Acacia] xliv. leguminos^e. 313 



The following No., represented by a fragmentai-y and quite 

 incomplete specimen, should be compared with this species : — 



Prince's Island.— A little shrub, 2 ft. high, with a spiny stem ; 

 without either fl. or fr. Sept. 1853. No. 1834. 



9. A. Sieberiana DC. Prodr. ii. p. 463 (1825) ; Oliv., I.e., p. 347 ; 

 Benth., I.e., p. 503; Ficalho, PI. Uteis, p. 176 (1884); nee Scheele 

 nee Tausch. 



Ambriz. — A tree, about 20 to 25 ft. high, with a very beautiful 

 dilated crown ; spines 2 to 3 in. long, very hard and acute, the older 

 ones quite white ; flowers yellowish ; heads the size of a pea. In the 

 rather dry thickets on hilly ground covered with a thin coarsely-sandy 

 soil, in company with various Capparideae ; between Ambriz and 

 Mubanga ; with fl. and fr. on the same tree, Nov. 1853. No. 1801. 

 Spines white, very long ; seeds, Nov. 1853. Coll. Carp. 518. 



Cazengo. — A tree, 20 ft. high, with irregular rambling divaricate 

 branches ; spines and bark whitish. Sporadic, in elevated wooded 

 places, from Serra de Muxaula in the direction of Cacula, with nearly 

 ripe fr. June 1855. No. 1817- 



Pungo Andongo. — A tree, 15 to 30 ft. high, with a depressed-dilated 

 crown ; wood whitish, rather hard ; flowers whitish. Frequent through- 

 out the district, from the fortress of Pungo Andongo as far as Quisonde ; 

 fl. Dec. 1856, in young fr. April 1857. Native name "Mussongue" or 

 "Mussonde." No. 1815. 



The two following Nos. may belong to the same species : — 



Pungo Andongo. — Shrubby, 2 to 3 ft. high ; branches elongated, very 

 patent, sometimes even decumbent, with white spines. Perhaps a 

 young sterile subglabrous state of the last. Native name "Mussongue." 

 Frequent in all the thickets about the fortress as far as Luxillo ; 

 without either fl. or fr. May 1857. No. 1816. 



Htjilla. — A small tree, 6 to 7 ft. high. In the rather dry dense 

 rocky woods, at an elevation of about 4000 ft., on the summit of the 

 mountains of Serra da Xella, i.e., Cume da Xella ; with foliage, but 

 without either fl. or fr. Oct. 1859 ; in company with Tarchonanthus (or 

 a plant of this general appearance ; cf. Herb. No. 6745). No. 1823. 



The three following Nos. must be compared with this species : — 



Ambaca. — A small shrub, 3 to 4 ft. high, with several stems, 

 apparently the upgrowth from the rootstock of a burnt tree. In little 

 woods composed of Cussonia angolensis Hiern, between Isange and 

 N-gombe ; without either fl. or fr. Oct. 1856. No. 1802. 



Golungo Alto. — In bushy forests among the mountains of Serra 

 de Alto Queta, on rather barren slopes scattered with flint stones. 

 Spiny branches without either foliage fl. or fr. July 1855. No. 1803. 

 Flowers yellow ? ; near Undella, fr. Coll. Carp. 523. 



Mossamedes. — A young bush, 5 to 6 ft. high, already much branched 

 from the base ; lateral branches 3 ft. long. In sandy thickets at Boca 

 do Bero ; without either fl. or fr. July 1859. No. 1831. 



10. A. refieiens Wawra in Wawra & Peyr. Sert. Benguel. in 

 Sitz. Ber. Wien, xxxviii. p. 555 (1859) ; Oliv., I.e., p. 348 ; Benth., 

 l.c, p. 505 (1875). 



Mossamedes. — A robust but low shrub, 3 to 5 ft. high, with 

 numerous divaricate branches from the base ; bark whitish ; spines two 

 together, recurved, dangerous to travellers ; leaves glaucous-green. In 

 sandy-rocky places along the base of the mountains of Serra de Montes 



