Flora of Tropical Africa
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Aberia ? macrocalyx
ABERIA ? macrocalyx Oliv. [family ]
Flora of Tropical Africa, Vol 1, page 112, (1868) Author: (by Prof. Oliver).
Royal Botanic Gardens, Kew (K)
Reference Sources
A small tree with spreading branches, the extremities at first puberulous, soon glabrous and more or less verruculose, armed with slender straight spreading or ascending axillary spines, 1/2–1 in. long. Leaves thinly coriaceous, ovate-elliptical elliptical or oval, obtuse or scarcely acute, obtuse or rounded and subtriplinerved at the base, entire, the midrib prominent below, 1 1/2–2 1/2 in. long, 3/4–1 1/4 in. broad. Petiole 1 line. Flowers not seen, solitary or in few-flowered axillary fascicles. Fruit solitary, axillary, on a peduncle of 2–3 lines, articulated at the base. Sepals 6–8, persistent, free, broadly fimbriate-ciliate with numerous long, slender, minutely pilose, capitate glands, 8–10 lines long; nearly or quite equalling the orange-scarlet ovoid berry. Styles 2, short, filiform, erect, hairy, persistent. Seeds 2, imbedded in pulp, with the testa covered with a lax wool (according to Dr. Welwitsch, who describes the seed as albuminous, with a large straight embryo, ovate-cordate cotyledons, and a superior radicle).
Abrus
ABRUS Linn. [family LEGUMINOSAE-PAPILIONOIDEAE]
Flora of Tropical Africa, Vol 2, page 1, (1871) Author: Papilionaceae by Mr. J. G. Baker; Caesalpinieae and Mimoseae by Prof. Oliver)
Royal Botanic Gardens, Kew (K)
Reference Sources
A small genus, widely dispersed through the tropics.
Calyx truncate or the teeth very short. Standard ovate, narrowed into a broad short claw, more or less adherent to the staminal tube; wings narrowly falcate-oblong; keel longer and broader than the wings, arcuate. Stamens nine, connate in a sheath slit above, the tenth absent; anthers uniform. Ovary subsessile, multiovulate; style short, incurved, beardless; stigma capitate. Pod oblong or linear, plano-compressed, two-valved, subseptate between the seeds. Shrubs with elongated climbing branches.
ABRUS pulchellus Wall. [family LEGUMINOSAE-PAPILIONOIDEAE]
Flora of Tropical Africa, Vol 2, page 1, (1871) Author: Papilionaceae by Mr. J. G. Baker; Caesalpinieae and Mimoseae by Prof. Oliver)
Royal Botanic Gardens, Kew (K)
Reference Sources
An East Indian and Malayan species, and extending southward to Natal and Kaffraria.
A shrub with slender wide-climbing woody branches sometimes 20 ft. long. Stipules small, rigid, deciduous. Leaves nearly sessile; rachis 2–3 in. long; leaflets in 5–10 pairs, oblong or obovate, 3/4–1 1/4 in. long, both ends rounded, glabrous or finely silky. Racemes 2–3 in. long, lax, leafy below. Calyx a line long, glabrous or thinly silky, subtruncate, equalling the pedicel. Corolla pale purple, half an inch deep. Pod 2 in. long, 1/2 in. broad, linear, slightly recurved, the valves membranous, not papillose, finely silky when young. Seeds 7–9.
Abutilon
ABUTILON Gærtn. [family MALVACEAE]
Flora of Tropical Africa, Vol 1, page 175, (1868) Author: (by Dr. Maxwell T. Masters).
Royal Botanic Gardens, Kew (K)
Reference Sources
A widely distributed genus whose species are found throughout the tropics of both hemispheres.
Bractlets 0. Calyx 5-cleft. Column divided at the apex into numerous filaments. Ovary 5–∞-celled, each with 1–3 or rarely more ovules. Styles as many as the cells of the ovary. Ripe carpels united at the base or separate, rounded, beaked or truncate at the summit. Seeds reniform, ascending or horizontal. —Herbs or shrubs covered with down. Leaves cordate, angled or lobed. Flowers axillary or terminal.
