/Authority/Place of publication:

Jacquemontia chrysanthera Buril

Type: Brazil. Bahia: Mun. Caetité, near Brejinho das Ametistas, caatinga, 14°11′60″S 41°39′36″W, 13 Feb 2009, M. T.Buril, B. Amorim, A. Benko, G. Cruz, D.Pinangé, J. Gitai, M. I. Martins & K. Veiga224 (holotype: UFP; isotypes: NY, SP).

Leaves:
Leaf blades 5.7–8.6×3.4–6.2 cm, papyraceous, entire to slightly sinuate, ovate, the base subcordate, the apex acuminate to apiculate, velutinous, hoary, yellowish when dried, the trichomes on the abaxial side longer than on the adaxial side, with 9 pairs of secondary veins. Petiole 0.8–2.3 cm long, pubescent.
Pollen:
Tricolpate.
References:

Buril, M.T. & Alves, M. 2011. A new species of Jacquemontia (Convolvulaceae) from northeastern Brazil. Brittonia, 63 (4): 436–441.

Seeds:
Seeds 3–3.2 mm long, the dorsal face rounded, the margins with a thin, striate lateral ridge, ca. 0.2–0.4 mm wide, the surface minutely areolate.

Thu, 2012-12-27 13:06 -- George Staples
Jacquemontia robertsoniana Buril & Sim.-Bianch.

Author:
M. T. Buril
Flowers:
Sepals unequal, 3 outer 0.7 – 0.75 × 0.2 – 0.25 cm, chartaceous, entire, lanceolate to ovate, base rounded, apex long acuminate, 2 lanulose inner 0.55 – 0.6 × 0.1 – 0.15 cm, entire, lanceolate, base rounded, apex acute, puberulent in the central region, with margins membranous. Corolla c. 1.2 cm long, funnelform, weakly lobed between episepalic veins, with sparse trichomes on midpetaline band on abaxial face, blue. Stamens heterandrous, 2 longer c. 0.6 cm long, 3 smaller c. 0.4 cm long, filament glabrous, anthers elliptic, c. 1.5 mm long, base subcordate, apex rounded. Style c. 0.5 cm long, stigmatic lobes elliptic, oval-flat; nectary absent; ovary c. 1 mm long, glabrous, 2-locular, 2 ovules per locule.
Fruits:
Not known
Habit:
Shrub, erect, few branched, stems tomentose, greyish to ochraceous; tomentum formed by stellate trichomes, 3-rayed, the rays usually equal, c. 0.1 mm, pedunculate. Internodes 0.2 – 0.6 cm long, sometimes shorter.
Inflorescences:
Inflorescence terminal, compound cymes, capituliform, c. 6-flowered, sessile, terminal; modified bracteoles lacking.
Accepted name/Authority/Place of publication:

Jacquemontia robertsoniana Buril & Sim.-Bianch.

Typus: Brazil, Bahia,Mucugê, Serra do Esbarrancado, 12°43'S 43°30'W,17 April 2005, Conceição & Cardoso 1293 (holotypus HUEFS!).

Leaves:
Leaf blade 1 – 1.6 × 0.9 – 1.3 cm, papery, entire, oval to orbicular or rarely elliptic, oblong, ovate or obovate, base rounded, apex apiculate to acuminate and on the leaves of the terminal branches becoming longer, caudate to obtuse with an acumen, tomentose, greyish; veins not evident. Petiole 0.05 – 0.1 cm long.
Pollen:
Not known
References:

Buril, M.T.; Simão-Bianchini, R. & Alves, M. Jacquemontia robertsoniana (Convolvulaceae), a new shrub species from Brazil. Kew Bulletin 67: 1-5.

Seeds:
Not known

Thu, 2012-12-27 12:48 -- George Staples
Ipomoea horsfalliae

Contributors:
General comments:

Ipomoea horsfalliae was described from plants cultivated in England and the precise wild origin is unknown, though it has been widely supposed to be somewhere in the West Indies, perhaps Jamaica. This species is cultivated world-wide in the tropics as a flowering climber. There is speculation that cultivated plants may be hybrids differing genetically from the wild populations. Certainly cultivated plants rarely produce capsules or seeds.

Common names and uses:
Red Stephanotis (English, Indonesia); rode Clematis, rode Stephanotis (Dutch, Indonesia). Prince's vine, Kuhio vine (Hawaii, USA).
Cultivation:
A beautiful tropical climber with spectacular masses of red-purple flowers and glossy dark green foliage. Kuhio vine thrives in full sunshine and requires adequate moisture to thrive.
Author:
S.J. van Ooststroom
Distribution:

Presumed to be a native of the West Indian Islands, cultivated throughoutthe tropics in gardens for ornamental purposes.

