88 FIELD COLUMBIAN MUSEUM BOTANY, VOL. 2. 



Hedgerows near Walsingham, Bermuda (102); and climbing over 

 shrubbery in fields near the center of Grand Cayman (1381). 



PHARBITIS TRILOBA Miq. Am. Mus. Bot. Lugd. Bot. 2:93. 



Convolvulus hederaceus Linn, as to Dill. Elth. t. 81, F. 93. (Ph. 

 hederacea Chois. referred to Pharbitis Nil.) Roadside at Hamil- 

 ton, Bermuda (139). This species is readily distinguishable from the 

 next by its large flowers (corolla 7 cm. long, limb 4.5 cm. broad), 

 attenuate erect calyx .lobes 2.5 cm. long, and short but distinct ped- 

 icels. 



JACQUEMONTIA PENTANTHA (Jacq. ) Don. Gen. Syst. 4:283. 



Convohnilus pentanthus Jacq. J. violacea (Vahl.) Choisy. Exten- 

 sively climbing over herbage and low shrubs. Charlotte Amalia, St. 

 Thomas (403); south shores of Culebras Island (610), bay shores at 

 Guanica, Porto Rico (701); roadsides near San Domingo city (850, 

 855); old garden shrubbery near San Miguel, Cozumel (1542), where 

 it is called X-yaax h-ebil, "Green-climber;" and in the scrubland 

 south of Progreso, Yucatan (1663). 



Convolvulus obcordatus sp. nov. 



Prostrate trailing, stems long terete glabrous, branches virgate 

 appressed long-pilose, leaves small mostly 1.2 x 8 cm., a few 2 x 1.5 

 cm. obcordate the lobes mostly unequal, the sinister lobe the smaller, 

 glabrous; petiole filiform about two-thirds the length of the lamina. 

 Inflorescence solitary in the axils of all the leaves, peduncle about 

 the length of the leaf and its petiole, bibracteate at or below the 

 middle, bracts minute linear. Flowers small (7 mm.), white, slightly 

 tinged with blue, calyx of three sizes of sepals, the two outer largest, 

 inner smallest and the fifth mediate between the pairs, the outer 

 ovate blunt above, half the length of the corolla, style 2-lipped at the 

 apex. Capsule globose 2-valved 4-seeded, seeds glabrous, 2.2 x 1.6 

 mm., finely reticulate-tuberculate. 



In general habit similar to Evolvulus nummularius L. Along the 

 bed of the railroad about 8 kilometers south of Progreso, Yucatan 

 (1707), only one station found. Type in Herb. Field Col. Mus. Cat. 

 No. 61707. 



CONVOLVULUS JAMAICENSIS Jacq. Obs. 3:6. 



* Southwest point of Cayman Brae (1198, 1205), and the scrubland 



south of Progreso, Yucatan (1726). 



CUSCUTA AMERICANA Linn. Sp. PI. 124. 



Moist ditches, running over various low and tall weeds near Char- 

 lotte Amalia, St. Thomas (407, 495); and over weeds on the margin 

 of an old clearing at Pedernales Point, Isle of Pines (1439). 



BORRAGINACE.E. 



CORDIA CYLINDRISTACHYA R. & S. Syst. 4:459. 



Bay shores near Guanica (750, 767), in which location the species 

 is supplanted by C. globosa in Cuba. 



