lxii 



BOTANY OF SOCOTRA. 





which is also found in Scindh, another is native of Scindh and Beloochistan, and 

 two inhabit the Cape de Verde Islands. 



There remain £" Q genera which do not quite fall into any of the groups 

 already noted. Of these Farsedd, Reseda, Withania, and Lavandula are genera 

 of the Mediterranean and Orient regions, with varying extensions; and Pulicaria 

 lias also its greatest development in the Mediterranean region. 



Looking now at the non-endemic species of Phanerogams, we find that 

 ninety are common weeds in the tropics or warmer regions of all parts of the 

 world, some of them reaching into temperate regions ; forty-four of them being 

 annuals. The greater number of these are introduced plants in Socotra, some 

 of quite recent date, and cannot be considered as established in the island ; 

 others have now incorporated themselves with the indigenous vegetation. The 

 following is a list of those cosmopolitan tropical plants : — 



List of species of the phanerogamic flora of Socotra cosmopolitan in 

 the tropics, some extending to subtropical and temperate regions ; 

 many are weeds of cultivation, and introduced into socotra. 



Argemone mexicana. Annual. 

 Cleoine viscosa. Annual. 

 Gynandtopsis pentaphylla. Annual. 

 Capparis spinosa. 

 Arenaria serpyllifolia. Annual. 

 Polycnqvea eorymbosa. Annual. 

 Portulacca oleracea. Annual. 

 Sida cordifolia. 



,, rhombifolia. 



„ humilis. Annual. 

 Tribulua terrestris. Annual. 

 Fagonia cretica. Annual. Represented 



by an endemic variety, and also by 



the Arabian variety. 

 Oxalis corniculata. Annual. 

 Dodonsea viscosa. 

 Melilotus parviflorus. Annual. 

 Tephrosia purpurea. 

 Zornia diphylla. Annual. 

 Desmodium trittorum. 

 Teramnus labialis. Annual. 

 Canavalia ensiformis. 

 Vigna luteola. Annual. 

 Rhynchosia minima. 

 ( laasia Sophera. 



,, Torn. Annual. 

 Lythrum hyssopifolium. Annual. 

 Momordiea Charantia, var. abbreviata. 

 Mollugo hirta. Annual. 

 Hydrocotyle asiatica. 

 Oldenlandia eorymbosa. Annual. 

 Ageratum conyzoides. Annual. 



Siegesbeckia orientalis. Annual. 

 Eclipta alba. Annual. 

 Blaiuvillea rhomboidea. Annual. 

 Bidens pilosa. Annual. 

 Sonchus oleraceus. Annual. 

 Anagallisarvensis,w«\cait'ulea. Annual. 

 Ipomcea biloba. 



,, scabra. Annual. 

 Evolvulus alsinoides. 

 Dichondra repeus. 

 Cressa cretica. 

 Solanum nigi'um. Annual. 

 Datura fastuosa, var. alba. Anuual. 

 Herpestes Monnieria. 

 Lippia nodiflora. 

 Avicennia officinalis. 

 Boerhaavia diffusa. 



,, scandens. 



Acbyranthes aspera. 



,, ,, var. sicula 



Cbenopodium murale. Annual. 

 1'olygonum glabrum. 

 Peperomia reflexa. Annual. Repre- 

 sented by a Himalayan and Ceylon 

 form. 

 Fluggea microcarpa. 

 Potamogeton natans. Represented by 



European and west Indian form. 



,, fluitans. 



,, peetinatus. 



Ruppia maritima. 

 Naias major. Annual. 



Cyperus lsevigatus. 



,, amabilis. 



,, aristatus. Annual. 



,, compressus. Annual. 



,, difformis. Annual. 



,, rotundus. 

 Heleocharis Chsetaria. 

 ,, capitata. 



Fimbristylis diphylla. 

 ,, ferruginea. 



,, autumnalis. 



,, glomerata. 



Cladium Mariscus. 

 Paspalum distichum. 

 Panieum sanguinale. Annual. 



,, paspaloides. 



,, colon um. Annual. 

 Oplismenus Burmanni. 



,, compositus. 



Setaria glauca. Annual. 



,, viridis. Annual. 



,, verticillata. Annual. 

 Pennisetum cenchroides. 

 Tragus racemosus. Annual. 

 Imperata arundinacea. 

 Heteropogon hirtus. 

 Cynodou dactylon. 

 Cbloris barbata. 

 Eleusine segyptiacil. Annual. 



,, indica. Annual. 

 Eragrostis pilosa. Annual. 

 ,, eiliaris. Annual. 



A considerable proportion of the non-endemic plants have a wide distribu- 

 tion in the tropics and warmer regions of the old world only, and do not reach 

 America, some of them having an extension into temperate regions. Sixty-two 

 species belong to this category, and they are enumerated in the following list. 

 Some of them are plants which have been certainly introduced ; nearly the 

 whole of them are quite established as part of the flora of the island. Twenty- 

 four of them are annuals. 



