344 xlvii. § mimose^: (oliver). [Acacia 



4-9 in. long ; pinnae in 14-30 pairs ; leaflets linear, subfalcate, acute, 

 thinly silky-pubescent at least beneath, in 25-50 pairs, 2-2J- 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. Huilla, 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 uuited quite so far. 



14. A. Catechu, Willd. ; Benth. in Land. 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, 

 pubescent or glabrate, sometimes aculeolate, generally bearing several 

 sessile glands between or near the pinnae besides one towards the base ; 

 pinnae in 10-30 (or 40) pairs or alternating ; leaflets linear, more or 

 less acute, 1-2| lines long, -^—-^ m - broad, rather closely 30-50- 

 jugate. Spikes axillary, solitary or fascicled, 2-5 in. long, pubescent 

 or tomentose. Flowers subdense, sessile. Calyx campanulate, acutely 

 toothed. Petals united J-f their length, twice as long as the calyx 

 or nearly so. Legume broadly linear, straight or nearly so, flat, apicu- 

 late, shortly stipitate, 3-5 in. long, J-f in. broad, valves coriaceous, 

 glabrous, shining, reticulate, 6-8 -seeded. — A. campylacantha, Hochst. 

 and A. erythrantha, Steud. ; A. Rich. Fl. Abyss, i. 242-3. For addi- 

 tional synonymy see Mr. Bentham's memoir cited. 



Nile 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 I 

 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 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). 



Nile Land. Abyssinia, Schimper! Madi (755 and No. 9 App. Travels), Speke 

 and Grant! 

 Differs from A. Catechu in the larger ootuse leaflets and thicker legume. 



