Acacia] xliv. eeguminos*:. 311 



the extremity leafy. Frequent at the banks of the river Calucala, 

 and near Tanderaxique ; fr. Sept. 1857. Native name " Mubanga." 

 No. 18056. A tree, 15 to 20 ft. high, with a very spreading crown ; 

 branches spiny ; flowers racemose-paniculate, turning yellow. At the 

 banks of the river Calucala ; fr. Sept. 1857. Coll. Cabp. 526. 



3. A. Senegal Willd. Sp. PI. iv. p. 1077(1805) ; Benth., I.e., p. 516. 

 A. Verek Guill. & Perr. Fl. Seneg. p. 245, t. 56 (1833) ; Oliv. Fl. 



Trop. Air. ii. p. 342. 



Mossamedes. — A tree, 15 to 20 ft. high or more, with a lax crown ; 

 fresh leaves not fully developed at the time of flowering ; flowers 

 whitish or yellowish, spicate, precocious ; calyx and corolla lepidote- 

 silky ; rachis of the spikes dilated (perhaps in consequence of insect- 

 work). At the banks of the river Maiombo, near Pedra da Sola ; fl. 

 Oct. 1859. No. 1825. 



This determination is very doubtful ; Oliver, I.e., treats the plant as 

 an ally to the above-mentioned species. 



4. A. erubescens Welw. ex Oliv. Fl. Trop. Air. ii. p. 343 ; 

 Benth., I.e., p. 518. 



Bumbo. — A small, much-branched tree, 8 to 10 ft. high, copiously 

 producing excellent gum arabic ; branches patent, elongated ; branch- 

 lets flexuous ; flowers of a whitish-rose colour when fresh, at length 

 turning pale-yellow in the course of drying. In the high rocky 

 thickets of primitive forests between Bumbo and Bruco, at the base of 

 the mountains of Serra da Xella ; fl. and sparingly in foliage Oct. 1859. 

 No. 1826. 



Compare Welwitsch, Synopse, p. 49 n. 182. 



5. A. macrostachya Reichenb. ex Benth. in Hook Lond. Journ. 

 Bot. i. p. 511 (1842); Oliv., I.e., p. 343 ; Benth., I.e., p. 520. 



Huilla. — A robust shrub, or perhaps the upgrowth of a mutilated 

 tree ; petiolar and interjugal glands thick, dark-purple ; flowers 

 spicate, subsessile, turning yellow ; calyx campanulate, deeply 5- 

 toothed, with denticulate teeth green in the living state ; corolla 

 5-cleft ; petals united at the base up to the top of the calyx ; stamens 0, 

 free to the base ; ovary shortly ellipsoidal or ovoid, pilose, stipitate ; 

 stipes glabrous equalling or longer than the ovary ; style elongated ; 

 stigma rather truncate. Sparingly in tall thickets between Lopollo and 

 Jau ; fl. beginning of Feb. 1860. No. 1821. 



Considered by Oliver, I.e., p. 344 to belong to the above-cited 

 species, the type of which occurs in Upper Guinea ; he notices however 

 certain differences. 



6. A. cafira Willd. Sp. PI. iv. p. 1078 (1805) ; Oliv., I.e., p. 345 ; 

 Benth., I.e., p. 520. 



Loanda. — A much-branched and very frondose tree of moderate 

 size ; branches spiny ; flowers spicate-paniculate. On dry slopes near 

 Quicuxe ; seeds May 1854. Coll. Carp. 101 partly. 



Mossamedes. — A tree of moderate size, loosely branched. In 

 gravelly places along the banks of the river Maiombo, which was dry at 

 the time of gathering ; fr. Oct. 1859. No. 1823. 



Bumbo.— A small tree, 8 to 15 ft. high (in primitive forests a tree) ; 

 branches subscandent. In shrubby places near Bumbo at the base of 

 the mountains of Serra da Xella ; not uncommon but at the time very 

 rarely flowering ; flowers pale-yellow ; Oct. 1859. No. 1822- A talj 



