946 cxv. EUPHOEBiACE^. [Euphorbia 



little angular, branched from the base; branches decumbent, 

 ascending, crowded, articulated-constricted ; branchlets f to f in. 

 thick at the constrictions ; spines strong, straight, ranging up to 

 f in. long, diverging in pairs arising from elevations along the 

 angles of the branches, the apices of the elevations about ^ in. 

 distant from each other on each angle, the bases broad and 

 confluent; joints IJ to If in. long, the angles few, produced 

 into fleshy compressed wings; wings ttick, semicircular or 

 semi-elliptical, sinuous-dentate on the margin, spreading to a 

 distance of -^ to f in. from the axis of the branchlet ; teeth 3 

 to 5, broad, obtuse, shortly or obsoletely spiny at the apex ; the 

 youngest branchlets very glaucous. 



MossAMEDES. — In sandy hilly maritime places, from the river 

 Giraul to Cabo negro, very plentiful, not uncommonly occupying 

 almost exclusively extensive tracts of country; with few fl. July 1859. 

 The bulk of the specimens collected were lost in the war with the 

 Munanos, and only rudimentary pieces remain. No. 643. 



This belongs to the section Diacanthium, and apparently is related 

 to E. Lemaireana Boiss. and E. antiquorum L. ; it is perhaps the 

 succulent Euphorbia which frequently forms the matrix of Hydmora 

 africana Thunb. (Welw. herb. n. 530) and is -ultimately killed by it. 

 This also is probably the cactus-like EupJiorhia, occurring to the south 

 of the town of Mossamedes in July 1859, which was beset with the 

 rare fungus n. 147, Tulostoma angolense Welw. & Currey in Trans. 

 Linn. Soc. xxvi. p. 290, t. 20, figs. 10 and 11 (1868) ; also the de- 

 cumbent Euphorbia which bore Lichen n. 420, Roccella linearis var. 

 primaria Wain (see Welw. in Journ. Linn. Soc. v. p. 183), together 

 with species of Ramulina (cf. Lichen n. 23) in July 1859 near the town 

 of Mossamedes ; also in the midst of which grew Emilia albocostata, 

 ante p. 596, Welw, herb. no. 3573. It must also be compared with E. 

 triangularis Desfont. Cat. Fl. Hort. Paris., edit. 3, p. 339 (1829), name 

 only, a plant supposed to belong to the Cape Flora. 



14. E. polyacantha Boiss. Cent. Euphorb. p. 25 (1860), and in 

 DC, Z.C., p. 84. 



PuNGO Andongo. — A fleshy, tenacious shrublet, 1 to 1| ft. high ; 

 prostrate-ascending or the stems at first erect, soon becoming decumbent, 

 3- to 6-angled, articulate-moniliform, glaucous-green, leafless, the 

 younger ones 2- to 4-angled ; branches erect-spreading, 4- to 6-angled ; 

 the angles spiny-toothed ; the whole plant abounding in a caustic milk ; 

 flowers yellow. On the gneiss rocks of the Pedras Negras in the 

 prsesidium, chiefly on their very dry slopes, in company with species 

 of Xerophyta (of. X sguarrosa Baker ; Welw. herb. 1555 and Coll. 

 Carp. n. 1006), Commelinaceae, etc., plentiful ; fl. Jan. and Feb. 1857 ; 

 also a young plant near Catete, Feb. 1857. No. 639. 



HuiLLA. — A shrublet, 7 in. high or less, articulately branched from 

 the base, in form resembling an Opwitia ; flowers yellowish. On 

 mica-schist rocks, among bushes, at an elevation of 5000 ft., between 

 LopoUo and Nene, sparingly ; very few specimens in fl. Feb. 1860. 

 No. 640. 



15. E. Candelabrum Welw. in Annies Conselho TJltramarino 

 Lisb. no. 24 (May 1856), p. 251, n. 5. 



E. candelabra Welw. in Proc. Linn. Soc. ii. p. 329 (7 Nov. 

 1854), name only. 



