HLuphorbia. |  CXXII. EUPHORBIACEE (BROWN). 583 
But it is quite possible that when the female involucres of EF. grandicornis are 
developed a peduncle may also develop, and that when better known E, breviarti- 
eulata will prove to be identical with the latter species. 
158. E. Wakefieldii, V. #. Br. A _ succulent leafless spiny 
branching perennial, with stout fibrous roots, glabrous. Branches 
d-angled, 3—} in. in diam. when dried; angles compressed, with deltoid 
acute teeth or lobes }—-} in. apart, without horny margins, bearing at 
their apex a pair of diverging blackish spines 14-2 lin. long, which 
have 2 very minute points at their base. Flowers and fruit not seen. 
Nile Land. British East Africa: Ribe, near Mombasa, Wakefield ! 
159. E. Robecchii, Pax in Ann. [stit. Bot. Roma, vi. 186. A succu- 
lent leafless spiny much-branched shrub (or tree ?). Branches and branch- 
lets in distant groups or somewhat whorled, acutely 3-angled and more 
or less twisted, 4-1 in.indiam.; branchlets very much recurved ; angles 
acute, toothed ; teeth 3-114 in. apart, 14—2 lin. long, broadly deltoid, 
equally sloping upwards and downwards from their apex. Leaves rudi- 
mentary, minute, scale-like. Spines 1-14 lin. long, in pairs, diverging, 
grey, on narrow horny grey shields decurrent down both slopes of the 
teeth, but scarcely beyond. Flowering-eyes about 2 lin. above the 
spines, enclosed in the shields. Involucres (not seen) 3 together, about 
2} lin. in diam:, glabrous, with transversely ovate glands and fringed 
lobes (Pax).—Pax in Engl. Jahrb. xxxiv. 72. 
Wile Land. Somaliland: Ogaden, Robecchi-Bricchetti, 287! 332, 370; by 
the River Milmil, Riva, 1169, ex Pax. 
The above description, with the exception of that of the involucres, is based 
entirely upon Robecchi-Bricchetti, 287 ; the other numbers quoted by Pax I have not 
seen, The number 1061, however, collected by Riva near the River Milmil, also 
quoted by Pax under H. Robecchii, belongs to a perfectly distinct species. The 
specimen seen of 1061 is very fragmenta: y, consisting of a section of an obtusely 
5-angled stem 1} in. in diam. and a longitudinal surface slice from a branch and 
branchlet, which is scarcely or very obtusely angular, not obviously toothed, quite 
spineless, with small shields about iin. long, shaped like the sole of a boot, enclosing 
the flowering-eye and not very horny ; the branchlet also is ascending, not at all 
recurved. From this I suspect that two species have been included by Pax under 
the name Z. Robecchii. 
160. E. Dawei, V.#. Br. “A small tree, usually palm-like 
Owing to loss of lower branches” (Bagshawe), 20-30 ft. high (Dave), 
nearly leafless, spiny. Branchlets succulent, flat and thin in the 
Specimens seen, but stated by Dawe to be also 3-winged, constricted 
into oblong or oblanceolate-oblong segments 4-8 in. long and 14-23 in. 
broad or perhaps larger, very obtuse or slightly notched at the apex, 
with the lateral branches usually narrowed to a short stalk-like base, 
even or sinuate-toothed at the margins, glabrous, apparently glaucous. 
aves rudimentary or very small, recurving between the spines, 13-2 
lin, long, elliptic or suborbicular, with the margins much recurved and 
- © upper side very convex, somewhat rigid, glabrous, soon deciduous. 
Spines 1-2 lin, long, in pairs 4-3 in. apart, diverging, brown, becoming 
blackish-brown and finally grey, on narrow horny shields, which are 
