86 Field Columbian Museum Botany, Vol. 2. 



suburbs of San Domingo (852); over shrubbery at San Juan Hill, San- 

 tiago de Cuba (1056); and in the center of Cozumel, where it is called 

 by the Indians "H-ebil," meaning "Climber" (in the masculine 

 gender). 



Ipomcea mollicoma Miq. Stirp. Surin. Sel. 132. 



Convolvulus umbellatus Linn, non Ip. umbellata Linn. Ip. umbel- 

 lata Mey. Convolvulus sagittifer H. B. K. Over stone fences and 

 shrubbery at Caguas (200), Catano (254), Bayamon (326), and Guan- 

 ica (719, 745, 746), Porto Rico; south shore Culebras Island (618), 

 and Bodden Bay road, Grand Cayman (1322). Leaves cordate-lan- 

 ceolate 5-7 x 2.5-4 cm., pilose on the larger veins beneath. 



Ipomcea Pes-caprjE (L.) Roth. Nov. PI. Sp. 109. 



Convolvulus P. Linn. Ip. biloba Forsk. A very common seaside 

 species throughout our range though rarely found in flower at this 

 season. On sand beaches it is usually the first vegetation to be found 

 beyond the littoral margin, and where the beach is steep-to and low 

 its habitat on the coral rocks is the same. Islands in Hamilton har- 

 bor, Bermuda, all the beaches about San Juan and its harbor, Porto 

 Rico (260), where it trails seaward from the upper beach over the 

 clear sand to the water line. Shore of Charlotte Amalia, St. Thomas 

 (425), rocky coast of San Domingo (805, 865), shore of Santiago Bay 

 near Morro (1091), south shores of Cayman Brae (1228) and Grand 

 Cayman; east shore of Cozumel, and the beach at Progreso, Yuca- 

 tan (1651). 



Ipomcea quinquefolia (Linn.) Griseb. Mem. Am. Acad. 1863:526. 



Convolvulus q. Linn. Climbing over low shrubbery environs of 

 Charlotte Amalia, St. Thomas (374), and San Domingo (862). Ped- 

 icels divaricate 1-1.5 cm., peduncles filiform 4 cm. long; corolla 2x1 

 cm., central leaflet 3-3.5 cm. x 4-8 mm. 



Ipomcea ruber (Vahl.) comb. nor. 



Convolvulus ruber Vahl. Eclog. Am. 2:12. C. setifer Spr. Syst. 

 I: 577> C. breviflorus Spr. Syst. 1:606, Ip. setifera Poir. Encyc. 6:17, 

 Ip. breviflora Mey. Esseq. 100. Climbing high over tall shrubs at 

 Catano, Porto Rico (146, 147, 158). Over stone fences outskirts of 

 Port Antonio, Jamaica (946). Our specimens agree perfectly with 

 the description, to which might be added from them: sepals 2 of the 

 exterior 5-plaited, the other 3-plaited; oblong-acuminate 2.3 x 1 cm. 

 aristate (aristae 1 cm. long), the keels of the plaits irregularly 

 rounded-dentate; the 2 interior scaphoid cordate-deltoid aristate, 

 1.2 x .7 cm. aristae 2 mm. long. Leaves sagittate-hastate 8 cm. from 

 petiole to apex, 10 cm. from apex to tip of auricle, 8 cm. from tip to 

 tip of auricle-base, 2.9 cm. broad at constricted part above the auri- 

 cles, 3.2 cm. broadest part (upper third) auricle-pointed, tip emar- 

 ginate-mucronulate, petiole about the length of the leaf. 



Ipomoea Steudeli nom. nov. 



Ipoma'a aretiaria Stend. Nom. ed. 2, 1:815, non R. & S. Syst. 

 4:247. Exogonium arenarium Choisy. South shores of Culebras 



