544 XLVII, § MIMOSEZ (OLIVER). [ Acacia. 
4-9 in. lone; pinne in 14—30 pairs; leatlets linear, subfalcate, acute, 
thinly silky-pubescent at» least beneath, in 25-50 pairs, 2-2} 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. 
Upper Guinea. Senegambia, Sieber! Sierra Leone, Hutton! 
Lower Guinea. Huilia, Angola, Dr. Welwitsch! 
None of the specimens are in fruit. The only noteworthy difference that I observe 
between Dr. Welwitsch’s and the type specimen is in the more conspicuous subulate 
pilose bracteoles of the latter, which in very young spikes—long before expansion of 
the flowers—are rather conspicuously exserted. The stipes of the ovary also in the 
Angola plant may be rather longer, and the petals not united quite so far. 
14. A. Catechu, Willd. ; Benth. in Lond. Journ. Bot. 1842,570. Tree 
of large or medium size ; extremities at least at first pubescent tomentose 
or puberulous, Infra-stipular spines short, usually from a stout base, 
recurved, acute, occasionally wanting. Leaf-rachis 3—6 in. long, 
Wile Land. Abyssinia, Petit ! Schimper! Gallabat, Dr. Schweinfurth! Madi (756.5 
leaf only), and Noer Country (767.8), Speke and Grant! Sennaar, Dr. Schweinfurth. 
Mozamb. Distr. Zambesi, between Tette and the Coast, Dr. Kirk ! 
A common Indian species. 
15. A. hecataphylla, Steud. ; A. Rich. Fl. Abyss. i. 242. Tree; 
branches finely hoary-tomentose. Infra-stipular prickles short, re- 
curved, 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 elands 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). 
Nile Land. Abyssinia, Schimper! Madi (755 and No. 9 App. Travels), Speke 
and Grant ! 
Differs from A. Catechu in the larger obtuse leaflets and thicker legume. 
