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(Last Modified On 5/21/2013)
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(Last Modified On 5/21/2013)
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Species
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Arrabidaea pubescens (L.) A. Gentry.
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PlaceOfPublication
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Brittonia 25: 239. 1973.
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Synonym
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Bignonia pubescens L., Sp. P1., ed. 2. 2: 870. 1763. TYPE: Mexico, Campeche, Houstoun s.n. (not seen). Arrabidaea blanchetii DC., Prodr. 9: 186. 1845. TYPE: Brazil, Bahia, Blanchet 2363 (G-DC). This content downloaded from 192.104.39.2 on Tue, 14 May 2013 16:10:35 PMAll use subject to JSTOR Terms and Conditions1973] GENTRY-FLORA OF PANAMA (Family 172. Bignoniaceae) 819 Arrabidaea pleei DC., Prodr. 9: 184. 1845. TYPE: Venezuela, Maracaibo, Plee 89 (G-DC, K, P, US). Arrabidaea sieberi DC., Prodr. 9: 186. 1845. TYPE: Trinidad, Sieber 109 (G-DC, GH). Petastoma pubescens (L.) Miers, Proc. Roy. Hort. Soc. 3: 195. 1863. Arrabidaea carabobensis Pittier, Jour. Washington Acad. Sci. 18: 335. 1928. TYPE: Venezuela, Carabobo, Pittier 7915 (VEN). Arrabidaea lundellii Standl., Publ. Field Mus. Bot., 8: 48. 1930. TYPE: British Honduras, Orange Walk, Lundell 56 (F, holotype; US, isotype).
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Description
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Liana to 2.5 cm in diameter, stem with 4 phloem arms in cross section; branchlets terete, puberulous with interpetiolar glandular fields; pseudostipules inconspicuous or lacking. Leaves 3-foliolate or 2-foliolate with a tendril or tendril scar; leaflets ovate, acute to acuminate, rounded to broadly subcordate at base, 4.5-13 cm long and 2.5-8 cm wide, membranaceous, secondary nerves 4-5 on a side, palmately 3-5-veined from base, densely short-puberulous beneath, above puberulous with extremely short trichomes to glabrate with scattered tri- chomes, drying olive to brown above, tan beneath, the veins pubescent, beneath and colored about the same as the surface; tendril simple, 5-7 or more cm long; petiolules 0.8-1.8 cm long, petiole 1.7-3.1 cm long, densely short-puberulous. Inflorescence an axillary panicle, its branches puberulous. Flowers with the calyx cupular, truncate, minutely 5-denticulate, 3 mm long and 2-3 mm wide, puberulous, usually with some glands; corolla lavender, campanulate, 1.3-1.8 cm long and 0.5-0.7 cm wide at the mouth, the tube 0.8-1.1 cm long, the lobes 0.3-0.5 cm long, the tube pubescent outside, abaxially pubescent inside and at the level of stamen insertion, the lobes puberulous; stamens didynamous, the anther thecae divaricate, 2 mm long, the longer filaments 0.9-1.0 cm long, the shorter filaments 0.6-0.8 cm long, the staminode 2-4 mm long, inserted 2-4 mm from base of corolla tube; pistil 1.0-1.1 cm long, the ovary oblong, densely lepidote, 1.5 mm long and 0.5-1 mm wide, the ovules 2-seriate; disc pulvinate, 1 mm long and 1-1.5 mm wide. Capsule linear, acuminate, com- pressed, 7.2-8.8 cm long and 0.6-0.8 cm wide, lepidote, drying dark brown, the midline and margins slightly raised; seeds thin, bialate, 5 mm long, 1.4-1.5 cm wide, the wings hyaline-membranaceous, distinct from the dark brown seed body.
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Habit
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Liana
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Note
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A plant mainly of the tropical dry forest, A. pubescens is widely distributed from Tamaulipas, Mexico, to Brazil, mostly near the coast. It flowers during early and mid-wet season from June to August. The complex synonymy of this species is discussed elsewhere (Gentry, Brit- tonia 25: 238-239. 1973).
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Distribution
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widely distributed from Tamaulipas, Mexico, to Brazil, mostly near the coast.
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Synonym
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CANAL ZONE: Farfan Beach Road, Gentry & Dwyer 3545 (MO). COCLE': Between Aguadulce and Ant6n, Woodson et al. 1224 (A, K, MO, NY). DARIEN: Punta Patifio NNE of Garachine, Gentry 4042 (MO). Near Punta Alegre NE of Garachine, Gentry 4060 (MO). PANAMA: Rio Las Lajas, Allen 3613 (F, GH, K, MO, NY, U, US). Mouth of Rio Pasiga, Gentry 2201 (MO). Near Panama, Hayes 93 (BM, K). Gorgona Beach, Woodson et al. 1689 (A, MO, NY). Taboga Island, Gentry 5713 (MO), Woodson et al. 1489 (A).
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