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(Last Modified On 4/10/2013)
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(Last Modified On 4/10/2013)
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Species
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Prestonia allenii Woodson
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PlaceOfPublication
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Ann. Missouri Bot. Gard. 27: 332. 1940.
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Description
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Lianas, the stems pubescent, the hairs pale-brown. Leaves obovate, acumin- ate, shallowly cordate basally, to 20 cm long and 10 cm wide, pubescent on both surfaces, densely so beneath, membranaceous; petioles ca. 5-10 mm long, glandu- lar in the axils. Inflorescences umbellate, axillary, densely-flowered. Flowers with the pedicels to ca. 1 cm long; calyx-lobes oblong deltoid, ca. 20-25 mm long, pubescent, bearing 1 lacerate pubescent squamella within; corolla subinfundibuli- form, green and white, pubescent externally, without epistaminal appendages, the annulus 5-lobed, the tube and slightly expanded throat ca. 35 mm long, the lobes obliquely obovate, ca. 15 mm long; stamens included, the anthers ca. 6-7 mm long, glabrous; nectaries concrescent, the margins thin, surpassing the ovary at anthesis. Follicles unknown.
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Distribution
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Known only from the type collection.
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Specimen
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COCLE: N rim of El Valle de Anton, Allen & Alston 1855 (MO, holotype).
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Note
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Prestonia allenii is very close to P. wedelii-only the structure of the an- nulus, ridged and unevenly lobed in P. wedelii versus 5-lobed in P. allenii, ade- quately separates the two taxa, and I am not fully convinced that this distinction merits specific status.
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