Acacia. | XLVII. § MIMOSEH (OLIVER). 347 
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 open- 
ing, 2-8 in. long. Seeds crowded, irregularly biseriate. 
Probably of American origin, and frequently cultivated throughout the Tropics for 
the sake of the perfume afforded by its flowers, but not indigenous in Tropical Africa 
unless in Angola (Loanda and Golungo Alto), where Dr. Welwitsch describes it as at 
least subspontaneous. 
21. A. Sieberiana, DC. Prod. ii. 463. A tree varying from 20-30 
ft. to more than twice the height; extremities at first villous-pubes- 
cent or pubescent, often early glabrate or obsoletely puberulous. Sti- 
pular spines straight, usually short on flowering shoots. Pinne in 
10-80 pairs; rachis pubescent or glabrate with a sessile, rather large, 
disciform gland near the base, and additional glands between the upper 
pinne ; leaflets linear-oblong, usually obtuse, in 20-40 pairs, glabrous, 
or more or less pilose; 1-2 lines long. Peduncles slender, thinly 
pubescent or pilose, 1-2 in. long, solitary from the lower axils or fas- 
cicled above ; involucel at the apex or varying to nearly the middle of 
the peduncle. Flowers capitate; calyx shortly toothed, pubescent 
above. Legume 2-valved, straight or slightly curved, compressed, acu- 
minate, much narrowed at the base, margins parallel, 6—7 in. long, 
Zin. more or less broad, seeds 13-15, uniseriate, embedded in pulp; 
valves coriaceous, dark-brown, smooth, glabrous, at length when 
mature fissuring transversely (fruit described from Dr. Welwitsch’s 
Specimens).—Benth. in Hook. Journ. Bot. 1842, 498; A. Sing, Guill. 
et Perr, Fl. Seneg. i. 251. 
Upper Guinea. Senegambia, Sieber! Déllinger! a 
Worth Central. Common 60 miles South of Kouka, H. Vogel! (A tree attaining 
80 ft., nearly wholly glabrous, rigid with fewer pinne and longer spines than in the 
ordinary state. Calyx glabrous or nearly so. This plant may prove distinct when 
ruit is found). 
Nile Land. Madi (680.5), Speke and Grant! (leafy specimen only). ; 
Upper Guinea. Ambriz, Pungo Andongo and Cazengo, Angola, Dr. Welwitsch! 
22. A. abyssinica, Hochst. ; Benth. in Hook. Journ. Bot. 1846, 97. 
Tree ; extremities softly pubescent or at length nearly glabrous.  Sti- 
pular spines very short; occasionally stipules scarcely spinose. Pinne 
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 pinn ; leaflets 
in 20-40 pairs, linear, obtuse or subacute, 1} lines long. Peduncles 
3-5 from each axil, }in. long more or less, oor tee involucellate 
near the base. Flowers capitate. Calyx-teeth pilose. Petals united 
nearly throughout, 2-3 times longer than the calyx. Legume com- 
pressed, linear-oblong, straight or subfalcate, shortly and broadly 
pointed or obtuse, at length 2-valved, valves continuous, slightly con- 
vex when mature, coriaceous, longitudinally often obsoletely areolate- 
venose ; 3—5in. long, —2in. broad.—A. aiphocarpa, Hochst. in Hb. 
Schimp. Abyss. No. 522; Benth. lc. 96. Inga Nefasia, Hochst. in Hb. 
Schimp. Abyss. No. 940. 
