o 



4 



G8 EUPiiOEBiACE^E (Brown). [EiipliorUa. 



flowering -eyes seated midway between the spine-pairs; involucres 

 3 together, all sessile^ or with peduncles not more than ^ lin. long 

 (but possibly ultimately elongating), 2| lin. in diam., cup-shaped, 

 glabrous, with 5 glands and 5 subquadrate denticulate lobes ; glands 

 contiguous, 1-1^- lin. in their greater diam., transverse, subreniform- 

 oblong, entire, rugulose on the upper surface, yellowish ; ovary and 

 capsule not seen, all the involucres being male. Neuberf^ Deufsches 



GarL-Mag. 1893, 291, lolth fig,) K E. Br. in Bool:. Ic. PI xxvi. 

 t. 2531, '2532 ; Pax in Engl Jalirh. xxxiv. 74; Berger, S^Jck. 

 Enplwrh, 52. 



Eastern Region: ZiThilaiul. Stone I Marriott] and cultivated specimens \ 



Deticril>ed from living plant^s cultivated at Kew since 1876. The involucres 

 produced have all been males, but at their base are rvidimentary lateral involucres 

 coutaiiiiug very young female flowers, ^vhich have not developed at Kew. 

 Possibly E. hreiiartkalataj Pax, a native of German East Africa is not distinct 

 from this. 



174. E. Cooperi (K. E. Br. ex Berger, Sukk, Euphorb. 83 and 84, 

 fig, 21); a succulent leafless spiny tree, 10-15 ft. high; trunk 

 becoming naked and cylindric below, 6-8 in. thick ; branches 

 ascending, curved at their basal part, 5-6-angled, deeply constricted 

 into conic-ovate or somewhat heart-shaped segments 2-6 in. long, 

 and l|-3 in. in diam., with the small central solid part not more 

 than |-1 in. thick in the younger branches, glabrous ; angles wing- 

 like, with triangular channels |-1J in. deep between thenij their 

 margins with a continuous horny nearly even grey border ; leaves 

 rudimentary, scale-like, about ^ lin. long and 1 lin. broad, trans- 

 verse^ apiculate; spines li-4 lin, long, in pairs \-^ iu. apart, 

 widely diverging, grey, with blackish tips; flowering -eyes \\-^ hn. 

 above the spine-pairs; cymes 1-3 from the same eye, sessile, each 

 with 3 involucres, glabrous; bracts about 1|- lin. long and 2 lin. 

 broad, rounded, concave, usually minutely denticulate ; involucres 

 all sessile and the middle one male, lateral fertile,' 2J-3 lin. in 

 diam., cup-shaped, glabrous, with 5 glands and 5 erect short trans- 

 versely rectangular fringed lobes; glands contiguous, 1J-1| hn. in 

 their greater diam., narrowly transverse oblong, very minutely 

 rugulose on the upper surface ; capsule about \ in. long and 4|-6 

 lin. in diam., exserted on a stout pedicel, curved to one side, 

 deeply 3-lobed seen from above, with laterally compressed lobes, 

 glabrous, dark purple on the apex and along the angles, having a 

 somewhat fleshy calyx at its base, with 3 deltoid-ovate acute lobes 

 about 1 lin, long ; cell-walls about \ lin. thick, woody ; styles 1 lin. 

 long, united for two-thirds of their length, with spreading armS; 

 bifid at the apex ; seeds IJ lin. in diam., globose, with a raised line 

 in a very slight furrow on one side, and a small pit at one end, 

 light grey. 



Kalahari Rkgion : Transvaal ; Buffelspoort Farm, near Sterkstroom, ii^ 

 Rustenburg District, Burtt-Davy, 5993! Koiuati Poort, Royers, 2504 ! Potgeiters 

 Rust District, JJavhth, 5143 ! 



