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(Last Modified On 5/30/2013)
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(Last Modified On 5/30/2013)
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Species
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Gonolobus albomarginatus (Pittier) Woodson
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PlaceOfPublication
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Ann. Missouri Bot. Gard. 28: 242. 1941.
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Synonym
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Exolobus albomarginatus Pittier, Contr. U. S. Natl. Herb. 13: 108, fig. 16. 1910. TYPE: Costa Rica, Limon Prov., Pittier (US 573016, not seen).
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Description
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Herbaceous or subligneous vines; stems slender, sparsely to densely pubescent, the hairs stiff, spreading. Leaves ovate to oblong-ovate, apically acuminate, deeply cordate at the base, short strigose to glabrate on both sides, 6-16 cm long and 3-8 cm wide; petioles glabrate to short pubescent, 3-6 cm long. Inflores- cences umbelliform racemose, fewer than 10-flowered, puberulent throughout; peduncles 1-2 cm long; pedicels 2.5-4 cm long. Flowers with the calyx divided to the base, the lobes lanceolate to linear-lanceolate, pubescent outside, glabrous within, 8-15 mm long and 2-4 mm wide; corolla green with darker reticulations inside, rotate, 2.5-4 cm in diameter, the lobes lanceolate, acute, 15-25 mm long and 3-5 mm wide, puberulent outside, glabrous inside except for a band of dense white papillae along one margin, the faucal annulus a prominent ridge of corolline tissue nearly 1 mm high, ciliate throughout or in tufts opposite the corolla si- nuses; corona carnose, obscurely 5-lobed, the margins crenulate; the anther ap- pendages subquadrate, remotely emarginate or occasionally tridentate, 1-2 mm long and 1-2 mm wide at the base; stigma head sharply pentagonal. Follicles unknown.
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Habit
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vines
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Distribution
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Known only from Costa Rica, Panama, and western Colombia,
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Note
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G. albomar- ginatus is closely related to and possibly conspecific with G. uniflorus H.B.K. and G. leianthus (Donn. Sm.) Woodson from Mexico and Guatemala.
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Specimen
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BOCAS DEL TORO: Changuinola Valley, Dunlap 353 (F, US). Chiriquicito to 5 mi. S along Rio Guarumo, Lewvis et al. 2079 (F, MO). Water Valley, Chiriqui Lagoon, Wedel 1631, 1704, 1752 (all MO, US). CANAL ZONE: Around Gamboa, Pittier 4810 (US). COCLE: El Valle de Anton, Allen 3701 (MO). El Valle de Anton, trails near Finca Tomas Arias, Allen 4225 (MO). Road ca. 8 mi. N of El Valle de Anton, Luteyn & Kennedy 1700 (DUKE, MO).
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