ABUTILON asiaticum Don [family MALVACEAE]
Flora of Tropical Africa, Vol 1, page 175, (1868) Author: (by Dr. Maxwell T. Masters).
Royal Botanic Gardens, Kew (K)
Reference Sources
A widely distributed plant in the tropics.
An erect perennial whose branches are covered with down, mingled with a few villi. Leaves stalked, cordate-ovate, acute, crenate-dentate, 7–12-nerved, downy on both surfaces, stalks scarcely so long as the blades. Stipules leafy, subulate. Peduncles axillary, solitary, 1-flowered, longer than the leaves, jointed near the top. Calyx-segments deltoid, acuminate, as long or longer than the ripe fruit. Petals reddish-yellow (Vogel). Fruit subglobose, depressed in the centre, an inch or more in diameter, of 20 or more carpels, which ultimately fall away from the axis, and are reniform, 2-mucronate, downy, and 3-seeded.
ABUTILON auritum Mast. [family MALVACEAE]
Flora of Tropical Africa, Vol 1, page 175, (1868) Author: (by Dr. Maxwell T. Masters).
Royal Botanic Gardens, Kew (K)
Reference Sources
A perennial, covered for the most part with fine down, intermingled with which are a few villi. Leaves on very long hispid stalks, orbicular, cordate, acuminate, dentate, downy on both surfaces, villous or hispid along the nerves. Stipules large, oblique, broadly ovate-anceolate. Inflorescence a terminal, ultimately leafless, panicle; pedicels short, jointed below the middle. Calyx hispid, deeply 5-parted; segments ovate-lanceolate. Ripe fruit cylindrical, truncate, umbilicate, longer than the persistent calyx. Carpels 20, not seceding, oblong, subrostrate, blackish, membranous, dehiscing along the dorsal suture, each 3-seeded. Seeds covered with tufts of stellate hairs.
ABUTILON graveolens Wight et Arnott [family MALVACEAE]
Flora of Tropical Africa, Vol 1, page 175, (1868) Author: (by Dr. Maxwell T. Masters).
Royal Botanic Gardens, Kew (K)
Reference Sources
A tall perennial covered with down, interspersed among which are a few spreading villi. Leafstalks as long as the leaves, the latter orbicular-cordate, acuminate, coarsely dentate, 7–12-nerved. Pedicels solitary, axillary, jointed, shorter than the leafstalks. Calyx cup-shaped, 5-fid, its 5 segments oval, cuspidate, shorter than the yellow corolla, but about equalling the ripe fruit, which latter is subglobose and consists of 20 carpels ultimately seceding from the axis. Carpels membranous, oblong, somewhat rounded at the apex, shortly beaked or muticous. Seeds reniform, 3 in each carpel.
ABUTILON longicuspe Hochst. [family MALVACEAE]
Flora of Tropical Africa, Vol 1, page 175, (1868) Author: (by Dr. Maxwell T. Masters).
Royal Botanic Gardens, Kew (K)
Reference Sources
A shrubby, much-branched plant, thickly beset with fine down. Leaves stalked, cordate, broadly ovate, with long points, serrate, palmately 5–7-nerved, paler beneath. Flowers numerous, in large, terminal, much-branched, ultimately leafless clusters. Pedicels jointed. Calyx broadly cup-shaped, 5-cleft; segments acute, about one-third the length of the purplish reflected corolla. Fruit subglobose, umbilicate, downy, longer than the persistent calyx. Carpels about 20, obtuse, reniform, 1-seeded, ultimately seceding from the axis.
ABUTILON macropodum Guill. et Perr. [family MALVACEAE]
Flora of Tropical Africa, Vol 1, page 175, (1868) Author: (by Dr. Maxwell T. Masters).
