INSULAR FLORAS. 31 



On the other hand, there are no essentially northern types 

 extending southward to the Bahamas. The only exception 

 is Distichlis spicata (Gramineae), which has a wide range in 

 North America, and occurs isolated in the island of Inagua. 



Out of sixty-eight species common to the Southern 

 United States and the Bahamas, fifty-eight inhabit Cuba. 

 Hitchcock's table does not show how many of the species 

 are peculiar to the West Indies, but he enumerates 

 thirteen as peculiar to the Bahamas. Specially noteworthy 

 among these is Pinus bakamensis, apparently confined 

 to the islands of New Providence and Andros, accord- 

 ing to Eggers (20), but I have seen no specimens from 

 the latter island. On the authority of Gardiner (18) 

 this pine occurs in the islands of Abaco, Bahama, Berry, 

 New Providence, and the northern half of Andros. It is a 

 very distinct species with leaves a foot long, in clusters of 

 threes. 



A curious feature in the West Indian maritime flora 

 deserves mention here, for both Eggers and Hitchcock 

 refer to it, and I have seen specimens from the Ber- 

 mudas exhibiting the same peculiarity. It is the exist- 

 ence of hairy and glabrous varieties of the same species 

 growing intermixed. Conocarpus erecta (Combretacese), 

 Borrichia arborescens and B. f rut e sec us (Composite) furnish 

 striking examples of this phenomenon. Some individuals 

 have perfectly glabrous leaves, whilst in others the leaves 

 are densely clothed with a silky, silvery tomentum. Oc- 

 casionally the same individual bears both kinds of leaves. 

 Baron Eggers's Bahama collection has not been worked 

 out in detail, as it contained little that was new ; but some 

 interesting facts illustrated by it have been published (21). 

 Mr. Baker there estimates the total number of species 

 known from the whole group of islands at about 500, very 

 few of which are not included in one or the other of the lists 

 referred to above. He also points out the absence of the 

 natural orders : Dilleniacese, Piperacese, Guttiferse, Terns- 

 troemiacese and Gesneracese, which, for most of the orders, is 

 certainly remarkable. It is true that Brace and Gardiner's 

 list includes both Mammea americana and Calophyllum 



