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Project Name Data (Last Modified On 11/15/2012)

Flora Data (Last Modified On 11/15/2012)
PlaceOfPublication Sp. P1. 4:1091. 1806.
Synonym Mimosa tenuifolia L. Sp. P1. 523. 1753. Acacia paniculata Willd. Sp. P1. 4:1074. 1806. Mimosa grandisiliqua Vell. Fl. Flum. Ic. 11:t. 37. 1827, fide Benth. Acacia grandisiliqua Benth. in Hook. Lond. Jour. Bot. 1:518. 1842. Acacia Clausseni Benth., loc. cit. 1842, fide Benth. Acacia martinicensis Presl, Bot. Bemerk. 65. 1844, fide Britt. & Rose. Acacia microcephala A. Rich. Ess. Fl. Cub. 1:469. 1845, fide Britt. & Rose. Senegalia tenuifolia Britt. & Rose, in N. Am. Fl. 23:118. 1928.
Description Tall liana, climbing through tops of trees, the branchlets puberulent or minute- ly tomentose, armed with broad-based, recurved thorns. Leaves large, bipinnate, the pinnae 20 or more pairs opposite on the rachis, leaflets numerous (about 70 pairs); petiole up to a few cm. long, terete, lightly tomentulose or puberulent, armed, bearing about 1 cm. from the base a sessile, longitudinally oblong gland; rachis about 20 cm. long, flattened or subsulcate and puberulent or tomentose above, armed with thorns, bearing at the uppermost several rachial nodes prominent orbicular glands; pinnular rachis about 7 cm. long, glabrous below, tomentose above, eglandular; leaflets asymmetrically linear, about 4 mm. long and less than 1 mm. wide, broadly and inequilaterally acute apically, obliquely truncate basally, glabrous except ciliate-margined, the costa excentric, secondary veins prominent below but not above, dull; stipules caducous. Inflorescence paniculate, up to 3 or more dm. long, the primary axis armed, tomentulose; ultimate divisions of 1 to few pedunculate heads from nodes on which leaves have not yet developed; peduncles mostly 10-15 mm. long, tomentulose; heads several-flowered, globose, the floral bracts minute. Flowers dense, white; calyx funnelform-cupulate, about 1 mm. long, puberulent; corolla funnelform, scarcely 2 mm. long, minutely puberulent, deeply lobed; stamens many, 3-4 mm. long, glabrous, free except at the extreme base; anthers mostly eglandular (some apparently abortively glandular in bud); ovary pubescent, long-stipitate. Legume presumably linear-oblong, flat, thin, non-septate, glabrous in age.
Habit liana
Distribution Mexico to middle South America; West Indies.
Specimen DARIEN: R. Chico, Allen 4646; El Real, Allen 961. SAN BLAS: Puerto Obaldia, pittier 4326.
Note Britton and Rose (N. Am. Fl. 23) and various other authors have not recog- nized the synonymy of the South American A. paniculata and several Central American and Mexican "species" which probably represent the Linnean name A. tenuifolia. Yet a comparison of a series of Mexican, Central American, and West Indian specimens with South American material shows remarkably little difference. I have thus accepted Bentham's judgment that A. paniculata and A. tenuifolia are the same, and constitute merely one, not overly variable, species.
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