Royal Botanic Gardens, Kew (K)
Reference Sources
A low-growing, much-branched, suffrutescent perennial, the younger shoots and leaves downy. Petioles 1–2 in. long, equalling the leaves, which are cordate, roundish, obscurely 3-lobed; lobes broad entire or crenate. Stipules linear. Pedicels nearly as long as the leaves, simple, solitary, axillary, 1-flowered, thickened at the apex, jointed. Sepals ovate, acute, slightly cuspidate, downy, much shorter than the ripe fruit, which is cylindrical, truncate, scarcely an inch long, about an inch across, and consisting of 20 or more membranous, readily-separable carpels, each terminated by two awns, which are at first erect and ultimately spread horizontally. Seeds large; columella thick cylindrical or clavate, longer than the calyx.
Acacia
ACACIA Willd. [family LEGUMINOSAE-MIMOSOIDEAE]
Flora of Tropical Africa, Vol 2, page 1, (1871) Author: Papilionaceae by Mr. J. G. Baker; Caesalpinieae and Mimoseae by Prof. Oliver)
Royal Botanic Gardens, Kew (K)
Reference Sources
A very large genus, of which a great proportion is peculiar to Australia, the rest scattered through tropical and subtropical regions of both hemispheres. No subgenus or section is peculiar to Africa, although many of the species appear to be so.
Flowers capitate or spicate, sessile or very shortly pedicellate, usually 5–4-merous. Calyx campanulate or funnel-shaped, toothed or lobed. Petals free or united more or less, valvate. Stamens indefinite, exserted, free or consolidated at base with the disk; anthers minute; “pollen usually cohering in 2–4 masses in each cell.” Ovary sessile or stipitate; ovules few or many; style slender with a small terminal stigma. Legume usually linear or oblong, flat, convex or terete, straight falcate or twisted, membranous coriaceous or woody, 2-valved or indehiscent, continuous or septate within; very rarely separating into articles. Seeds compressed. Trees or shrubs, in African species usually spinose. Leaves bipinnate. Stipules spinescent, inconspicuous or submembranous. Bracts usually cohering in an involucel towards the middle, or at one extremity of the peduncle.
ACACIA abyssinica Hochst. [family LEGUMINOSAE-MIMOSOIDEAE]
Flora of Tropical Africa, Vol 2, page 1, (1871) Author: Papilionaceae by Mr. J. G. Baker; Caesalpinieae and Mimoseae by Prof. Oliver)
Royal Botanic Gardens, Kew (K)
Reference Sources
Tree; extremities softly pubescent or at length nearly glabrous. Stipular spines very short; occasionally stipules scarcely spinose. Pinnæ in 6–30 pairs from a pubescent or glabrous rachis with or without a gland near the base and one or two between the upper pinnæ; leaflets in 20–40 pairs, linear, obtuse or subacute, 1 1/2 lines long. Peduncles 3–5 from each axil, 1/2 in. long more or less, pubescent, involucellate near the base. Flowers capitate. Calyx-teeth pilose. Petals united nearly throughout, 2–3 times longer than the calyx. Legume compressed, linear-oblong, straight or subfalcate, shortly and broadly pointed or obtuse, at length 2-valved, valves continuous, slightly convex when mature, coriaceous, longitudinally often obsoletely areolate-venose; 3–5 in. long, 2/3– 3/4 in. broad.