Editor:
G. Staples
Flowers:
Sepals subequal or the outer ones slightly shorter, elliptic or ovate-elliptic, obtuse, concave, 7-10 mm long, green at the base, for the rest red-purple or purplish black. Corolla red or red-purple, salver-shaped, the tube slightly angular, somewhat narrowed to the base, ca 4 cm long, ca 1 cm diam.; limb ca 4--4½ cm diam., 5-lobed with rounded lobes. Stamens and style exserted; filaments pale purple, densely villous at the base; style white, stigma dark purple, ovary glabrous.
Fruits:
Capsules rarely formed.
Germination and Propagation:
Cultivated plants rarely produce capsules with viable seeds, so propagation is typically from stem cuttings. Cuttings root with some effort and once established growth is rapid.
Habit:
A large, glabrous twiner. Stems terete, the adult parts woody, lenticellate.
Author:
G. Staples
References:

Austin, D.F. 2005. Convolvulaceae in Staples, G. & D. Herbst. 2005. A tropical garden flora. Bishop Museum Press.

Inflorescences:
Inflorescences axillary, 8-30 cm long, few- to several-flowered; peduncle 1½- 14 cm, widely cymosely branched. Pedicels as long as or longer than the sepals, 8- 15 mm.
Accepted name/Authority/Place of publication:

Ipomoea horsfalliaeHook., Bot. Mag. (1834) plate 3315.

Landscape Uses:
It can be grown on a fence or trellis, allowed to clamber onto a house roof or grow up into a tree, among other uses. In Hawaii, Kuhio vine has been used very effectively as a colorful screening plant for fences in the central median of highways, where it grows without much care and provides a beautiful backdrop.
Leaves:
Leaves orbicular in outline, 5- 20 by 5-20 cm, deeply palmately lobed to beyond the middle or to the base into 3-5 segments; middle segment mostly much larger than the lateral ones, ovate, elliptic or elliptic-oblong, mostly attenuate towards both ends, acuminate at the apex with acute or obtusish, mucronulate point; lateral segments ovate-lanceolate to linear-lanceolate; margins of segments slightly crisped, entire or coarsely dentate to crenate; petiole shorter than the blade, 2½- 13 cm.
Pests and Diseases:
In Malesia, caterpillars of Euchromia horsfieldi Moore feed on the leaves of this species. In severe cases the infestation can defoliate the entire plant.
References:

Ooststroom, S.J. van & R.D.Hoogland. 1953. Convolvulaceae in FloraMalesiana 4: 484.

Tue, 2012-07-03 03:55 -- George Staples
Ipomoea asterophora var. subglabra

Author:
S.J. van Ooststroom
Contributors:
Distribution:

West New Guinea, SW. Celebes.

Ecology:

River banks, up to 100 m elev.

Editor:
G. Staples
Habit:
Differs from var. asterophora by the much less dense to almost lacking indument; the stems may be stellately hairy over the whole surface but specimens with nearly glabrous stems are also found such almost glabrous stems still bear a few stellate hairs at the nodes.
Accepted name/Authority/Place of publication:

Ipomoea asterophora var. subglabra Ooststr., Blumea 3 (1940) 563.

Leaves:
Leaves with stellate hairs below on the nerves only, or entirely glabrous; petioles stellately hairy to glabrous.
References:

Ooststroom, S.J. van & R.D.Hoogland. 1953. Convolvulaceae in FloraMalesiana 4: 484.

Tue, 2012-07-03 03:31 -- George Staples
Ipomoea asterophora var. asterophora

Contributors:
General comments:

Rather few species of Ipomoea are stellate-hairy; in Asia/Malesia this is the only one. In South America I. bonariensis is the outstanding example. In Africa ca 12 stellate hairy species are assigned to a distinct genus, Astripomoea.

Author:
S.J. van Ooststroom
Distribution:

Kangean Islands, Moluccas (Ceram), New Guinea.

Ecology:

River-banks, up to 100 m.

Editor:
G. Staples
Flowers:
Sepals slightly unequal, outer ones elliptic, 7-9 mm long, inner ones orbicular, 9- 10 mm long, all concave with rounded apex, subcorikeous, glabrous or the outer ones sparsely hairy with stellate hairs. Corolla pale purplish or purplish white, darker purple inside towards the base, campanulate to funnel-shaped, ca 7 cm long, glabrous. Stamens and style included; filaments hairy at the base. Ovary glabrous.
Habit:
Stems twining, terete, stellately hairy mainly at the nodes, glabrescent.
Inflorescences:
Inflorescences axilla ry; peduncles terete or slightly angular, ca 6-l 5 cm long, 2-6- or sometimes more-flowered , stellately hairy to glabrous. Pedicels slender, longer than the calyx, 1- 2 cm. Bracts minute, caducous.
Infraspecific Characters:

KEY TO THE VARIETIES

1. Leavesdensely covered with stellate hairs on both surfaces; stems with similar hairsmainly at the nodes

var. asterophora

1. Leaves with stellate hairsbelow on the nerves only, or entirely glabrous; stems with similar hairs overthe whole surface or only at the nodes. var.subglabra

Accepted name/Authority/Place of publication:

Ipomoea asterophoraOoststr., Blumea 3 (1940) 561.

