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FLOBA OF ADEN. 
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obovate-oblong), obtuse or rounded at the apex, cuneate at the base, f — 2f 
inches long, 2 — 5 lines broad, rigidly coriaceous, glabrous, 3 — 5-nerved, 
nerves indistinct or hidden ; petiole \ — 1 line long. 
Umbels solitary, 4 — 6-flowered ; peduncle 1 — 3 lines long ; pedicels 
2 — 4 lines long ; bract elliptic-cupular, or ovate-cupular, dorsal margin § 
line long, lateral f- line, ventral f — § line long, more rarely saucer-shaped 
with a small dorsal lobe, conspicuously umbonate, umbo obtuse or 
horned. Receptacle campanulate or urceolate, If — If lines long. Calyx 
patulous, J — | line long. Petals fire-red, If inches long, reflexed above 
the middle, with 4 — 8 (usually 5) pairs of oblique folds arising from the 
adnate part of the filament. Filaments inserted 4—5 lines above the 
base of the petals, 6 — 10 lines long ; anthers linear, slightly tapering 
downwards, 4 — 5 lines long. Style broadened into the stigma in the 
uppermost If — If lines ; stigma depressed-capitate, §— f line in diameter. 
Flowers and fruits : — In Yemen in January (Schweinf.) ; in Eritrea 
in February and May. 
Locality .- — Shaikh (Pthman on Acacia spirocarpa in great quantities 
(Schweinf., Defh, Yeirbury). 
Distribution : — German East Africa, Nubia, Eritrea, Somaliland, 
Arabia. 
In Yemen the plant grows on Acacia and Zizyphus. 
XLTI.— EIJPHORBIACEE. 
Trees, shrubs, or herbs, often with milky juice. Leaves alternate 
or opposite, rarely divided or compound ; stipules usually small, caducous 
or persistent, rarely connate in a bud-protecting sheath ; glands some- 
times at the apex of the petiole or at the base of the leaf-blade. 
Flowers usually small or minute, always 1 -sexual ; inflorescence 
various, usually compound, sometimes (Euphorbia) of single naked 
1-staminate florets in a perianth-like involucre surrounding a solitary 
pistil, more commonly the main inflorescence centripetal, axillary 
or racemose, the subdivisions cymose, sometimes wholly cymose 
in terminal dichotomous panicles, or reduced to simple clusters or solitary 
florets. Perianth often small, sometimes obsolete, often dissimilar in the 
two sexes, usually simple, calycine with valvate or imbricate segments, 
sometimes calycine and 2-seriate imbricate, with segments all similar or 
occasionally dissimilar, rarely double, the inner then of 4—5 small scale- 
like, or very rarely conspicuous petals. Male flowers : Torus sometimes 
forming an intrastaminal disk or with disk- glands or-lobes alternate with 
the stamens of the outer series. Stamens various, sometimes solitary or 
fewer than, sometimes as many as the sepals or petals, sometimes 
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