Abarema leucophylla (Spruce ex Benth.) Barneby & J.W.Grimes
-
Authors
Rupert C. Barneby
-
Authority
Barneby, Rupert C. & Grimes, James W. 1996. Silk tree, guanacaste, monkey's earring: a generic system for the synandrous Mimosaceae of the Americas. Part I. Abarema, Albizia, and allies. Mem. New York Bot. Gard. 74: 1-292.
-
Family
Mimosaceae
-
Scientific Name
-
Type
". . . in sylvis siccis ad flumen Uaupés prov. do Alto Amazonas [Brazil], Spruce 2786." — Holotypus, K (herb. bentham.)! = NY Neg. 2004; isotypi, †B = F Neg. 1206, BM!, F 1540696! GH!, GOET!, K(herb. bentham.)!, (herb, hooker.)!, P (2 sheets)!, RB (2 shee
-
Description
Species Description - Macrophyllidious arborescent shrubs, treelets, or trees 1.5-21 m, attaining a trunk 1.5—4 dm dbh, the developing stems, axillary buds, young lf-stks and inflorescences minutely sordid-puberulent but all but the buds early glabrescent, the broad coriaceous lustrous bicolored lfts glabrous or minutely ciliolate, revolute-margined, the relatively few-fld capitula borne either solitary or geminate in distal lf-axils or in subterminal efoliate pseudoracemes surpassed by foliage. Stipules caducous, perhaps lacking in var. vaupesensis. Lf-formula i—ii(—iii)/l—2(—3); the lfts of larger lvs 4-16 per If; lf-stks (0.6—)1—11 cm, the petiole 0.6-4 cm, the one (or longer) interpinnal segment, if present, 1-7 cm; lf-nectaries situated immediately below first (or only) pinna-pair sessile, either scutiform, cupular or patelliform, in outline elliptic or subcircular 1.5-3.5 mm in long diameter, similar but smaller nectaries at tip of almost all pinnae; rachis of pinnae 0.8-7 cm, the interfoliolar segment(s) 1.5-3.5 cm; a small conic paraphyllidium sometimes present; lft-pulvinules in dorsal view (2.2-)2.5-6 x 1.3-2.1 mm, wrinkled; lfts 4-11 x (2-)2.6-6.2 cm; venation reticulate. Inflorescence axillary or pseudoracemose, the peduncles solitary or 2-3 together, subtended by an expanded leaf or distally by a rudimentary lf-stk; capitula 6—15-fld, the fls dimorphic, the peripheral ones pedicellate, the terminal one sessile on a short pediment and stouter, the receptacle 1.5-5 mm; bracts caducous, linear, ovate or elliptic-obovate 1-2 mm; PERIPHERAL FLS: pedicel 0.2-1.7 mm; perianth 5- merous; calyx campanulate from broad-cuneate or obconic base 2-3.6 mm, the ovate- or deltate-triangular teeth 0.4-0.9 mm; corolla 3-6.5 mm, the lobes ovate, lance-ovate or lanceolate 0.8-1.5 mm; androecium 14-24-merous, the tube 1.5-4 mm, the filaments either pink or reddish distally; ovary truncate, glabrous at anthesis; style as long as or longer than androecium, the stigma scarcely 0.1 mm diam; TERMINAL FL: calyx sessile, broadly campanulate, 2-5 x 1.8-3.5 mm; corolla 3.3-8.5 mm; androecium ±3-7.5 mm, the filaments at point of insertion much thickened and recurved. Pods 1-2 per capitulum, ascending, sessile or cuneately narrowed basally into a short neck, in profile narrow- or linear-oblong, scarcely or falcately recurved (but never coiled) 27-50 x 9-14 mm, 6-8- seeded, laterally compressed but strongly turgid, girdled by strong sutures, the valves at first yellow-green but nigrescent when dried, at maturity black or fuscous and coarsely rugulose externally, within dull crimson overall, smooth and lustrous at the seed-cavity but velvety-papillate between them; dehiscence elastic, downward through both sutures, the valves either plane or recurved into a ring (as in Calliandra) but not or little twisted; funicles strap-shaped, coiled at apex; seeds obovoid biconvex, marginally compressed, in broad view 6.5-8 x 5-6.5 mm, the very thin translucent testa subhyaline, loosely investing and not concealing the smooth tan or pearl-gray homy embryo, crumpled when dry, pleurogram 0.