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(Last Modified On 4/5/2013)
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(Last Modified On 4/5/2013)
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Species
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Maregravia nepenthoides Seemann
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PlaceOfPublication
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Jour. Bot. 8: 245. 1870.-FIG. 8.
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Synonym
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Maregravia tonduzii Gilg, Bot. Jahrb. Syst. 42: 125. 1908.
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Description
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Large woody vine, the branchlets angular, with rows of lenticels, often flexu- ous. Leaves large, the petioles 3-9 mm long, canaliculate above; blade oblong, 2.5-3.5 times as long as wide, 10-20(-25) cm long and 3-6(-7.5) cm wide, acuminate apically, the acumen 1-1.5 cm long, obtuse to rounded or sometimes subacute basally, coriaceous or subcoriaceous, rarely chartaceous, the midrib sul- cate above, prominent beneath, the major lateral veins in ca. 10 pairs, alternat- ing with minor ones, forming a marginal vein, prominent on both sides of the blade, the veinlets prominent at least beneath; hypophyllous glands small, mostly inconspicuous and hardly visible with the unaided eye, in a row of 6-15, 1-8 mm from the margin, minute dark glands in the margin. Inflorescences umbelli- form, with 20-35 or possibly more fertile flowers and 5-6 nectaries, the rachis globose, 6-9 mm in diameter; nectaries large, dipper-shaped, 5-7.5 cm long, the stalk 3-4 cm long, canaliculate inside, lenticellate outside, the cup 1.5-3.5 cm long and 1-2 cm wide, the opening large. Flowers perpendicular on the
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Habit
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vine
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Description
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pedicels, the pedicels 2-3.5 cm long, to 4.5 cm long in fruit, lenticellate; brac- teoles broadly suborbicular, 2-3.5 mm long and 3-5 mm wide; sepals unequal, suborbicular or semiorbicular, 3-4 mm long and 5-6.5 mm wide; corolla coni- cal, 8-10 mm long and 4-5 mm in diameter basally; stamens ca. 25-30, the filaments linear, flattened, 3-8 mm long, the anthers ca. 2 mm long; ovary subglobose, ca. 3 mm in diameter, with a short style, ca. 10-loculed. Fruit glo- bose, apiculate.
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Distribution
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In tropical rainforests of the Atlantic region of Central America from Brit- ish Honduras to Panama.
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Specimen
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BOCAS DEL TORO: Vicinity of Chiriqui Lagoon, von Wedel 1192 (GH, US); Water Valley, von Wedel 818 (GH, US), 1666 (MO). CANAL ZONE: Barro Colorado Island, Aviles 67 (F); near dock, Shattuck 666 (F); near boat landing, Wetmore -& Abbe 95 (F, GH).
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Note
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It was on this species that Thomas Belt made his remarkable observations about pollination by birds through which the genus Marcgravia became a classic case of ornithogamy. Since then it has become known that only some species of Marcgravia are pollinated by birds and others by bats.
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