PHANEROGAMS— PROFESSOR BAYLEY BALFOUR. 277 



able localities the branches are more slender and the leaves are larger with 

 longer petioles. 



The young seedling plants, of which our n. 494 is a specimen, have a 

 silvery and scaly stem bearing many small deltoid leaves with crenate margins 

 borne on long petioles. 



The wood of this tree is very hard, and is much used for rack-pins, camel- 

 saddles, &c. 



8. CHROZOPHORA. 



Chrozuphora, Neck. Elein. Bot. ii. 337 ; Bentb. et Hook. Gen. PI. iii. 305. 



A small genus of some six species, badly defined, extending from the 

 Mediterranean region to tropical Asia and Africa. Both Socotran species are 

 widely distributed. 



1. C. tinctoria, Ad. Juss. Tent, Euph. 28 ; Mull. Arg. in DC. Prod, 

 xv. 2, 748 ; Boiss. Flor. Orient, iv. 1140; Sibth. Flor. Grajc. t. 950. 



Socotra. Near Galonsir. B.C.S. n. 644. 



Distrib. South Europe, north Africa, and south-west Asia. 



2. C. Obliqua, Ad. Juss. Tent. Euph. 28 ; Mull. Arg. in DC. Prod. xv. 

 2, 749 ; Boiss. Flor. Orient, iv. 1141 ; Schweinf. PI. Nilot. t. 3. 



C. oblongifolia, Ad. Juss. Tent. Euph. 28 ; T. Anders, in Journ. Linn. Soc. v. (I860), Suppl. 30. 

 Croton oblongifolia, Delile Fl. JSgypt. 139, t. 51, f. 1. 



Socotra. Near Galonsir and Tamarida. B.C.S. n. 13:3. 



Distrib. From north-east Africa through south-west Asia to India. 



Schweinfurth sends specimens of this with very narrow leaves, which he says 

 is characteristic of a type confined to the shores of the Red Sea, and for it he 

 proposes a varietal name, — 



var. frutescens, Schweinf. : foliis angustis. 

 Socotra. Near Tamarida. Schweinf. n. 358. 

 Distrib. Shores of the Red Sea. 



9. CEPHALOCROTON. 



Cejphalocrolon, Hochst. in Flora 1841, 370 ; Benth. et Hook. Gen. PI. iii. 307. 



A genus of limited distribution including three species, two of which are 

 tropical African and the third is Socotran. 



The discovery of this genus in Socotra necessitates an extension of the 

 generic character as given by Bentham and Hooker, so as to include species 

 in which the sepals of the female flower are entire and not " lacero-pinnati- 

 fida," and in which the leaves are feather-veined. 



