BRITTON: FLORA OF THE VIRGIN ISLANDS 117 
—— The Algal Vegetation of the a in the Danish West Indies. Biol. 
Arbejd. tilegn. Eug. Warming. 41-45. gs. I-9. I9QII 
—— Two Crustaceous Brown Algae les the Danish West dee Nuova Notar- 
isia 23: 123-129. Figs. 1-3. 1912 
—— The Species of Sargassum Found along the Coasts of the Danish West Indies, 
with Remarks upon the Floating Forms of the Sargasso Sea. I-20. Figs. 
1914. [No. 32 of a Mindeskrift for Japetus Steenstrup. | 
Cleve, Peter Theodor. Diatoms from the West Indian Archipelago. [Virgin Islands 
d St. Bartholomew.] Bih. Svens. Vet. Akad. Handl. 58: 1-22 pl. 1-5. 
rete 
Dickie, George. Marine Algae Collected at St. Thomas during the Expedition of 
H. M. S. “Challenger.” Jour. Linn. Soc. Bot. 14: 312-313. 17 O 1874. 
List. 
Millspaugh, C. F. Flora of the Island of St. Croix. Field Col. Mus. Bot. 1: 441- 
46. 1902. On pp. 467, 468 isa list of 17 species of marine algae; deter- 
mined by Professor W. G. Furlow 
Vahl, M. Endeel Kryptogamiske Plaster fra St. Croix. Skrivt. Naturh. Selsk. : 
5°: 29-47. 1802. 
ENDEMIC SPECIES 
The approximate number of species native to the islands as re- 
corded, excluding fungi and algae, is 1,052, as follows: 
SHETINMLODEY UR S560 riers 890 
SteVIGO@RYtR oka. oe a AI 
IVORNGIG 3 ee es es 46 
RAMONES Fy oe Ea ee eas ee 75 
T,052 
The numbers of Spermatophyta and Pteridophyta are not likely 
to be increased by further exploration, but there are probably some 
more Bryophyta and many more lichens to be obtained. As we know 
the flora at the present time, the following 27 species are endemic, at 
least to the Virgin Island group as a whole. 
Valota Eggersit (Hack.) oo & Chase 
Agave Eggersiana Trelea 
Peperomia myrtifoliia (Vahl) A. Dietr. 
Pilea Richardi Urban 
Coccolobis Klotzchiana Meissn. 
Zanthoxylum thomasianum Krug & Urban 
Malpighia infestissima (Juss.) Rich. 
Maytenus cymosa Krug & Urban 
Reynosia Guama Urban 
Sida Eggersit E. G. Baker 
Psidium amplexicaule Pers. 
Calyptranthes thomasiana Berg. 
