BRITTON: FLORA OF THE VIRGIN ISLANDS 25 
by Krebs and Knox are correct, there was a greater variety of plants 
in gardens at the middle of the last century than at present. 
In citing synonyms for the names of plants, I have given the 
original in cases where the species was first named in a genus other 
than the one in which it is now included, and I also have indicated 
the names used by previous authors dealing with plants of the islands, 
in so far as I have been able to refer them, but no attempt has been 
made to give complete synonymy. 
I gratefully acknowledge aid from Mr. A. S. Hitchcock in the 
determination of some grasses and from Miss Margaret Slosson and 
Mr. W. R. Maxon for information regarding some ferns. 
SPERMATOPHYTA 
TYPHACEAE 
TYPHA ANGUSTIFOLIA L. [J. domingensis Pers.; T. angustifolia 
domingensis Griseb.] Along rivulets and lagoons, St. Thomas; St. 
Jan; St. Croix. 
PANDANACEAE 
PANDANUS UTILIS Bory. [P. odoratissimus of Eggers.] Planted 
for ornament. 
ZANNICHELLIACEAE 
RUPPIA MARITIMA L. _[R. rostellata of Eggers.] Shallow, brackish 
water, St. Thomas; Buck Island; St. Jan; St. Croix. 
CYMODOCEACEAE 
CYMODOCEA MANATORUM Aschers. Shallow, salt water, St. Croix; 
St. Thomas; St. Jan. 
HALODULE Wricutil Aschers. Shallow, salt water, St. Thomas; 
St. Croix. 
ALISMACEAE 
EcHINopoRUS cCorDIFOLIUS (L.) Griseb. [Alisma cordifolia L.; 
A, rostratum Nutt.; Echinodorus rostratus Engelm.] Wet grounds, 
St. Thomas; St. Croix. 
ELODEACEAE 
HALOPHILA BAILLONIS Aschers. In salt water, St. Thomas. 
HALOPHILA ASCHERSONII Ostenfeld. In salt water, St. Croix. 
. 
HY DROCHARITACEAE 
THALASSIA TESTUDINUM Konig. In salt water, St. Thomas; St. 
Jan; St. Croix. 
