Acacia. | XLVII. § MIMOSEEH (OLIVER). 351 
the lowest and one or two of the upper or all the pairs, rachis pubes- 
cent; leaflets in 10-15 pairs, linear, subacute. Inflorescence and 
bracts as in A. arabica. foie shortly and obtusely toothed. Petals 
connate ? 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. 
South Central. Highlands of Batoka country, Dr. Kirk! 
31. A. Seyal, Delile, Fl. d’ Egypte, 142, t. lii. 2. A small or medium- 
sized tree ; extremities glabrous or obsoletely puberulous; bark brown 
or reddish-brown (milk-white in var. fistula). Stipular spines patent, 
1-2 in. long, rather slender, at length ivory-white, toward the ex- 
tremity of flowering branches frequently very short, recurved. Leaves 
glabrous; pinnie in 3-9 pairs; rachis usually with at least one gland ; 
leaflets linear-oblong obtuse, in 8-20 pairs, 14-24 lines long. Pe- 
duncles 1-5 from each node, occasionally shortly panicled or racemose, 
i-li in. long, glabrous, bearing the deciduous involucel below the 
middle. Flowers capitate. Calyx-teeth short, obtuse. Petals united 
? their length or more, twice as ne as the calyx. Legume linear, 
falcate, slightly but distinctly broadly constricted between the longi- 
tudinally disposed seeds, narrowed at each end; valves coriaceous, 
longitudinally areolate-nervose, 3-6 in. long, —} in. broad.—A. Gi- 
raffe, Sieb. Herb. Seneg. 
Upper Guinea. Senegambia, Sieber! Lelieur! 
North Central. Forming woods of encrmous extent between the 12th and 16th 
parallels, and occurring in isolated examples in dry stony places (not in sand) from the 
Black Mountains (29° N. lat.) to Kouka, E. Vogel ! 
Nile Land. Abyssinia, Schweinfurth! Upper Nile, 9° N. lat. (767.7), Speke and 
Grant! Nubia, Dr. Schweinfurth! : 
Mozamb. Distr. Manganya hills, Zambesi land, Dr. Meller! 
Var. fistula (A. fistula, Schweinf. in Acacien-arten d. Nilgebiets, 344, t. 11-13). 
Branches with a smooth milk-white bark. Leaflets often } in. long. Legumes as in 
the type, }—J in. broad. ; 3 ice 
Nile Land. Matamma, Dr. Schweinfurth! who also cites it as occurring in 
Sennaar, and forming woods in Southern Nubia. The stipular 5 dees are very subject 
to a monstrous dilatation at the base, owing to insect-puncture. I should scarcely have 
reduced this plant to A. Seyal, were it not that we possess a specimen connecting the 
forms in the collection of Speke and Grant. 
32. A. stenocarpa, Hochst.; A. Rich. Fl. Abyss. i. 238. Tree; ex- 
tremities brownish or red-brown, glabrous or minutely puberulous. 
Stipular spines usually very short, straight or obsolete. Leaves glabrous 
or glabrescent, rachis with at least a conspicuous sessile gland near the 
base ; pinne in 4-10 pairs; leaflets linear-oblong, somewhat pointed, 
1-25 lines long, in 10-20 pairs. Peduncles 4-1 in. long, 1-5 from 
each axil, or in short terminal or axillary leafless racemes, glabrous or 
puberulous, with a conspicuous early separating involucel near the base 
or towards the middle. Flowers capitate. Calyx oboe dentate. 
Petals connate nearly throughout. Legume narrow-linear, flat, falcate 
or curved nearly to a circle, scarcely or not at all constricted between 
