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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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Cynanchum recurvum (Rusby) Spellman
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PlaceOfPublication
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Phytologia 25: 438. 1973.
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Synonym
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Tassadia recurva Rusby, New Sp. S. Amer. PI. 97. 1920. TYPE: Colombia, Smith 1621 (MO, NY).
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Description
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Herbaceous vines, young stems pubescent, glabrescent. Leaves thick, dark green above, lighter beneath, the margins revolute at least when dry, lanceolate to elliptic, basally obtuse to rounded, apically rounded, apiculate, sparingly pubescent with short white, closely appressed hairs above, glabrate beneath, mostly 3.5-5.5 cm long and 2.0-2.6 mm wide with a pair of glands at the base; petioles 4-8 mm long, pilose. Inflorescence a panicle of umbels to ca. 15 cm long, umbels 3-5-flowered, inflorescence branches and pedicels pubescent; pedicels slender, 2-4 mm long. Flowers with the calyx equaling or exceeding the corolla tube, the lobes 0.7-0.8 mm long and about as wide, ovate, pubescent outside with 1 or 2 flattened glands on the interior in each sinus; corolla yellow-green, campanulate, the tube ca. 7 mm long and ca. 1.5 mm wide at the throat, the lobes spreading or reflexed, lanceolate-ovate, densely white papillose inside, glabrous outside, 1.2-1.8 mm long and 0.8-0.9 mm wide; corona + fleshy, greenish-white, composed of 5 transversely depressed lobes opposite each stamen and a rounded cupped portion between each lobe, ca. 0.2 mm high; gynostegium truncate- conical, exserted from the corolla, 0.7-0.8 mm high. Follicles unknown.
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Habit
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vines
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Distribution
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This species is known from northern South America with single collections from Panama and Costa Rica.
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Note
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Both this species and the preceding one belong to a small tightly knit com- plex of 6 or 8 species. The group is difficult primarily because of the small flowers. Critical study may reveal that the group merits generic status.
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Specimen
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CANAL ZONE: Barro Colorado Island, 200 m N of Zetek trail above the escarpment, Croat 15000 (MO).
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Tag
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Project Name
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