APPENDIX 551 



lutea, Pongamia glabra, Sophora tomentosa, Caesalpinia Bonducella, 

 Acacia laurifolia, Barringtonia speciosa, Terminalia Katappa, Gyrocarpus 

 Jacquini, Pemphis acidula, Morinda citrifolia, Guettarda speciosa, Wedelia 

 biflora, Scsevola Kcenigii, Cordia subcordata, Tournefortia argentea, Ipomea 

 pes capra, Cassytha filiformis, Hemandia peltata, Pandanus odoratissi- 

 mus, &c. 



(b) Mangrove-formation. — Carapa obovata, Rhizophora mucronata, 

 Rhizophora mangle, Bruguiera Rheedii, Lumnitzera coccinea, Scirpoden- 

 ■dron costatum, &c. (See below.) 



(c) Intermediate or Transition-formation. — Hibiscus tiliaceus, Heritiera 

 littoralis, Smythea pacifica, Derris uliginosa, Entada scandens, Barringtonia 

 racemosa, Cerbera Odollam, Clerodendron inerme, Vitex trifolia, Excascaria 

 Agallocha, &c. 



N.B. — It is not possible to draw a definite line between the plants 

 of the mangrove swamp and those of the tracts around. Several of 

 the plants placed in the intermediate formation, such as Heritiera littoralis, 

 Entada scandens, Excsecaria Agallocha, &c., are just as much at home 

 amongst the mangroves. In the same way it is often difficult to distinguish 

 between the Beach and the Intermediate formations, and plants like 

 Cerbera Odollam, Hibiscus tiliaceus, and Vitex trifolia belong equally to 

 both. 



NOTE 25 (page 47) 



The Strand-flora of the Tahitian Region 



Drake del Castillo's Flore de la Polynisie frangaise deals mainly with 

 the Society or Tahitian Islands, but also with the Marquesas, Paumotus, 

 Gambler Islands, and Wallis Island. The last-named, however, lies in 

 Western Polynesia, and is not dealt with in this connection. There is no 

 reason to believe, judging from the general character of the islands and from 

 Cheeseman's memoir on the Rarotongan flora, that the strand-plants of the 

 islands of the Cook and Austral Groups, which also belong to this region, 

 differ materially from those of the Tahitian islands proper. Rarotonga, 

 however, possesses Entada scandens, not recorded as a growing plant from 

 any other part of East Polynesia, excepting perhaps Mangaia in the same 

 group. 



NOTE 26 (page 48) 



The Fijian Shore-plants not found in Tahiti 



Although most of these plants, such as Barringtonia racemosa, Clero- 

 dendron inerme, Entada scandens, Excaecaria Agallocha, Heritiera littoralis, 

 Smythea pacifica, &c., have fruits that float for months, and could have 

 reached Tahiti as readily as some of the beach-plants that have success- 

 fully established themselves, there are a few like Dalbergia monosperma 



