Jacaranda cowellii Britton & P.Wilson
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Authority
Gentry, Alwyn H. 1992. Bignoniaceae--part II (Tribe Tecomeae). Fl. Neotrop. Monogr. 25: 1-370. (Published by NYBG Press)
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Family
Bignoniaceae
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Scientific Name
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Type
Type. Cuba. Las Villas: Santa Clara, Britton & Cowell 13316 (NY).
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Synonyms
Jacaranda variifolia Urb.
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Description
Species Description - Shrub 1-2 m tall, the branchlets terete, sparsely minutely puberulous, with or without whitish lenticels. Leaves mostly simply pinnate (occasionally in part bipinnate with 15-25 pinnae), each pinna 1-8 cm long, with glabrous rachis (occasionally with a few minute trichomes) and 15-50 minute subsessile, suborbicular leaflets, these 1-3 mm long and 1-2 mm wide, glabrous or with a few longish trichomes along midvein below and sometimes a few minute trichomes above, the margin entire, very strongly involute, the tiny slender petiolules less than 0.5 mm long. Inflorescence a reduced narrow panicle or few-flowered raceme, sparsely puberulous in part with gland-tipped trichomes, the bracts early caducous. Flowers with the calyx cupular, acutely 5-dentate to near middle, 2 mm long, 2 mm wide, rather sparsely puberulous with simple and gland-tipped trichomes; corolla purplish blue, tubular-campanulate above a narrow neck which is somewhat enlarged toward the base, 2-3(-3.5) cm long, 0.7-1 cm wide at the mouth, the lobes ca. 0.5 cm long, the tube 1.5-2.5 cm long, rather sparsely puberulous with simple and glandular trichomes outside, more densely glandular pubescent near base, mostly glabrous inside except at the stamen insertion; stamens didynamous, the anthers monothecate, the second theca reduced to a minute appendage; ovary flattened-ovate, glabrous. Fruit elliptic, obtuse at apex, ca. 3 cm long, ca. 1.7 cm wide, the margin not undulate at dehiscence, glabrous, seeds not seen.
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Discussion
Very distinctive in the simply pinnate leaves with minute suborbicular leaflets; occasionally partially bipinnate variants are differentiable from Hispaniolan J. ekmannii by the minute but clearly demarcated petiolules.
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Objects
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Distribution
Serpentine barrens of central and eastern Cuba in Las Villas, Camagüey, and Oriente Provinces.
Cuba South America| Camagüey Cuba South America| Holguín Cuba South America| Villa Clara Cuba South America|