150 XXXVIII. CELASTRACE^. \_Salacia 



calyx-segments unequal ; fruit baccate, pear-shaped, as large as a 

 goose's Q§g, edible ; seeds numerous, in three rows, horizontal, nearly 

 as large as almonds, triquetrous-angular ; testa very hard. In M^ooded 

 thickets along streams near Cazella, within the lines of fortification, 

 rather rare ; fl. April 1857, fr. Dec. 1856. No. 1339. A climbing 

 shrub ; fruit resembling that of " Matute." Coll. Carp. 332. 



3. S. cerasifera Welw. ex Oliv. Fl. Trop. Afr. i. p. 376. 



PuNGO Andongo. — A handsome robust shrub, climbing far and 

 widely ; leaves rigidly coriaceous, shining ; flowers yellow-greenish ; 

 fruits as large as a cherry or a little larger, bright orange-red. In 

 wooded parts of Barranco de Pedra Songue, within the lines of the 

 fortifications, rather rare ; fl. Dec. 1856, fr. May 1857. No. 1340. 



The following apparently belongs to the same species : — 

 PuNGO Andongo. — A shrub 8 ft. high with long slender branches, 

 or perhaps the upgrowth of a mutilated tree. In the wooded parts of 

 Barranco da Pedra Songue, sparingly ; with white-yellowish flower- 

 buds, end of April 1857. No. 466. 



4. S. erecta Walp. Hep. i. p. 402(1842); Oliv. Fl.Trop. Afr.i. 377. 



Ambaca. — An evergreen much-branched shrub, 5 to 7 ft. high ; 

 branches sometimes sarmentose ; leaves opposite, coriaceous, rather 

 rigid, deep-green ; fruit drupaceous, globose, tricostate. In bushy 

 places along streams between Camilungo and Cabinda, and more 

 abundantly between Cabinda and Isanga ; with unripe fr. Oct. 1856. 

 No. 1344. 



XXXIX. RHAMNEiE. 



Two species of Zizyphus grow in the open w^oods of the moun- 

 tainous region, and one of them in the plateau region of Angola 

 proper ; both occur also in the district of Huilla, and they furnish 

 edible fruits, more or less palatable. The most remarkable 

 vegetable of this family is an herbaceous climber, with the habit 

 of an Aristolochia ; it was reported by Welwitsch as constituting 

 a new genus, but has been identified with the Cape plant, Ilelinus 

 ovatus E. Mey. (Welw. Apont. p. 563, n. 151). 



1. ZIZYPHUS Tourn. ; Benth. & Hook. f. Gen. PI. i. p. 375. 



1. Z. Jujuba Lam. Encycl. Meth. iii. p. 318 (1789) (Ziziphus) ; 

 Hemsley in Oliv. II. Trop. Afr. i. p. 379. 



Z. insularis Chr. Sm. in Tuck. Congo, p. 250 (1818). Z. ortha- 

 cantha DC. Prodr. ii. p. 21 (1825); Schmidt Beitr. Fl. Cap. Verd. 

 Ins. p. 302 (1852). 



Cazengo. — A low tree with a broad head. Cazengo at the base of 

 Muxaulo ; fr. June 1855. No. 6730. 



Golungo Alto. — A tree of 12 to 20 ft. ; branches and crown lax. 

 Abundant in open mixed woods between Sange and Trombeta ; fl. 

 Nov. 1855. No. 4608. 



PuNGO Andongo. — A tree of 20 to 25 ft., but much shorter in 

 secondary thickets. Sporadic, in mixed woods and thickets along the 

 river Luxillo ; in flower-bud Jan. 1857. No. 4609. 



Bumbo. — A tree of 15 ft., with broad lax crown ; branches with 

 hooked spines ; flowers white -yellowish. At the base of Serra da 