Leaves:
Leaves broadly ovate to orbicular, 7- 16 by 7½- 12 cm, broadly cordate at the base, attenuate to shortly acuminate at the apex with a broadly triangular, obtuse to slightly emarginate, mucronulate acumen; margins entire, slightly undulate or more or less deeply lobed with 1-2 broad or narrow triangular obtuse lobes on either side, stellately hairy on both surfaces; lateral nerves strongly curved , 3-4 on either side of the midrib, 2-3 of which rising from the leaf base; petiole with stellate hairs, glabrescent, 3-8 cm long.
References:

Ooststroom, S.J. van & R.D.Hoogland. 1953. Convolvulaceae in FloraMalesiana 4: 484.

Tue, 2012-07-03 03:03 -- George Staples
Ipomoea graminea

Contributors:
Author:
S.J. van Ooststroom
Distribution:

North Australia, SE. New Guinea, and SW.Celebes.

Ecology:

In open savannah-land and in
savannah-forests, climbing up grasses etc., ca 15–150 m elev.

Editor:
G. Staples
Flowers:
Nocturnal; sepals unequal, the inner ones longer; outer sepal elliptic, ca 6 mm long, inner ones oblong or ovate-oblong, 7 and 8-10 mm long, somewhat longer in fruit, all obtuse, and mucronulate at the apex. Corolla salver-shaped, white, ca 4 cm (up to 7.5 cm ?) long. Filaments inserted near the corolla-base (perhaps slightly exserted), hairy at their base. Ovary glabrous.
Fruits:
Capsule ovoid-globular, ca 8 mm high, glabrous.
Habit:
A glabrous twiner. Stems slender.
Inflorescences:
Peduncles 1-flowered, 3-5 mm, in fruit up to 12-15 mm. Pedicels 6-9 mm, in fruit up to 15-18 mm.
Accepted name/Authority/Place of publication:

Ipomoea graminea R.Br., Prod. (1810)485.

Leaves:
Leaves linear, 4-14 cm long or still longer, 2-5 mm broad, obtuse, mucronulate; petiole 4-10 mm; midrib and lateral nerves nearly parallel.
Phenology:

Flowers openingin the evening.

References:

Ooststroom, S.J. van & R.D.Hoogland. 1953. Convolvulaceae in FloraMalesiana 4: 479.

Seeds:
Seeds greyish.

Tue, 2012-07-03 02:49 -- George Staples
Ipomoea diversifolia

Contributors:
Author:
S.J. van Ooststroom
Distribution:

India to NE. Australia, Philippines (Luzon island, IlocosNorte province).

Ecology:

In grasslands at low altitudes.

Editor:
G. Staples
Flowers:
Sepals subequal or the inner ones slightly longer, 6- 10 mm long, elliptic or narrow-elliptic or oblong-lanceolate, cuspidate or acute, the back more or less carinate and muricated. Corolla tubular to funnel-shaped, small, 5-6 mm long, white, purple inside at the tube. Stamens and style included.
Fruits:
Capsule subglobose, 8-10 mm diam., glabrous.
Habit:
A glabrous annual. Stems slender, trailing or twining.
Inflorescences:
Inflorescences axillary; peduncles mostly shorter than the leaves, 7-20 mm long, angular or flattened, mostly 1-, sometimes to 3-flowered. Pedicels 8-12(- 18), in fruit to 15(-20) mm, erect, also in fruit. Bracts linear-lanceolate, small, ca 3 mm long, very acute.
Accepted name/Authority/Place of publication:

Ipomoea diversifolia R.Br., Prod. (1810) 487.

Leaves:
Leaves orbicular in outline, 1-2½(-5) cm diam., digitate, with 5 coarsely and irregularly dentate to pinnatifid segments, the two basal of which sometimes bifid, the central segment larger than the lateral ones, all narrow-oblong to oblanceolate in outline; petiole mostly shorter than the blade, 3-12(- 15) mm long, with pseudo-stipules.
References:

Ooststroom, S.J. van & R.D.Hoogland. 1953. Convolvulaceae in FloraMalesiana 4: 479.

Seeds:
Seeds short-tomentose.
Synonyms:

Pharbitis laciniata Dalz. in Hook., KewJ. Bot. 3 (1851) 178.

Ipomoea laciniata (Dalz.) C.B. Clarkein Hook.f., Fl. Br. Ind.4(1883) 200.

Tue, 2012-07-03 02:41 -- George Staples

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