FLORA OF ADEN. 
325 
Arthrothamnos Schimperi Schweinf. in Herb. Nub. n. 924. 
Arabic name : — Rummid. 
Description .* — A shrub, generally aphyllous, fleshy, pale-green. 
Branches erect, patulous, terete, fleshy, trichotomous. Leaves rarely 
present, deciduous, 1 — 3 at the end of the branchlets, minute, 3—5 lines 
long, 2 lines broad, herbaceous, glabrous, ovate, acute, entire. 
Peduncles 4—5, at the end of the branches, short, 3 lines long, terete, 
thick-fleshy, 4-flowered. Involucre green, campanulate ; teeth obtuse, 
fimbriate, shorter than the glands ; glands 5, yellow, concave. Flowers 
short-pedicelled, umbellate, bibracteate ; bracts ovate, acute, truncate at 
the base, sub herbaceous, entire. Stamens 20, some of them exserted ; 
anthers yellow. Ovary stipitate, glabrous; styles united below the 
middle ; stigmas thickened, bifid. 
Locality : — Plain of Maala, Koosaf Valley (Defl.) ; Shum Shum 
Range at about 850 feet (Busse, Ellenbeck ex Krause) ; without locality 
(Hook., Thomson, Anders.). — Forms densely branched bushes of 3 — 5 
feet in height. 
Distribution Nubia, Abyssinia, C. and S. Arabia, Persia, Socotra, 
coast of Somaliland. 
Note :—There are three specimens from Aden in the Herb. Kew 
labelled f Euphorbia Schimperi Presl./ which evidently do not belong to 
this species. One was collected by Balfour in Jan. 1880, the second by 
Schweinfurth in March 1881, and the third by the same botanist in 
Dec. 1888. 
Mr. N. E. Brown of the Royal Botanic Gardens, Kew, informed me 
that the specimens do not belong to any of the tropical African species ; 
but the materials are not sufficient to describe a new species. 
Sectio III.—Lyciopsis . 
7. Euphorbia cuneata Vahl. Symb. II, 53 ; DC. Prodr. XV, 97 ; 
Anders. Journ. Linn. Soc. V, Suppl. p. 35. 
Euphorbia fruticosa Edgew. Journ. Asiat. Soc. Beng. XVI, 1219. 
Description : — An arborescent shrub, 6 — 10 feet high, glabrous. Stem 
woody ; cortex cinereous-glabrous ; branches rectangular, spinescent, 
few-leafed, puberulous when young. Leaves in fascicles on tubercles, 
2 — 8 lines long, 1 — 3 lines broad, cuneate-oblong, cuneate-ovate or linear, 
obtuse at the apex or obscurely bilobed, attenuate at the base, sessile, 
sometimes petiolate, puberulous on both sides. 
Peduncles arising from the leaf-bearing tubercles, fleshy, terete, 
puberulous, 3 — 4-bracteate, 4-flowered ; involucre green, campanulate, 
tomentose, with 5 cuneiform fimbriate teeth ; glands 5, yellow, 
concavepeltate, glabrous. Flowers umbellate, 1 central and sessile, 3 
