Iseia

Accepted name/Authority/Place of publication:

ISEIA O'Donell, Boletín de la Sociedad Argentinade Botánica 5(1–2): 77 (1953)

Tribe:

Aniseieae

Type Species:

Iseia luxurians (Moric.) O'Donell, Boletín de la Sociedad Argentina de Botánica 5(1–2): 77 (1953)

Habit:

Herbaceous perennial, climbing or prostrate, the stems branched, to 3 m or more long, with fibrous, adventitious roots.

Leaves:

Simple, 1.5-12 cm long, 1.5-4 cm wide, entire, elliptic, oblong to lanceolate, the base cuneate to rounded, the apex obtuse to mucronate, with silky appressed pubescence at least along the principal nerves, glabrescent.

Inflorescences:

Cymose or flowers single, solitary, the peduncle 0.5-6 cm long.

Flowers:

1-10, with separate sepals, ± equal, 7-12 mm long, elliptic to suborbicular, obtuse to acute and with a small arista at the apex, generally hirsute, ciliate, the corolla white, funnelform, 3-4 cm long, the limb more or less entire, gradually dilated from the base, reddish-hirsute, the stamens white, included, the anthers erect, the style 1, simple, stigma globose.

Pollen:

3-colpate (Tellería and Daners 2003)

Fruits:

Indehiscent capsules, 9-14 mm long, brown to blackish, 0.9-1.4 cm wide, glabrous, with a spongy mesocarp.

Seeds:

Often 4, these 4-6 mm long, ovoid, brownish to almost black, glabrous or with a ring of short trichomes along the margins.

Chromosome details

Publication(chromosome):

Reported erroneously as 2n = 60 (Lewis et al. 1967. Ann. Mo. Bot. Gard. 54(2): 180), but they later corrected the identification. Iseia apparently has not been counted.

Distribution:

Mexico and Central America to Paraguay and Argentina. map

Countries:

Argentina

Brazil

Colombia

Costa Rica

Ecuador

Honduras

Mexico

Panama

Paraguay

Peru

Tobago

Trinidad

Venezuela

Ecology:

O'Donell (1953) noted that Iseia grows exclusively along waterways; fruits floated for more than two months.

Phylogeny:

It has generally been agreed that Iseia is related to Aniseia. These in turn are allied with Odonellia. Stefanovic et al. (2002) argued that Iseia and Aniseia should be combined, but to do so would ignore the dramatic differences in their morphology.

Number of Species:

References:

Austin, D. F., J.A. McDonald and G. Murguía-Sánchez. Convolvulaceae. In: Davidse, G., M. Sousa Sánchez, S. Knapp & F. Chiang Cabrera. (editores generales) 2011. Rubiaceae a Verbenaceae. Fl. Mesoamer. 4(2): ined.

Forzza, R. C. & et al. 2010. 2010 Lista de espécies Flora do Brasil. http://floradobrasil.jbrj.gov.br/2010/.

Hammel, B. 2010. Convolvulaceae. En: Manual de Plantas de Costa Rica. Vol. 5. B.E.Hammel, M.H. Grayum, C. Herrera & N. Zamora (eds.). Monogr. Syst. Bot. Missouri Bot. Gard. 119: 72–126

Stefanovic, S., L. Krueger & R. G. Olmstead. Monophyly of the Convolvulaceae and circumscription of their major lineages based on DNA sequences of multiple chloroplast loci. American Journal of Botany 89(9): 1510-1522.

Austin, D. F. Pp. 653-679. In: Stevens, W. D., C. U. U., A. Pool & O. M. Montiel. 2001.Flora de Nicaragua. Monogr. Syst. Bot. Missouri Bot. Gard. 85: i–xlii, 1–2666.

Tellería, M. C. and G. Daners. 2003. Pollen types in southern New World Convolvulaceae and their taxonomic significance. Plant Systematics and Evolution 243: 99-118.

Author/Editor

Author:

Austin, D. F.

Publication:

O’Donell, C. A. Un nuevo género de Convolvuláceas: Iseia. Boletín de la Sociedad Argentina de Botánica 5(1–2): 77 (1953)

Contributors:

Convolvulaceae Unlimited

Convolvulaceae

Iseia

Primary tabs

Iseia

Chromosome details

Author/Editor

Iseia countries map

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Convolvulaceae

Iseia

Primary tabs

Chromosome details

Author/Editor