ACACIA amythethophylla Steud. [family LEGUMINOSAE-MIMOSOIDEAE]
Flora of Tropical Africa, Vol 2, page 1, (1871) Author: Papilionaceae by Mr. J. G. Baker; Caesalpinieae and Mimoseae by Prof. Oliver)
Royal Botanic Gardens, Kew (K)
Reference Sources
Tree of medium size; extremities puberulous. Stipular spines minute or stipules near the base of the shoots scarcely spinescent. Leaves 1/2–1 ft. long, rachis puberulous or glabrate “with a gland near the base”; pinnæ in 12–30 pairs; leaflets 30–50-jugate, linear-oblong, obliquely pointed, glabrous, 2–2 1/2 lines long. Peduncles 1/2–1 in. long, involucellate near the middle, fascicled 3–5 in each node along a leafless terminal raceme 1/2– 3/4 ft. in length. Flowers capitate. Calyx minute, denticulate. Petals connate, 3–4 times exceeding the calyx. Legume (according to Dr. Schweinfurth) linear-oblong, flat, 4–6 in. long, 7–8 lines broad, valves coriaceous, shining, obsoletely veined. Seeds 8–12.
ACACIA Caffra Willd. [family LEGUMINOSAE-MIMOSOIDEAE]
Flora of Tropical Africa, Vol 2, page 1, (1871) Author: Papilionaceae by Mr. J. G. Baker; Caesalpinieae and Mimoseae by Prof. Oliver)
Royal Botanic Gardens, Kew (K)
Reference Sources
Common in some parts of South extra-tropical Africa.
Attaining about 20 ft.; extremities pubescent or glabrous. Infra-stipular spines short, dilated at the base, usually slightly recurved at the apex, frequently wanting; occasionally similar thinly scattered spines occur on the internodes. Leaf-rachis usually puberulous, sometimes aculeolate bearing a sessile gland near the base, 2–4 in. long; pinnæ in 6–14 pairs; leaflets linear-oblong, broadly pointed or obtuse, 2 lines long, and 1/2 line broad more or less, in 20–40 pairs. Spikes dense, shortly pedunculate, solitary or in fascicles of 2 or 3, shorter than or occasionally exceeding the leaves. Flowers sessile. Calyx cupuliform, teeth 1/3– 1/2 its depth. Petals narrowed and free at the base, united at the middle; but slightly exceeding the calyx. Legume linear, straight, flat, acuminate or apiculate, stipitate, valves coriaceous, glabrous, obscurely transversely veined, 5–8-seeded, 2 1/2–4 in. long, 1/3– 2/3 in. broad.
ACACIA Ehrenbergiana Hayne [family LEGUMINOSAE-MIMOSOIDEAE]
Flora of Tropical Africa, Vol 2, page 1, (1871) Author: Papilionaceae by Mr. J. G. Baker; Caesalpinieae and Mimoseae by Prof. Oliver)
Royal Botanic Gardens, Kew (K)
Reference Sources
A shrub; extremities smooth, shining, chestnut-brown. Stipular spines usually exceeding the leaves, slender, spreading, straight. Leaves small, puberulous or glabrate; pinnæ 1–2-jugate, leaflets 8–10-jugate, oblong, obtuse, midrib obscure, 1–1 1/2 lines long. Flowers capitate. Peduncles solitary or fascicled in the axils, exceeding the leaf, bearing the involucel near or below the middle. Petals united 2/3 their length, twice as long as the calyx. Legume narrow-linear, falcate, broadly constricted between the seeds, varying to 4 1/2 in. in length.
ACACIA erubescens Welw. [family LEGUMINOSAE-MIMOSOIDEAE]
Flora of Tropical Africa, Vol 2, page 1, (1871) Author: Papilionaceae by Mr. J. G. Baker; Caesalpinieae and Mimoseae by Prof. Oliver)
Royal Botanic Gardens, Kew (K)
Reference Sources
A small much-branched tree; extremities obsoletely pubescent, pale cinnamon-brown. Infra-stipular prickles short, sharply recurved. Leaf-rachis 1–1 1/2 in., slender, thinly pubescent, with a sessile small gland below the lowest pinnæ; pinnæ in 4–5 pairs, leaflets 10–14-jugate, linear-oblong, obliquely broadly pointed, glabrous, drying pale green, 2–3 lines long. Spikes axillary on leafless branches, about 1 1/2 in. long with the short peduncle, rather dense. Flowers rose-white (grey-yellow when dry), sessile. Calyx cupuliform, 5-fid, with ovate- or oblong-lanceolate teeth, clothed with short dense grey tomentum. Petals united two-thirds their length, rather longer than the calyx and similarly pubescent externally. Ovary very shortly stipitate. Legume not seen.
