— 238 — 



grasses, besides the rare Diodia radicans Ch. et Schl. wliich I have 

 found on "Water Island", but which on my last visit I tried in 

 vain to find again. Of other plants I have further included the 

 semi-bush like species Cakile lanceolata (W.) 0. E. Schulz. (= C. 

 cequalis L'Her. in my earlier paper). Euphorbia huxifolia Lam. 

 and Heliotropium curassavicum L. 



On the other hand it seems to me most natural to refer to a 

 special formation, the Tournefortia formation, the main part of 

 the bushes, w^hich I have earlier included in the Coccoloba-Man- 

 chineel formation, as most of them properly have their main 

 occurrence outside the Coccoloba-Ma.nchmee\ formation and only 

 more rarely, sometimes not at all, occur in this. 



Of species referable to this formation may firstly be mentioned 

 TourneforfAa gnaphalodes R. Br., which commonly occurs near the 

 sea on the most exposed localities, where by means of its dense, 

 erect, spatulate, thick, grey-felted leaves it forms almost compact, 

 white-greyish broad growths, reaching to a height of 3 — 4 feet. 

 Next to it may be mentioned Borrichia arborescens D. G. witli 

 yellow flowers and thick, erect, obovate-oblong leaves which most 

 often are smooth, but sometimes silvery-hairy^). It grows gre- 

 gariously often in rather dense, 2 — 3 feet or more high bushes 

 on even rather exposed localities and has rooting branches. This 

 is also the case with Sccevola Plumieri L. of which the snake- 

 like bent branches take root where they come in contact with the 

 sand; in contrast to the otherwise commonly occurring narrow 

 shape of the leaves of the bushes found here, it has broad oval, 

 entire leaves, which are erect, very thick and only have a slightly 

 prominent midrib. 



Moreover we find the large, beautiful, densely-leaved bush 

 Suriana maritima L. of which the thick, narrow, spatulate, dull and 

 hairy leaves are quite erect and placed at the top of the branches, 

 Ernodea littoralis Sw. also with erect smooth and glossy, oblong- 

 elliptic leaves, Bontia daphnoides L. with smooth dark-green 

 lanceolate leaves, Dodoncea viscosa L. with fresh-green obovate- 

 lanceolate leaves, Dcdbergia hecastopkyllum (L.) Taub. with dark-green, 

 leathery, slightly hairy leaves and of which the long somewhat 

 hanging shoots are liable to wind wherever they find proper sup- 

 port, and some few other species. 



M Such specimens I saw in great number on the sandy sea-shore at the 

 west-end of Tortola. 



