Acaw,a.\ xlvti. § mimose^: (oliver). 341 



free, twice as long* as the calyx. Ovary glabrous, on a stipes of its 

 own length. Legume not seen. 



Mozamb. Distr. Near Mitonda, Shire river, Dr. Kirk ! 



5. A. lseta, R. Br. ; Benth. in Hook. Journ. Bot. 1842, 508. A smail 

 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 ; 

 pinnae lax in 2-3 pairs ; leaflets oblanceolate- or obovate-oblong ob- 

 lique, obtuse, often mucronulate, subsessile, in 3-5 pairs ; \-^ in. long, 

 1 j-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 | N 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, f-1 in. broad. — Schweinf. Acacien-arten d. Nilgebiets, 

 367, t. 19, 20, 21 ; Keliq. Kotschyanae, t. 1, 2. 



Nile Land. Abyssinia, Salt; Schimper! Nubia, Dr. Schweinf urth ! 



6. A. venosa, Hochst. ; Benth. in Lond. Journ. Bot. 1846, v. 98. 

 Shrub or small tree, branches pale, wholly glabrous, or young shoots 

 at first and peduncles puberulous. Infra- stipular spines very short, 

 hooked, often wanting* Leaf-rachis 2-3 in., slender, with or without 

 a small sessile gland near the base ; pinnae in 3-5 (-7) subdistant pairs ; 

 leaflets rather distant, 5-8-(-10) jugate, broadly oblanceolate obovate- 

 oblong or oblong-obtuse, paler or glaucous beneath, minutely petiolu- 

 late, 3-5 lines long. Spikes in axillary fascicles of 2-5, developed 

 before or with the young leaves, 1-1 \ in. long. Flowers (rose-coloured) 

 rather lax, sessile, glabrous, excepting the short obtuse calyx-lobes. 

 Petals united to the middle, more than twice as long as the calyx. 

 Legume linear-oblong, flat, straight, 4-6 in. long, j-1 in. broad, valves 

 continuous or slightly sinuous, thinly coriaceous, transversely reticulate, 

 glabrous, 5-7-seeded. — A. sanguinea, Hochst. ; A. Rich. Fl. Abyss, i. 

 245 ; Schweinf. Acacien-arten d. Nilgebiets, 364. 



Nile Land. Abyssinia, Schimper ! Capt. Pullenf 



7. A. Welwitschii, Oliv. A tree of moderate size ; extremities 

 wholly glabrous, dark-coloured, sometimes glaucous. Infra-stipular 

 prickles, short, black, polished, hooked. Leaves about 3-5 in. long, 

 glabrous ; rachis slender, with a sessile gland below the lowest pinnae ; 

 pinnae 4-3-2-jugate ; leaflets elliptical or varying from ovate to ob- 

 ovate, obtuse, obscurely apiculate cr mucronulate, smooth or shining 

 above, \-% in. long, 2-5 lines broad, in 3-6 pairs, minutely petiolulate. 

 Spikes slender in bud, rather lax, 2 or 3 from each axil, or on short 

 axillary leafless shoots sometimes panicled at the extremities. Flowers 

 subsessile. Calyx campanulate, 5- fid. Petals free near the base, 

 scarcely more than twice as long as the calyx. Legume straight, flat, 



