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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 panamensis Spellman & Dwyer
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PlaceOfPublication
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Ann. Missouri Bot. Gard. 60: 568, fig. 1. 1973.
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Note
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TYPE: Panama, Dwyer 8300 (MO).
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Description
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Vines; stems terete, densely pubescent, the pubescence of 2 types, the short, sometimes bulbous hairs overtopped by stiff, brown, spreading, multicellular ones 3-5 mm long. Leaves elliptic, basally obtuse, truncate, or shallowly cordate, discolorous, pubescent on both surfaces, 10-15 cm long and 7-10 cm wide; pet- ioles 3-6 cm long. Inflorescences umbelliform, pubescent as on the stems, ca. 10-flowered, but only 2 usually open at a time; peduncles ca. 2 cm long; pedicels ca. 1.5 cm long. Flowers greenish or purplish brown; calyx lobes lanceolate, densely brown pubescent outside, glabrous inside, 5-6 mm long and 2-3 mm wide; corolla rotate to shallowly campanulate, 2-3 cm in diameter, the lobes broadly ovate, 6-9 mm long and wide, with inconspicuous short pubescence inside and outside as on the stems, but with the long hairs mostly in a thin band at the base of the lobes, a faucal annulus present as a low thin ridge of tissue, ca. 0.1 mm high, densely but minutely white pubescent; corona carnose, 5-lobed, the lobes connected by a narrow annular band of tissue, the apically thickened part of the lobe broadly reniform, ca. 1 mm long and 1.5 mm wide; gynostegium ca. 2 mm high; stigma head broadly pentagonal, slightly depressed, covered by a prominent thick white membrane. Follicles subovoid, ca. 20 cm long, 9 cm in diameter, the exocarp woody with a low, short dorsal ridge.
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Habit
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Vines
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Distribution
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Known only from Panama
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Native
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Panama
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Note
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this species represents the most northward ex- tension of a small group of taxa which would formerly have been placed in the genus Phaeostemma. Other members of this group are known from Colombia, Peru, Ecuador, and Bolivia.
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Specimen
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COCLE: Cerro Pilon, Dwyer 8300 (MO). PANAMA: 0.5 mi. beyond the cattle shute, Cerro Jefe, Gentry 4884 (MO).
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Tag
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Project Name
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