Euphorbia.] cxxii. euphorbiace^ (brown). 601 



nofc jointed to the stem, terete, marked with small alternate leaf-scars. 

 Leaves not seen, doubtless rudimentary. Flowers and fruit not seen. 

 — E. I'irucalli. Hiern in Cat. Afr. Pi. Welw. i. 949, partly, not of 

 Linn. 



Iiower Guinea. Angola: Mossamedes ; on tlie red-sand rocl<s close to the 

 Kio df Sill at tin; l)a<u of the Sena do Moiites Negros, in Iroiit, of Boca de Kio Bero, 

 IFelrntsrh, 033 ! 



The dwarf habit and absence of constrictions or indication of articulation at the 

 junction ot tlie branches witli tlie >tHni at once distinguish tliis from E. rhip- 

 saluides, Welw., with which Hiern united it. 



192. E. Cactus, Schioeinf. in Bull, Herb, Boiss. vii. App. ii. 321, 

 jxirtii/ {? of Eh7'euh. ex Boiss. in DC. Frodr. xv. ii. 82). Stems numerous, 

 branching from the base or densely tufted, 4^-6 ft. high [Courbon) or 

 up to 10 ft. high (7'erracciano), succulent, sometimes as thick »s the 

 arm, 3-4- (rarely 5-) angled [Courbon), subcylindric at the base, then 

 4-angled and only becoming 3-angled at the apex (Terrace iano), with 

 the faces slightly concave or slightly convex and always continuous 

 (i.e., probably not interrupted at th*^ constrictions of the branch) and 

 the angles irregularly sinuate or lobed. Spines longer than those of 

 E. canariensis, yellowish or blackish-red, becoming whitish with age 

 (Courbon). — Tcrracciano in Ann. Istit. Bot. Roma, v. 98 ; Pax in Engl. 

 Jahrb. xxxiv. 76, partly. E. virosa, Courbon in Ann. Sc. Nat. 4me 

 ser. xviii. 148, not of Willdenow. 



mile Z.and. Eritrea: Abd-el Kadcr Peninstdii, Schweinfurth cf Riva, 2291 

 Mkullo, near Massowa. SchiveinfuHh, 1762. Dessi Island, in Anntshy Bny, Courbon. 

 Midir Island, in Hamfila Bay, Terracciano. 



Of this i>lant I have only seen a flowerless scrap of Schweinfurth ^ Bira's 229, 

 qniti' insufficient lor either description or comparison with tin? Arab-an JE". Cactu.t, 

 Khi-enli., witit which it has bten identified. The identification nmy be corvert, but 

 until y;ood Howering specimens of both the Arabian and African plants are procured 

 and compared (for adl 1 hiive seen are very scrappy) and their identity confirmed, 

 the determination of tlie plant lioni Eritrea must reu)ain doubtful, since many of 

 these sncculent species are very similar in general appearance, but quite distinct in 

 floral structure, especially as to the calyx, ovary, and styles of the female flower. 



193. E. conformis, N. E. Br. Apparently a dwarf succulent 

 leafless and spineless plant. Stems or branches repeatedly forked, 

 terete, jointed, glabrous, glaucous, rigid and fragile; branchlets widely 

 diverging. Flowers unknown. — E. viniinalis, Hiern in Cat. Afr. Pi. 

 Welw. i. 944, not of Burn), f. 



Xiower Guinea. Angola: Mossamedes; on the inner slopes of the Serra de 

 Montes Negros, rare, Welwitsch, 631 ! 



194. E. Fleckii, Pax in Bull. Herb. Boiss. vi. 738. A leafless 

 bush, dichotomously branched. Branches up to 2| lin. thick, terete, 

 fleshy, jointed. Involucres at the apex of the branches, about 2 J lin. 

 in diam., glabrous, with transversely ovate (oblong or elliptic?) glands. 

 Bracts scale- like, ovate, acute. 



X>ower Guinea. German South-west Africa : near the River Kuisib, hanging 

 like cords from the rocks, Fler/c, 4i8A, 459a, 466a. 