ACACIA Farnesiana Willd. [family LEGUMINOSAE-MIMOSOIDEAE]
Flora of Tropical Africa, Vol 2, page 1, (1871) Author: Papilionaceae by Mr. J. G. Baker; Caesalpinieae and Mimoseae by Prof. Oliver)
Royal Botanic Gardens, Kew (K)
Reference Sources
Small tree or shrub; extremities glabrous or obsoletely pubescent, slightly zigzag from node to node. Stipular spines slender, straight. Pinnæ in about 6 (4–8) pairs; rachis pubescent or glabrate, usually with a minute, sessile gland near the base; leaflets in 12–20 pairs, linear-oblong, obtuse or broadly acute, glabrous or glabrate, 2–3 lines long. Peduncles 1–3 from each axil, 1/2–1 1/2 in. long, slender, pubescent or glabrate; bracts immediately under the globose head. Calyx denticulate, glabrous. Petals united nearly throughout, twice as long as calyx. Legume turgid, cylindrical, or subfusiform, straight or curved, finely obliquely striate, glabrous, indehiscent or tardily opening, 2–3 in. long. Seeds crowded, irregularly biseriate.
ACACIA glaucophylla Steud. [family LEGUMINOSAE-MIMOSOIDEAE]
Flora of Tropical Africa, Vol 2, page 1, (1871) Author: Papilionaceae by Mr. J. G. Baker; Caesalpinieae and Mimoseae by Prof. Oliver)
Royal Botanic Gardens, Kew (K)
Reference Sources
Tree or large shrub, wholly glabrous or extremities puberulous; branches brown or reddish-brown to grey. Infra-stipular prickles geminate or ternate, short, straight or slightly recurved, frequently wanting. Leaf-rachis from 1 1/2–3 1/2 in., minutely pubescent or glabrous, usually with a small gland near the base; pinnæ 3–6-jugate, leaflets in 12–20 pairs, oblong or oval-oblong, obtuse, 3–5 lines long. Inflorescence and flowers as in A. Verek, the spikes usually shorter than the leaves. Ovary glabrous. Legume linear, straight, flat, apiculate or acuminate, narrowed at base, 3–4 1/2 in. long, 1/2– 2/3 in. broad, valves thinly coriaceous, glabrous, finely transversely reticulate, slightly convex over each seed. “Seeds oval, longer than broad” (Schweinfurth).
ACACIA hebeclada DC. [family LEGUMINOSAE-MIMOSOIDEAE]
Flora of Tropical Africa, Vol 2, page 1, (1871) Author: Papilionaceae by Mr. J. G. Baker; Caesalpinieae and Mimoseae by Prof. Oliver)
Royal Botanic Gardens, Kew (K)
Reference Sources
Also south of the Tropic.
Branches pubescent. Spines scarcely exceeding 1/2 in. in our specimens, the lowest of each shoot short, slightly curved, the upper straight. Pinnæ in 2–7 pairs; rachis pilose-pubescent, interpinnal glands very minute; leaflets linear-oblong, broadly acute or obtuse, thinly ciliolate or glabrous, in 8–15 pairs. Peduncles solitary or 2 or 3 from each axil, 1/2–1 1/4 in. long; bracts minute at the base (or occasionally near the middle?) of the peduncle. Flowers capitate. (Calyx denticulate, pilose-margined, half as long as petals in the Cape form.) Legume straight, thick, 2-valved, with a continuous cavity, oblong or linear-oblong, obtuse or apiculate, compressed, valves continuous, woody, longitudinally faintly ridged, 3–6 in. long, 3/4–1 in. broad, nearly 1/2 in. in thickness. Seeds compressed, with a long funicle, broadly elliptical or roundish, 1/3– 1/2 in. long.
