CHAPTER XXVII 



THE MALAYAN ERA OF THE NON-ENDEMIC GENERA OF 

 FLOWERING PLANTS (continued) 



THE AGE OF LOCAL DISPERSAL 



Synopsis of the Chapter. 



HAWAII. (i) The Hawaiian residual genera, being those not found in 

 either the Fijian or the Tahitian regions. The genera especially 

 discussed are Osmanthus, Sicyos, Jacquemontia, Cuscuta, Rumex, 

 Dracaena, Naias, Potamogeton ; and amongst others mentioned are 

 Perrottetia and Embelia. 



(2) The Hawaiian genera found in Tahiti and not in Fiji. Very few, 

 and illustrated by Byronia, Reynoldsia or Trevesia, Phyllostegia, and 

 Pseudomorus, though it is likely that most of these will be sub- 

 sequently discovered in Fiji. 



(3) The Hawaiian genera found in Fiji and not in Tahiti. Illustrated 

 by Eurya, Gouania, Maba, Sideroxylon, Antidesma, Pleiosmilax, 

 Ruppia. 



(4) The absentees from Hawaii. Illustrated amongst the orders by the 

 Sterculiaceae (see text), the Meliaceae, the Rhizophoreas, the Melastoma- 

 ceae, and the Coniferae, and amongst the genera by Trichospermum 

 Loranthus, Stylocoryne, Ophiorrhiza, Alstonia, Hoya, Ficus ; and a 

 great many others might be cited. 



TAHITI. (i) The Tahitian residual genera. Only six in number Crataeva, 

 Buettneria, Berrya, Coriaria, Bidens, Lepinia. 



(2) The Tahitian genera found in Hawaii and not in Fiji. See above 

 under (2). 



(3) The Tahitian genera found in Fiji and not in Hawaii, (a) Those 

 possessing only species confined to the Tahitian region or to East 

 Polynesia, of which Meryta, Ophiorrhiza, Alstonia, and Loranthus 

 are examples. 



(b) Those possessing widely-ranging species besides, often, species con- 

 fined to the Tahitian region, such as Grewia, Nelitris, Melastoma, Randia 

 Geniostoma, Tabernaemontana, Fagraea, Bischoffia, Macaranga, and 

 Ficus. The widely-ranging species is in many genera polymorphous. 



