FLORA OF ST. CROIX AND THE VIRGIN ISLANDS. 71 



512. I. tuberosa, L. 



Fl. Feb.-March. In forests, rare. St. Croix (Bugby Hole); St. 

 Thomas (Schl.). 



513. I. dissects, Piirsh (v. Xoyau Vine). 



Fl. Xov.-May. Corolla-tube purple inside. The whole plant lias a 

 taste of prussic acid, and is used for the preparation of a liquor called 

 Xoyau. On fences and along roads, common. All islands. 



514. I. pentaphylla, Jacq. 



Fl. Dec.-March. In thickets and along ditches. St. Croix ; St. 

 Thomas. 



515. I. quinquefolia, Gris. 



Fl. Dec.-Jan. Corolla expanded from 8 A. M. to 3 P. M. In pastures 

 and low thickets, common. St. Thomas. 



516. I. Batatas, Lam. (v. Sweet Potato), a), (3) leucorrhiza, and 7) porphyrorhiza. 

 Fl. all the year round. Propagated by cuttings. A common vege- 

 table. Cultivated and naturalized everywhere. All islands. 



517. I. fastigiata, Swt. a), j 



FL Oct.- Jan. In thickets, not uncommon. St. Thomas. 



518. I. violacea, L. (v. Granni Vine). 



Fl. Dec.-Feb. Coralla expanded towards evening. In forests and 

 along rivulets, not uncommon. All islands. 



519. I. carnea, Jacq. 



St. Croix (Wills Bay sec. West, p. 272). 



520. I. leucantha, Jacq. (Icon. Ear. ii, t.318). 



Fl. March-May. Capsule pilose; roots tuberous. On dry hills, not 

 uncommon St. Jan (near Klein Kanelbay). 



521. I. triloba, L. a) and /3) Eustachiana, Jacq. 



Fl. Sept.-March. Corolla expaoded till 10 A. M. Both forms in moist 

 localities, not uncommon. St. Croix; St. Thomas. 



522. I. umbellata, Mey. 



Fl. Jan.-March. Along rivulets and ditches r common. All islands. 



523. I. pes-caprae, Sw. (v. Bay Vine). 



Fl. all the year round. Corolla sometimes white. On sandy sea- 

 shores, very common. All islands. 



