(Last Modified On 4/8/2013)
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(Last Modified On 4/8/2013)
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Species
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Stemmadenia alfari (Donn. Sm.) Woodson
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PlaceOfPublication
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Ann. Missouri Bot. Gard. 15: 360. 1928.
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Synonym
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Tabernaemontana alfari Donn. Sm., Bot. Gaz. (Crawfordsville) 24: 396. 1897.
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Description
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Small trees, to 4 m, the stems glabrous. Leaves elliptic, acuminate, obtuse basally, to 12 cm long and 5 cm wide, glabrous, membranaceous; petioles 3-5 mm long, weakly perfoliate, glandular in the axils. Inflorescences racemose, pseudo-axillary (?), few-flowered, the peduncle ca. 2-4 mm long. Flowers with the pedicels ca. 1-4 mm long; bracteole 1, deltoid, ca. 1.5 mm long; calyx-lobes subequal, ovate, ca. 3-4 mm long, glabrous, each bearing 4-6 oppositely placed squamellae within; corolla subinfundibuliform, orange to yellow, the tube proper ca. 10 mm long, the throat narrowly conic, ca. 15 mm long, the lobes obliquely obovate, ca. 9-12 mm long, spreading; stamens attached at the top of the corolla tube, the anthers ca. 4-4.2 mm long; nectaries concrescent and adnate to the ovary, the stigma capitate above and umbraculiform below. Follicles slender, curved, acuminate, ca. 3-5 cm long and 1-1.3 cm broad; seeds unknown.
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Habit
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Small trees
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Distribution
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Costa Rica and Panama.
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Specimen
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COCLE: N rim of El Valle de Anton, Allen 1783 (F, MO, US). El Valle site area of WEPCOR, Kirkbride 1044 (MO).
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Note
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Stemmadenia alfari is easily separated from the remaining Panamanian mem- bers of this genus by its small calyx lobes.
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