Acacia hecataphylla
ACACIA hecataphylla Steud. [family LEGUMINOSAE-MIMOSOIDEAE]
Flora of Tropical Africa, Vol 2, page 1, (1871) Author: Papilionaceae by Mr. J. G. Baker; Caesalpinieae and Mimoseae by Prof. Oliver)
Royal Botanic Gardens, Kew (K)
Reference Sources
Tree; branches finely hoary-tomentose. Infra-stipular prickles short, recurved, often wanting. Foliage and inflorescence as described of A. Catechu, excepting that the leaflets are larger, oblong, and obtuse, 2–3 lines in length, about 1 line broad, and the glands of the rachis fewer. Flowers sessile, pubescent; petals united near the middle, but slightly exceeding the calyx. Legume oblong, obtuse 4 (3–7) in. long, 1 in. broad, valves firmly coriaceous, irregularly and rather obscurely reticulate when ripe, the obscurely raised branching nervures ramifying irregularly, not generally transversely. Seeds about 5 (3–7).
ACACIA Kirkii Oliv. [family LEGUMINOSAE-MIMOSOIDEAE]
Flora of Tropical Africa, Vol 2, page 1, (1871) Author: Papilionaceae by Mr. J. G. Baker; Caesalpinieae and Mimoseae by Prof. Oliver)
Royal Botanic Gardens, Kew (K)
Reference Sources
Very nearly allied to A. arabica, from which it principally differs in the tuberculate articles of the legume. Spines straight, slender. Pinnæ in 6–8 pairs with a sessile gland between the lowest and one or two of the upper or all the pairs, rachis pubescent; leaflets in 10–15 pairs, linear, subacute. Inflorescence and bracts as in A. arabica. Calyx shortly and obtusely toothed. Petals connate 3/4 of their length, scarcely twice as long as the calyx. Legume linear, compressed, more or less distinctly moniliform, glabrous, each article with a prominent central tubercle.
ACACIA Lahai Steud. et Hochst. [family LEGUMINOSAE-MIMOSOIDEAE]
Flora of Tropical Africa, Vol 2, page 1, (1871) Author: Papilionaceae by Mr. J. G. Baker; Caesalpinieae and Mimoseae by Prof. Oliver)
Royal Botanic Gardens, Kew (K)
Reference Sources
A small or medium-sized tree; extremities glabrous, with a brownish or ashen bark. Stipular spines occasionally very short, usually prominent, patent, straight, 1/2–2 in. long, flattened below on the upper face. Leaves puberulous or glabrescent; rachis 1 1/2–4 in., with a small gland near the base; pinnæ in 7–13 pairs; leaflets linear-oblanceolate or linear, rather obtuse, in 12–26 pairs, 1 1/2–2 lines long. Spikes axillary solitary or 2–3 together, 2–4 in. long. Flowers sessile. Petals free at the apex, about 4 times as long as the short deltoid-toothed calyx. Legume broadly oblong, obtuse, minutely apiculate, abruptly narrowed at base into a stipes of 1/4– 1/2 in., flat, valves coriaceous, brown, shining, much reticulate, 2–2 1/2 in. long, 3/4–1 1/6 in. broad.
ACACIA lasiopetala Oliv. [family LEGUMINOSAE-MIMOSOIDEAE]
Flora of Tropical Africa, Vol 2, page 1, (1871) Author: Papilionaceae by Mr. J. G. Baker; Caesalpinieae and Mimoseae by Prof. Oliver)
Royal Botanic Gardens, Kew (K)
Reference Sources
Extremities uniformly softly hoary-tomentose. Stipular spines straight or subrecurved, pubescent nearly to the apex. Young leaves, especially on the rachis, silky tomentose; pinnæ in 14–22 pairs; leaflets 20–30 pairs, probably often more numerous, not wholly developed in our specimens; gland sessile near the base of the rachis. Peduncles in pairs or solitary from the lower axils, pubescent, 1–2 in. long. Bracts obsolete. Flowers capitate. Calyx pilose-pubescent, lobes ovate obtuse. Petals externally silky, cohering 1/2 or 2/3 their length, about half as long again as the calyx. Ovary subsessile, glabrous, subtruncate above, with an obliquely inserted filiform style. Fruit unknown.
