PHANEROGAMS — PROFESSOR BAYLEY BALFOUR. 297 



fully figured by Vaillant (in Explor. Sc. de 1' Algerie t. 45). The Socotran 

 plant differs from the Algerian by its longer pedicels, spurred bracts, smaller 

 flowers and fewer seeds. 



Order LXXVII. COMMELINACE^. 



A considerable order of tropical and subtropical regions of the world. One 

 of the Socotran genera has the dispersion of the order, the other is restricted 

 to the old world. 



1. COMMELINA* 



Commelina, Linn. Gen. n. 62 ; Benth. et Hook. Gen. PI. iii. 847. 



A large genus widely dispersed in the warmer regions of the globe. The 

 three Socotran species are distributed through tropical Africa and in southern 

 Asia. 



1. 0. benghalensis, Linn. Sp. 60; 0. B. Clarke in DC. Monog. Phanerog. 

 iii. 159, and Commel. et Cyrt. Beng. t. 4 ; Wight Ic. t. 2065. 



C. procurrens, Schldl. ; Hassk. in Schweinf. Flor. iEthiop. 209. 



Soeotra. In many localities. B.C.S. n. 651. Schweinf. n. 743. 



Distrib. From the Canary Islands through tropical south Africa to India 

 and the eastern Archipelago. 



2. 0. (Heterocarpus) Forskalsei, Vahl Enum. 2, 172 ; Hassk. in Schweinf. 

 Flor. ^Ethiop. 208; C. B. Clarke in DC. Monog. Phanerog. iii. 168. 



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



Soeotra. About Galonsir and Tamarida and other places. B.C.S. n. 35. 

 Schweinf. n. 742. 



Distrib. From Cape de Verde Islands, through tropical Africa and south- 

 west Asia to India. 



3. 0. (Heteropyxis) albescens, Hassk. in Schweinf. Flor. iEthiop. 210; 

 C. B. Clarke in DC. Monog. Phanerog. iii. 184 ; Boiss. Flor. Orient, v. 346. 



C. Schimperiana, Hochst. in herb. Schimp. Abys3. n. 1242. 



0. multicaulis, Hochst. in herb. Schimp. Abyss, (eel. Hohen.), n. 2268. 



Nom. Vern. Gogo (Schweinf.). 



Soeotra. Near Galonsir and Tamarida. B.C.S. n. 134. Schweinf. n. 

 444. 



Distrib. Abyssinia, Arabia, Scinde, and north-west India. 



* To Mr C. B. Clarke I am indebted for the identification of the species in this family. 

 TRANS. ROY. S0C. EDIN. VOL. XXXI. 2 P 



