PHANEROGAMS — PROFESSOR BAYLEY BALFOUR. 191 



Boissier's section Pannosi, of the eastern forms, in which are a set of 

 species almost entirely denizens of the dry regions of south-west Asia. With 

 no described form, however, is it conspecific. 



The specimen n. 131, a fragmentary one, is, with doubt, referred to this 

 species. 



3. C. glomeratus, Choisy in DC. Prod. ix. 401 ; T. Anders, in Journ. Linn. 

 Soc. v. (1860), Suppl. 24; Boiss. Flor. Orient, iv. 102; Clarke in Hook. Flor 

 Brit. Ind. iv. 219 ; Wight Ic. t. 1366. 



I. auricoma, Ach. Rich. Tent. Flor. Abyss, ii. 67.? 



Soeotra. Common on the plains and hill slopes. B.C.S. n. 115 

 Schweinf. n. 387. 



Distrib. India, south-west Asia and north-west tropical Africa, a plant 

 varying much, both in size of leaf and in size of head. The larger heads on 

 our specimens are associated with a distinctly twining habit of stem. 



4. O. siculus, Linn. Sp. 223 ; Choisy in DC. Prod. ix. 407 ; Ach. Rich. 

 Tent. Flor. Abyss, ii. 73 ; Boiss. Flor. Orient, iv. 109 ; Sibth. Flor. Graec. t. 

 196 ; Bot. Beg. t. 445. 



Soeotra. Near Galonsir. B.C.S. n. 165. 



Distrib. Canary Islands and Mediterranean region into Syria. 



3. EVOLVULUS. 



Evolvulus, Linn. Gen. n. 385 ; Benth. et Hook. Gen. PL ii. 875. 



A considerable genus, almost entirely American ; but a few species spread 

 into the old world. 



E. alsinoides, Linn. Sp. 392 ; Choisy in DC. Prod. ix. 447 ; Boiss. Flor. 

 Orient, iv. 113; Clarke in Hook. Flor. Brit. Ind. iv. 220. 



E. linifolius, Linn. loc. cit. ; Choisy loc. cit. 449 ; Ach. Rich. Tent. Flor. Abyss, ii. 75 ; Lamk. 



Illustr. ii. 351, t. 216, f. 1. 

 E. fugacissimus, Hochst. in herb. Schimp. Abyss, sect. ii. n. 828 ; Ach. Rich. loc. cit. 

 E. hirsutus, Lamk. Encyc. iii. 538, and Illustr. ii. 351, t. 216, f. 2. 



Soeotra. Common. B.C.S. n. 271. Schweinf. nn. 418 in lit., 496. 

 Distrib. Cosmopolitan in tropical and subtropical regions. 

 Both the extremely hairy and the more glabrous forms of this species occur 

 on the island, as well as the narrow-leaved and broader-leaved types. 



4. POBANA. 



Porana, Burm. Flor. Ind. 51, t. 21* f. 1 ; Benth. et Hook. Gen. PL ii. 876. 



A small genus of seven species of climbing or twining plants distributed in 

 India and the Malay Archipelago. One species is found in Madagascar, and 

 one in Australia. 



