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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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Matelea trianae (Dcne. ex Trin.) Spellman
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Synonym
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Macroscepis trianae Dcne. ex Trin., Compt. Rend. Hebd. Seances Acad. Sci. 74: 882. 1872. TYPE: Colombia, Triana (P, not seen). Macroscepis barbata Blake, Contr. U. S. Natl. Herb. 20: 244. 1919. TYPE: Colombia, Curran 182 (US). Macroscepis panamensis Woodson, Ann. Missouri Bot. Gard. 26: 301. 1939. TYPE: Panama, Woodson et al. 1228 (MO, NY, US). Matelea stellulifera Standl. & L. 0. Wms., Ceiba 1: 245. 1951. TYPE: Costa Rica, Allen 5666 (F).
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Description
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Coarse suffruticose vines, stems, petioles, and inflorescences densely covered with stiff, spreading, brownish hairs. Leaves narrowly to broadly ovate to sub- orbicular, shallowly cordate, densely pilose on both surfaces; petioles 4-7 cm long; blades 12-18 cm long and 5-14 cm wide. Inflorescences umbelliform, few- to several-flowered; peduncles 1-2 cm long; pedicels mostly ca. 1 cm long. Flowers large, somewhat foetid; calyx lobed to the base, the lobes lanceolate to ovate-lanceolate, acute, strigose outside, the margins ciliate, 10-12 mm long and 5-8 mm wide; corolla pale yellowish-green becoming brownish-green, salverform, short pubescent outside, the tube constricted at the mouth, 9-12 mm long, the lobes ovate to suborbicular, hispidulous-papillate inside, especially near the mouth, 9-12 mm long, nearly as wide; corona of 5 distinct fleshy segments, the apices nearly quadrate and equaling the corolla tube or slightly exserted. Fol- licles (described from Colombian material) attenuate-ovoid, inserted obliquely on the fruiting pedicel, ca. 11 cm long, 3 cm in diameter, conspicuously 7-winged, the wings extending the full length of the fruit.
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Distribution
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As here conceived, M. trianae ranges from the northern part of Costa Rica along the Pacific side of the continent into western Colombia and into the Atlantic lowlands of Venezuela.
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Note
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Both this and the following species belong to subgenus Macroscepis, a group in need of critical study. The closely related Matelea urceolata (Karst.) L. 0. Wms., of Colombia and Venezuela, may also occur in Panama. It is distinguished by the long flattened hairs of its corolla lobes and by a 7-winged fruit in which the lateral wings do not extend the full length of the follicle.
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Specimen
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CANAL ZONE: Road C2F, '/2 mi. NW of Summit Naval Radio Station, Croat 11028 (MO). COCLE: Aguadulce, in savannahs near sea level, Pittier 4940 (US). DARIEN: Without locality, Dawe 875 (NY). LOS SANTOS: Headwaters of Rio Pedregal, 25 mi. SW of Tonosli, Lewis et al. 2971 (F, MO). PANAMA': Near Capira, Woodson et al. 1228 (MO, NY, US). Panama Viejo, Duke 5723A (MO). Road toward top of Cerro Campana, Duke 5966 (G, MO). Isla Tobago, Woodson et al. 1432 (F, G, MO, NY). San Jose Island, Area 11 A, Johnston 1056 (G, MO). VERAGUAS: Above Santa Fe on slopes of Cerro Tute, Gentry 6221 (F, MO).
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