244 
FLORA OF ADEN . 
(Lunt) ; without locality (Edgew r ., Boycott, Thomson, Birdw.). Little 
Aden (PefL). 
Distribution ; — Yemen, Abyssinia, Eritrea, Nubia, Upper Egypt. 
2 . Calotropis R. Br, 
Erect shrubs or small trees with opposite, broad, subsessile leaves. 
Flowers in umbellate or subracemose lateral pedunculate cymes. Calyx 
of 5 distinct sepals, glandular inside, broadly ovate ; corolla campanulate 
or subrotate, divided more than half-way down ,* lobes broad, valvate 
corona of 5 fleshy, laterally compressed lobes, adnate to and standing 
out as wide buttresses from the staminal column with an upcurved 
and involute spur at the base and bifid at, or with 2 auricles a little 
below, the apex. Anthers short and broad, with membranous appendages 
indexed over the depressed pentagonal summit of the style-apex ; pollen- 
masses solitary in each anther-cell, pendulous, attached to the pollen- 
carriers by short caudicles. 
Follicles short, thick, not echinate. Seeds comose, flat, ovate. 
Species 4. 
Distribution Africa, India, S. China, Malay Archipelago. 
1. Calotropis procera (Forslv.) B. Br. in Herb. Kew. ed. 2, p. 78 ; 
Dene, in DC. Prodr. VIII, 585 ; A. Rich. Tent. FL Abyss. II, 88 ; 
Vatke in Linnsea XV, 213 ; Ham. in Trans. Linn. Soc. XIV, 246 ; 
Boiss. FI. Or. IV, 57 ; Hook. FI. Brit. Ind. IV, 18 ; Batt. et Trab. FL 
d’Alg. p. 585. 
Calotropis Wallichii Wight. Contr. p. 54. 
Calotropis Hamiltonii Wight. Contr. p. 53. 
Calotropis heterophylla Wall. Wight Contr. p. 54. 
Calotropis procera Willd. Sp. PL I, 1 268 ; Del. Frag. FL Arab. Petr, 
p. 13. 
Asclepias gigantea L. ex synon. Prosp. Alpini. 
Apocynum syriacum Clus. Hist. 2, p. 87. 
Apocynum patula Auch. exsicc. n. 1500, Kotschy exsicc. n. 939. 
Asclepias gigantea Forsk. FL Aeg.-Arab, p. CVIII. 
Arabic name : Ushar. — Persian name : Khark. 
Description /—An erect shrub, usually 6 — 8 feet high (in arid places 
sometimes higher); young parts with white cottony tomentum ; bark 
soft, corky, spongy. Leaves subsessile, usually 2J — 6 by If — 3f inches, 
broadly ovate, ovate-oblong, elliptic or obovate, w T ith a short, abrupt 
acumination. 
Flowers in umbellate cymes; peduncles 1 — 3 inches long, lateral ; 
pedicels f inch long ; buds globose. Calyx divided to the base ; sepals -L by 