Acacia læta
ACACIA læta R. Br. [family LEGUMINOSAE-MIMOSOIDEAE]
Flora of Tropical Africa, Vol 2, page 1, (1871) Author: Papilionaceae by Mr. J. G. Baker; Caesalpinieae and Mimoseae by Prof. Oliver)
Royal Botanic Gardens, Kew (K)
Reference Sources
A small or moderate-sized tree, wholly glabrous. Extremities brown, smooth, with short black and shining hooked infra-stipular prickles, or wholly unarmed. Leaves glaucous, scarcely exceeding 2–3 in. in length; pinnæ lax in 2–3 pairs; leaflets oblanceolate- or obovate-oblong oblique, obtuse, often mucronulate, subsessile, in 3–5 pairs; 1/4– 1/3 in. long, 1 1/2–2 lines broad above. Spikes axillary, solitary or fascicled, equalling or exceeding the leaves. Flowers subsessile. Calyx broadly and shortly toothed. Petals at least at first united about 2/3 their length. Ovary glabrous, shortly stipitate. Legume flat, oblong, often once or twice constricted owing to abortion of seeds, obtuse or pointed; valves thinly coriaceous, transversely reticulate, glabrous, shortly stipitate, 2–3 in. long, 3/4–1 in. broad.
ACACIA macrostachya Reichenb. [family LEGUMINOSAE-MIMOSOIDEAE]
Flora of Tropical Africa, Vol 2, page 1, (1871) Author: Papilionaceae by Mr. J. G. Baker; Caesalpinieae and Mimoseae by Prof. Oliver)
Royal Botanic Gardens, Kew (K)
Reference Sources
Extremities rusty tomentose-pubescent, with scattered occasionally infra-stipular short recurved prickles. Leaf-rachis similarly pubescent with a conspicuous oblong sessile gland near the base, 4–9 in. long; pinnæ in 14–30 pairs; leaflets linear, subfalcate, acute, thinly silky-pubescent at least beneath, in 25–50 pairs, 2–2 1/2 lines long. Stipules ovate or semi-cordate, deciduous. Spikes axillary, usually fascicled, 3–4 in. long, rather lax, sometimes racemose from the axils of reduced leaves towards the extremities. Flowers sessile. Calyx shortly toothed. Petals united nearly throughout, 3–5 times longer than the calyx. Ovary villous, stipitate.
ACACIA nigrescens Oliv. [family LEGUMINOSAE-MIMOSOIDEAE]
Flora of Tropical Africa, Vol 2, page 1, (1871) Author: Papilionaceae by Mr. J. G. Baker; Caesalpinieae and Mimoseae by Prof. Oliver)
Royal Botanic Gardens, Kew (K)
Reference Sources
Arborescent, wholly glabrous; young shoots, peduncles, and leaves more or less glaucous. Infra-stipular spines geminate, very acute, short or sharply recurved, brownish-black. Leaves 1 1/2–2 1/2 in. long; rachis slender, with 1 (or 2) slightly elevated gland; pinnæ 3-jugate; leaflets 1-jugate, broadly and very obliquely obovate-rotundate, entire or retuse, reticulate, drying blackish paler beneath, 1/3– 1/2 in. long, 3–5 lines broad. Spikes axillary, solitary in our specimen, a little exceeding the leaves; flowers rather lax at least below, sessile or subsessile. Calyx deeply rather acutely toothed. Petals free, twice as long as the calyx. Ovary glabrous, on a stipes of its own length. Legume not seen.
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