580 CXXII, EUPHORBIACE& (BROWN), [ Luphorbia. 
curved at the base; branchlets probably 3—4-angled, with a rather 
small central solid part (split down the middle in the specimen seen), 
divided by deep constrictions into many elliptic or orbicular segments 
1-1} in. long and 14-1} in. broad, glabrous ; angles wing-like, somewhat 
sinuate-toothed and with a dark brown continuous horny border along 
the margins. Leaves rudimentary, scale-like, soon deciduous. Spines 
4-2 in. long, rather stout, in pairs 4-7 lin. apart, diverging, dark brown. 
Flowering eyes situated exactly midway between the spine-pairs. Flowers 
and fruit unknown.—Z. Dekindtii, Pax in Eng), Jahrb. xxxiv. 73, 375. 
Lower Guinea. Angola: Mossamedes; frequent on sandy maritime hills from 
Giraul to Cabo Negro, Welwitsch, 643. Huilla, Dekindt, 1030. 
This is ailied to E, opuntioides, Welw., but evidently has more angles and the 
spines are much stouter and longer. In HZ. opuntioides the flowering eyes are 
14-2 lin. above the spine pairs, not midway between them, but below that pvint. I 
have not seen a specimen of E. Dekindtii, Pax, which is referred by him to this 
species, but from the description it would seem to belong here. 
153. E. infausta, V.#. Br. A succulent leafless spiny bush about 
5 ft. high, glabrous in all parts. Branches 5-12 in. long, $-1 in. thick, 
4-5- (rarely 6-) angled, with or without slight constrictions ; angles 
slightly compressed, usually even or but slightly tuberculate, with a con- 
tinuous horny dark grey border less than 1 lin. broad, bearing pais of 
spines 14-3 lin. apart; spines subequal or unequal, 1-34 lin. long, dark 
grey or blackish. Cymes solitary in the axils of the spine-pairs, sessile, 
subsessile or very shortly pedunculate, with 3 involucres, 2 on very short 
branches. Bracts $ lin. long, elliptic or suborbicular. Tnvolucres sessile, 
1}-14 lin. in diam., cup-shaped, with 5 glands and 5 transverse or broadly 
cuneate fringed lobes ; glands 3~3 lin. in their greater diam., tr ansversely 
oblong, entire. Ovary globose-trigonous, on a distinct pedicel nearly or 
quite as long as the ovary, glabrous; styles 3-1 lin. long, united at the 
base only and the united part exserted from the involucre, arms recurved- 
spreading, with 2 small thickened lobesat the apex. Capsule 1} Jin. 
diam., with its base just exserted from the involucre. Seeds i jin. 
long, ellipsoid, with the inner face obscurely angular, marked w in 
brown median line, minutely scrobiculate-tuberculate, greyish-white— 
E. polyacantha; Penzig in Atti Congr. Bot. Genova, 1892, 359 ; Schwein 
in Bull. Herb. Boiss. vii. App. ii. 323; Pax in Engl. Jahrb. XXXIV. 70, 
and Berger, Sukk. Euphorb. 62, partly, not of Boiss. 2. Zhi, Pax 30 
Engl. Jahrb. xxxiv. 77, partly, not of Schweinf. 
Wile Land. Eritrea: near Acrur, 6000 ft., Schweinfurth, 1008! 1694! near 
Geleb, 5500-6000 ft., Schweinfurth, 1094! 1233! 1248! 1438! ; 
This has hitherto been associated with E. polyacantha, Boiss., and B. Th, 
Schweinf., but it distinctly differs from both in its ovary being as broud 1s ne 
seated on a pedicel as long as itself, and the shorterstyles are united at the base ony, 
not to half-way up as in those species. 
154. EB. fraterna, V. £. Br. A succulent spiny leafless perennia! 
3-6 in. high. Branches arising from and articulated to a ger ‘is 
stem, at first erect, soon spreading or decumbent at the base wit 
terminal part curved upwards, in the specimens seen 4-6 10. long; 
