PHANEROGAMS— PKOFESSOE BAYLEY BALFOUR, 21 



2. SILENE. 



Silene, Linn. Gen. n. 567 ; Benth. et Hook. Gen. PI. i. 147. 



A very large genus of herbs, abundant in Europe, the Mediterranean region, 

 and temperate Asia. A few are also found at the Cape and in North America. 



S. apetala, Willd. Sp. ii. 703 ; DC. Prod. i. 369- ; Boiss. Flor. Orient, i 

 596. 



Socotra. Common on the hills at all elevations. B.C.S. n. 352. 

 Schweinf. n. 664. 



Distkib. Canary Islands and circum-Mediterranean region, Persia and 

 Afghanistan. 



3. ARENARIA. 



Arenaria, Linn. Gen. n. 569 ; Benth. et Hook. Gen. PI. i. 149. 



A large genus, chiefly of temperate and alpine regions. 



A. serpyllifolia, Linn. Sp. 606 ; DC. Prod. i. 411 ; Boiss. Flor. Orient, 

 i. 701 ; Oliv. Flor. Trop. Afr. i. 142 ; Edgew. and Hook. fil. in Hook. Flor. 

 Brit. Ind. i. 239 ; Eng. Bot. Syme t. 236. 



Socotra. Abundant in many places. B.C.S. n. 702, 

 Distrib. A common weed. 



4. POLYCARP^EA. 



Polycarpcca, Lamk. in Journ, Hist. Nat. ii. 8, t.'25> ex DC. ; Benth. et Hook. Gen. PI. i. 154. 



A genus of twenty-six species of small herbs, many of them badly defined, 

 spread through the tropical and warmer regions of the old world, one extending 

 into tropical America. Two of the Socotran species are endemic. Another is 

 a wide spread species of both old and new worlds, whilst a fourth is a south-west 

 Asiatic and north-west African form extending to Australia, which, in Socotra, 

 exhibits a distinct varietal character. 



1. P. corymbosa, Lamk. 111. ii. 129 ; DC. Prod. iii. 374 ; Oliv. Flor. Trop. 

 Afr. i. 145 ; Edgew. and Hook. fil. in Hook. Flor. Brit. Ind. i. 245 ; Wight Ic. 

 t. 712. 



Socotra. On the plain near Kadhab. B.C.S. n. 20. 

 Distkib. A very widely spread tropical plant of both old and new worlds. 

 A very small form of this species occurs on Socotra. 



