LIST OF ORDERS ARRANGED ACCORDING TO NUMBER OF SPECIES. 145 



LIST OF ORDERS ARRANGED ACCORDING TO THE NUMBER OF THEIR 



SINAITIC SPECIES. 



Tamariscineae, Dipsaceae, Urticaceae, Salicineae, Colchicaceae, and 

 Filices three each. Eleven orders have but two representatives, while 



nineteen orders have but a single species appearing 

 average is about seven and a half species per order. 



in 



Sinai. The 



In the foregoing list the following genera have no representatives in 

 Europe : 



Cocculus. 



Morettia. 



Eremobium. 



Nasturtiopis. 



Anastatica. 



Hussonia. 



Schimpera. 



Savignya. 



Schouwia. 



Zilla. 



Moerua. 



Ochradenus. 



Oligomeris. 



Caylusea. 



Robbairea. 



Polycarpaea. 



Gymnocarpum. 



Sclerocephalus. 



Cometes. 



Abutilon, 



Seetzenia. 



Moringa. 



Crotalaria. 



Lotononis. 



Indigofera. 



Tephrosia. 



Cassia. 



Acacia. 



Neurada. 



Citrullus. 



Deverra. 



Pycnocycla. 



Zozimia. 



Oldenlandia. 



Anvillaea. 



Francoeuria. 



Iphiona. 



Varthamia. 



Gymnarrhena. 



Brocchia. 



Tripteris. 



Salvadora. 



Solenostoma. 



Calotropis, 



D^mia. 



Leptadenia. 



Boucerosia. 



Arnebia. 



Echiochilon, 



Paracaryum, 



Trichodesma. 



Lindenbergia. 



Blepharis. 



Otostegia. 



Leucas. 



Chenolea. 



Tragonurn. 



Haloxylon. 



^rua. 



Haplophila. 



Halodule. 



Phoenix. 



Hyphaene. 



Elionurus. 



Pappophorum. 



Boissiera. 



.^gopyrum. 



These form a little less than a quarter of the total number of genera 

 in the peninsula, deducting a few from that total of those included in 

 brackets, which are undoubtedly not native. 



19 



