FLORA OF ADEN. 
233 
Locality : — Ravine south-west of the Tower of Silence (DefL); Shum 
Shum Range at a height of about 1,650 feet (Busse) ; without locality 
(Hook., Birdw.). 
Distribution: — S. Arabia, Socotra, highlands of Somaliland, Abys- 
sinia, Nubia. 
2 . Eaunaea nudicaulis Less. Synops. p. 139; Hook. FI. Brit. Ind. 
Ill, 416. 
Zollikoferia nudicaulis Boiss. FI. Or. Ill, 824 ; Batt. et Trab. 
FI. d'Alg., p. 558. 
Brachyramphus obtusus DC. Prodr. VII, 177. 
Lactuca obtusa C. B. Clarke Comp. Ind. p. 261, (not of Benth. !). 
Microrrhynchus nudicaulis DC. Prodr. VII, 180. 
Microrrhynchus patens DC. 1. c. p. 181. 
Microrrhynchus fallax Jaub. et Spach in Walp. Ann. II, 976. 
Prenanthes patens Wall. Cat. n. 3258. 
Prenanthes procumbens Roxb. FI. Ind. Ill, 405. 
Arabic name -Hendibe (Schweinf.). 
Description : — Glabrous, 6 — 24 inches high, branched. Leaves 2 — 10 
by 1 — 3 inches, mostly radical ; lower leaves ob ovate-oblong, pinnatifkl, 
with rounded or very obtuse segments, spinulose on the margins with white 
cartilaginous teeth ; cauline leaves distant, few, sessile, narrowly 
oblong, pinnatifid. Flowering stems decumbent or spreading, irregularly 
branched. 
Heads ^ — § inch long, cylindric, remotely subracemose along the 
branches, shortly pedicelled, subsolitary or fascicled (sometimes 6 — 10 in 
a cluster), supported by leaves or naked. Involucral bracts all with 
broad white membranous margins ; the outer very short, ovate, acute, with 
a strong midrib, subcordate ; the innermost thrice as long as the outer, 
reaching ^ inch long, linear, subacute, longer than the pappus, the midrib 
thickened in front. Pappus-hairs subequal, soft, white, copious. 
Achenes | inch long, polymorphous ; inner sometimes as if com- 
posed of 4 thick ribs ; outer slightly curved and flattened, with a thick 
ventral and several thick dorsal ribs, all smooth or obscurely uneven. 
Locality : —Gravelly slopes of the Shum Shum Range (Hildebrandt, 
Ellenbeck) ; without locality ( Birdw.) . 
Distribution : — S. Spain, Canaries, N. Africa, Arabia, Sind, Punjab, 
Afghanistan. 
XXVII,— PLUMBAGITVACEiE. 
Herbs or shrubs, often maritime. Radical leaves rosulate, cauline leaves 
alternate. 
