98 FLORA OF ST. CROIX AND THE VIRGIN ISLANDS. 



012. Halophila Baillouii, Ascliera. (in Neumayer, 1. c. p. 307). 



IJbizoine creepin;^, thin. Leaves oval, denticulate, wliorled or oppo- 

 site, S'" long-, li'" broad. Monoecious. 



Fl. ^ : 3 membranaceous white bracts ; 1-3 stamens ; filament ?/" 

 long; anther cylindrical, yellowish, glabrous, 1 -celled. Pollen- 

 grains fusiform, 

 n. $ : 3 persistent bracts, as in c? . Ovary sessile, ovate, I'" long, 

 -loculate. Style bifid, 2^"' long ; branches pointed, often of 

 unequal length. Capsule oval, glabrous, 2'" long ; seeds about 

 20, globose, hard, tessellate on the surface. Starch-grains trian- 

 gular. 

 Male flowers very rare compared to the number of female ones. 

 Fl. all the year round. Gregarious on the bottom of the seaon coarse 

 coral sand in a depth of from two to four fathoms, here and there. — St. 

 Thomas (harbour). 



813. Ruppia rostellata, Koch. 



Fl. all the year round. Gregarious in shallow rivulets, not uncom- 

 mon. — St. Croix (King's Hill Gut, in company with a species of Chara) ; 

 St. Thomas (Tutu Gut, Krebs in Hb. Havn.). 



[Anotber Potamea, possessing a creeping rhizome and delicate linear 

 leaves, has been, found by me in the harbour of St. Thomas at a depth of 

 from 3 to 6 fathoms, but on account of only sterile specimens having been 

 obtained it remains as yet undetermined.] 



814. Anthurium Huegelii, Scliott (v. Boyer) (A. acaule, Sch.). 



Fl. July-March. Young radical leaves very different from the older 

 ones, being lanceolate and long-petioled. I consider Schott's A. acaule 

 not to be specifically distinct from this species. On rocks and trees, not 

 uncommon, often gregarious. — All islands. 



815. A. macrophyUum, Sch. 



Fl. July- Dec. Among rocks in forests, uncommon. St. Jan (near 

 Bethania). 



81G. A. cordifolium, Kth. (v. Wild T.anier, Maroon Jancole) (Bot. Mag. t. 2801, 5801 

 being a misprint in Gris. Fl. p. 508). 



Fl. July-Kov. Among rocks in forests, gregarious, here and there. — 

 St. Croix (Wills Bay, Blue Mountain) ; St. Jan (Macumbi, 1200'). 



817. Dieffenbachia Seguine, Sch. (v. Dumb Cane). 



Fl. ]\iay-Dec. In moist places on hifh hills, uncommon. — St. Thomas 



(Caret Bay, 1000'). 



