Eu2)horhia.'\ cxxii. euphorbiace^ (brown). 597 



Probably Schioeinfurth 816 from Keren belongs here, but I have only seen 

 2 transverse stem-sections, each with 5 angles ; they have the characterishic thick, 

 ceiitial ))art of this species. I also think that E. ahyssinica, var. tetragona, 

 Schweinf. in Bull. Herb. Boiss. vii. App. ii. 319, and Berger, Suklc. Enphorb. 69, 

 maybe a variety of tliis plant. It was collectecl in Eritrea on the High Plateau of 

 Haigett, Schioeinfurth, 1351 of his 1891 (not 1892) collection, but 1 have only seen 

 9 transverse stem-sections, 2 with 3 angles .iiul 7 with 4 angles. Berger states that 

 his v)xr.ErythrcE(£ is at first 3-anglecl, becoming 4-angle(l, but the branch of tlie type 

 which he obligingly comumnicatetl to Kew has o angles and is absolutely identical 

 with Schweinfurtb, 22G. It is one of the plants that have been in cultivation for 

 many yeai-s under the naiiie o\' E. abi/s-sinica. The relatively thick solid central part 

 in proportion to the breadth of the angles of the stem at once distinguishes 

 E. Erythrcece from E. acrurensis and E. disclusa. 



183. E. calycina, N. E. Br. A succulent spiny leafless tree 30 ft. 

 high. Branches l|-3j in. in diam., very slightly constricted at intervals 

 of 5-7 in. or more, -l-angled, with a small central solid part J-| in. in 

 diam., glabrous. Angles much compressed, wing-like, 2-3 times as broad as 

 the central part is thick, with nearly even or but faintly sinuate margins. 

 Leaves scale-like. Spines |-2 lin. long, sometimes obsolete, in pairs ^— J 

 in. apart, subpai-allel or not very divergent, brown, on oblong or sub- 

 orbicular horny brown shields, which are not decurrent nor connected 

 by a horny border along the angles. Flowering-eyes united with or 

 em))raced by the shields. Cymes on peduncles ^-J in. long, bearing a 

 central sessile male involucre and 2 lateral mostly hermaphrodite 

 involucres on short branches 1J-2J lin. long, glabrous. Bracts about 

 2 lin. long, suborbicular, concave, thin. Involucres 3-3J lin. in diam. 

 and IJlin. deep, shallowly and broadly cup-shaped, glabrous, with 5 

 glands and 5 broad transverse fringed lobes ; glands subcontiguous, 

 1J-1| lin. in their greater diam., transverse, reniform, two-lipped, with 

 the ends decurved, and (in the dried specimens seen) undulated on the 

 margins, entire. Ovary or young fruit exserted just beyond the stamens, 

 on a pedicel as long as the involucre, trigonous-globose, glabrous, with 

 a conspicuous calyx at its base cut into G-l) or more linear or filiform 

 segments 1-1 J lin. long; styles 3, about 1-1 J lin. long, shortly united 

 at the base, strongly recurved, rather slender, thickened or minutely 

 2-lobed at the apex. Capsule and seeds not seen. — E. Candelahrinn^ 

 Pax in Engl. Jahrb. xxxiv. 70, not of Trem. 



srile £and. Soudan: Meshra el Kek, by the Ghazal Kiver, Schweinf urth, 

 1259 ! Mittu : near Legbi, Schiveinfurth, 2824a ! 



The very small central portion of the branches at once distinguishes this from 

 E. Candelabrum, Trem. 



184. E. Barteri, iV. E. Br. A candelabrum-like tree, 20 ft. high, 

 leafless, spiny. Branches probably 4-angled ; the only specimen seen 

 consists of a piece 1 ft. long, with 2 angles, constricted into 5 narrowly 

 elliptic joints IJ-SJ in. long and f-lj in. broad, glabrous; angles wing- 

 like, with even (not at all sinuate-toothed) margins. Spines 1-2 lin. long, 

 in pairs \-h in. apart, sometimes with another pair of minute or rudi- 

 mentary spines or points ^-| lin. above theui, diverging, dark brown, on 

 liorny brown orbicular shields. 1-1 h lin. in diam.. becoming grey with age. 



