FLORA OF ADEN . 
327 
Steamer-Point and town (Marchesetti) ; without locality (Hildebrandt, 
Balfour, Birdw,, Kuntze) ; common (ex Krause). 
Distribution Tehama, coast of N. Somaliland. 
Sectio V .-—Trithymalus. 
9. Euphorbia adenensis Defl. Bull. Soc. Bot. France IX, 67 ; 
Schweinf. Bull. Herb. Boiss. YII, App. II, 329. 
Description : — A shrub, 4 — 5 feet high, glabrous, dichotomously 
branched from the base. Branches terete, thick, woody-fleshy, entirely 
denudate, unarmed, remotely cicatricose; cortex grey-cinereous. Leaves 
deciduous, in terminal fascicles, alternate, sessile, exstipulate, entire, 
obovate-oblong, obtuse, mucronulate, attenuate at the base, 8 — 9 lines 
long, 2 — 3 lines broad, pale-green. 
Involucre terminal, subsessile, campanulate ; lobes 5, orbicular, small, 
fimbriate ; glands 5, patent, transversely ovate, plane, exappendiculate, 
with the margin sometimes subre volute. Flowers dioecious (by abor- 
tion?). Male flowers Qd - capitate in the involucre, pedicellate, bracteolate; 
pedicel 1 J lines long ; bracteoles paleaef orm, palmately laoiniate, 
fimbriate, as long as the pedicels • perianth obsolete ; filaments thick, 3 — 4 
times shorter than the pedicel. Female flower 1, solitary in the centre 
of the involucre, sessile, surrounded by 1 minute, annular, fimbriate 
bracteole. Ovary glabrous ; styles united, dividing at the middle into 
2 circinate lobes. 
Capsule spherical, 3 — 4 lines in diameter, apiculate with the persistent 
styles, finally very shortly stipitate; cocci crustaceous, rot undate on the 
back. Seeds globose, ] line in diameter, smooth, yellow, ecarunculate. 
Flowers and fruits: — December (Schweinf.). 
Locality : — Goldmore Valley, near the Flagstaff, rare (Defl.) ; near 
the top of the S hum Shum Range at about 1,700 feet (Schweinf.); 
without locality (Birdw.). 
Distribution : — Yemen, Hadramaut. 
Note: — As to the systematic position of Euphorbia adenensis Defiers 
says: <e Species insignis in sectione ‘ Trithymalo ^ inter f Pachycladas ; 
ut videtur collocanda, sed ramis denudatis crassis et cymis terminalibus 
ad capitula solitaria reductis.ad sectionem Euphorbium, subsect. Tirucalli 
Benth. et Hook, accedens."” 
3. Phyllautlms Limn 
Herbs, shrubs or trees. Leaves bifarious or distichous, alternate, 
entire, the branchlets with their leaves often resembling pinnate leaves , 
stipules usually narrow or 0. 
