Abarema lehmannii (Britton & Killip) Barneby & J.W.Grimes
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Authors
Rupert C. Barneby
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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.
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Family
Mimosaceae
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Scientific Name
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Type
"Nopaya, Colombia, 1000-2000 m altitude, Lehmann B. T. 364." — Holotypus, NY (fl.)!; isotypi, GH (fl., 2 sheets)!, K (fr.) = photo s.n., NY!, US 1242750 (fragm.)!
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Synonyms
Punjuba lehmannii Britton & Rose, Pithecellobium popayanense C.Barbosa
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Description
Species Description - Macrophyllidious trees 7-12 m, the young branches, lf-axes and inflorescence at first densely, later more thinly silky-pilosulous with either erect or narrowly ascending, weak, pale yellowish or rusty hairs, the foliage bicolored, the chartaceous lfts rich green, brunnescent when dry and glabrescent or glabrate above, beneath densely pallid-papillate overall and pilosulous at least along veins, sometimes overall, the small bronze-gold-strigulose fls borne in moderately dense spikes arising singly or geminate from the axil of coeval lvs and surpassed by them. Stipules 0 (none seen in vernation). Lf-formula i—ii/3—5(—6), the lfts (12-)16-36M4) per lf; lf-stks stout 1.2-7.5(-10) cm, commonly consisting of petiole only, this 1.2-5.5 cm, the one interpinnal segment of few lvs ±2.0-4.5 cm; petiolar nectaries of irregular development, either sessile or immersed in epidermis, flat or shallowly concave, round or transversely dilate 0.5-2 mm diam, present at tip of lf-stk and at insertion of many lft- pairs, sometimes at insertion of minute paraphyllidia; rachis of pinnae 4.5-17(—21) cm, the longer interfoliolar segments (1.2—) 1.5—2.7 cm; lft-pulvinules in dorsal view ±2-3.5 x 1.2-1.7 mm; lfts accrescent distally, the blade symmetrically ovate or elliptic from rounded or broad-cuneate base, shortly obtusely acuminate, the distal and penultimate pairs (4.5-)5- 9(—11.5) x 3-6.5 cm, 1.4—3 times as long as wide; the centric straight or slightly displaced and forwardly curved midrib giving rise to ±7-11 pairs of incurved- ascending secondary nerves brochidodrome well within the incipiently revolute margin and to random intercalary minor ones, all these and the slender tertiary and reticular venules immersed but discolored on upper face, sharply elevated beneath. Peduncles 1.5-3.5 cm; spikes ±70-130-fld, the axis becoming 5-13 cm; bracts ovate 0.3-0.7 mm, early dry caducous; perianth 5-merous, homomorphic in all fls; pedicels subobsolete, wider than long, at most 0.3 mm; calyx membranous campanulate 1.3—3(—3.4) x 1.2-1.5 mm, the depressed-deltate or triangular lobes 0.2-0.8 mm; corolla subtubular, only slightly expanded distally, (4-)4.5-7 mm, the suberect ovate lobes 0.8-1.5 x 0.55-1.1 mm; androecium 40-4-5-merous, 9.5-11 mm, the stemonozone ±1 mm, the tube 4-5.5 mm (about as long as or a little shorter than corolla); ovary slenderly ellipsoid, at anthesis glabrous, puberulent after fertilization; style about as long as longer stamens, the stigma scarcely dilated, 0.1-0.15 mm diam. Pods 1-4 per spike, in profile undulately broad-linear, recurved through 1-1.5 circles, ±12-16 (-"20") x 1-1.5 cm, 10-14-seeded, the fuscous glabrescent valves at first piano-compressed and framed by thickened, more densely golden-strigulose sutures, becoming elaborately reticulate and low-convex over seeds, the crustaceous endocarp in section ±0.3 mm thick, internally brown-red overall, smooth and lustrous in seed-cavities, somewhat furfuraceous between them, resinous mesocarp 0; funicles ribbonlike, coiled at apex; seeds plumply obovoid, in broader view ±7-8 x 6-6.5 mm, the translucent [grapeskin] testa ±0.1 mm thick in section, loosely investing the horny aniline-blue, wrinkled embryo, pleurogram 0.
Distribution and Ecology - At margin of humid montane woodland, known precisely only from 2200 to 2440 m in mun. Caldas and La Ceja of Antioquia, near 6°-6°05/N in the Cordillera Central of Colombia, the type-locality "Nopaya" not identified. — Map 24A. — Fl. IV-V; fr. I-IV(-?).
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Discussion
Abarema lehmannii is most closely related to allopatric A. josephi, which differs in higher leaf- formula, and A. killipii. The one other Abarema with long-spicate inflorescences known from Cordilleran Colombia, A. callejasii, has slenderly pedicellate, not sessile flowers, and a falcate, not coiled, pod.
We are indebted to Linda Albert de Escobar for fresh and abundant flowers and fruits of A. lehmannii from mun. Caldas near Medellín and for color photographs, now filed with the specimens at NY, showing the blue seeds against the background of red-brown endocarp that are characteristic of Abarema.
The epithet popayanense substituted by Barbosa for lehmannii, which is preoccupied in Pithecellobium but available in Abarema, was suggested (according to annotation) by Lehmann 8623 (GH) from Popayán, herein referred to var. killipii.
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Distribution
Antioquia Colombia South America|