188 BOTANY OF SOCOTRA. 



1. I. obscura, Ker in Bot. Reg. t. 239 ; Choisy in DC. Prod. ix. 370. 

 Ach. Rich. Tent. Flor. Abyss, ii. 69 ; Franch. Sert. Somal. in Miss. ReVoil 41 ; 

 Clarke in Hook. Flor. Brit. Ind. iv. 207. 



/. ochracea, Don. Syst. iv. 270. 



Convolvulus obscurus, Linn. Sp. 220. 



C. gonatodcs, Steud. in herb. Schimp. Abyss, sect. ii. n. 801. 



C. ochraceus, Liudl. in Bot. Reg. t. 1060. 



For the further extensive synonymy see authors quoted. 



Nom. Vern. Irrham (B.C.S.). 



Socotra. Not uncommon. B.C.S. n. 423. Schweinf. n. 451. 



Distrib. Throughout India and the East, in regions bordering on the 

 Indian Ocean, and in tropical Africa. 



There appears to be no specific difference between the two plants figured 

 in the Bota7iical Register as Ipomcea obscura and Convolvulus ochraceus. The 

 hairiness of the one and the glabrousness of the other is not a persistent 

 character, — we find amongst our Socotra specimens hairy and glabrous forms, — 

 and the only point of difference between them is the colour of the corolla, — 

 white or yellow, — white in /. obscura, and orange-yellow in C. ochraceus. Our 

 Socotran plant has commonly orange flowers, and is therefore the ochracea form, 

 which is perhaps only tropical African. Plants grown at Kew from seeds we 

 sent from Socotra flowered in October 1880. 



2. I. biloba, Forsk. Fl. ^Egypt. Arab. 44 ; Clarke in Hook. Brit. Ind. 

 iv. 212. 



I. maritima, R. Br. Prod. 486 ; Bot. Reg. t. 319. 



I. Pes caprae, Roth Nov. PI. Sp. 1 09 ; Choisy in DC. Prod. ix. 349 ; Franch. Sert. Somal. in 

 Miss. Revoil 41. 



Socotra. Common on the shores. B.C.S. n. 545. Schweinf. n. 786. 

 Distrib. On tropical shores, cosmopolitan. 



3. I. (Quamoclit) laciniata, Balf. fil. in Proc. Roy. Soc. Edin. xii. (1882), 82. 



Annua depressa radiatim ramosa ramis prostratis ; foliis laciniatis pinnatisectis longe petiolatis 

 sparsim pilosis ; rloribus subsessilibus in axillis solitariis ; sepalis exterioribus subtrifidis ; 

 corolla angusta ; ovario rostrato ; seminibus maculosis pubescentibus. 



Herba annua a collo radiatim ramosa, ramis prostratis srcpe longe patentibus 4 poll, longis 

 sparsim pilosis. Folia f-1 poll, longa in ramis elongatis remota sed circum collum dense 

 aggregata laciniatim et profunde pinnatisecta, segmentis linearibus terminali latiori et 

 subcuneatim tridentato acutis ssepe lateraliter sectis fere 1 poll, longis, basi in petiolum 

 canaliculatum plerumque lamina longiorcm attenuata sparsim pilosa subtus scrobiculata. 

 Mores in axillis solitarii brevissime pedicellati v. subsessiles; pedicelli subflore bibracteol- 

 ati ; bracteohi: lineares pilosae floribus breviores. Sqiala imequalia nonaculeata, tria 

 exteriore majora ovata subtrifida lobo medio acuminato lobis lateralibus lanceolatis, parte 

 basali subinembranacea extus pilosa. Corolla angusta tubuloso-cylindrica v. infundibuli- 



