84 FIELD COLUMBIAN MUSEUM BOTANY, VOL. 2. 



Porto Rico (195), fields, south shore of Culebras Island (595, 6oo) r 

 grassy upper beach south of Port of Ponce (669), and Guanica (698), 

 Porto Rico, old weedy fields Bodden Bay Road, Grand Cayman (1323), 

 damp meadow at the Caleta, Cozumel (1516), and dry sandy fields 

 near Progreso, Yucatan (1691). These plants are all narrow and 

 strongly petiolate leaved, leaves 4.3-7.5 x 1-1.5 cm., otherwise they 

 agree with the following: Dry hillsides near Charlotte Amalia, St. 

 Thomas (434), old fields opposite San Domingo city (780), a very 

 shrubby branching form; rich soils near Port Antonio, Jamaica (922), 

 and old pastures near San Miguel, Cozumel (1495), in these the leaves 

 are sub-sessile, larger and broader, lanceolate, 10-13x2.7-3.3 cm.; the 

 plant is here called Xanal Kak, " Same as Fire," in allusion to the 

 intense flaming-orange flowers. 



ASCLEPIAS NIVEA Linn. Sp. PI. 215. 



Fields opposite San Domingo city (834), flowers greenish-white, 

 whole plant puberulous, petioles 1.3-1.5 cm., leaves narrowly-lanceo- 

 late pointed 6 x 1.5 cm. Not in fruit. 



CALOTROPIS PROCERA (Willd.) Dryand, Ait. Hort. Kew. ed. ii., 2:78. 



Plentifully scattered over the mountain fields south of Charlotte 

 Amalia, St. Thomas (390). Leaves 17-20 x 14-16 cm., sub-sessile, the 

 auricles clasping the stem, pointleted, milky juice very profuse. Runs 

 wild also on the south shore fields of Culebras Island, doubtless 

 brought there from St. Thomas (635), where it is called "Silk Cat- 

 tun ;" prolific and plentiful in fields along the coast of Porto Rico 

 west of Ponce (666). 



This species is a native of Persia. The stem yields a good fiber, 

 and the sap a caoutchouc that forms gutta-percha notable as being a 

 good conductor of electricity. The bark bast also yields a fine white 

 fiber. 



METASTELMA SCHLECHTENDALII Decne. de C. Prod. 8:513. 



Plentiful, climbing over shrubbery at southwest point Cayman 

 Brae (1197). 



GONOLOBUS MARITIMUS R. Br. Mem. Wern. Soc. 1:35. 



Ibatia muricata Griseb. Fruits only, from roadsides near Guan- 

 ica, Porto Rico (741). 



CONVOLVULACE.E. 



DICHONDRA REPENS Forst. Char. Gen. 39. 



Dry hillsides in open woods near Hamilton, Bermuda (121). Not 

 in flower nor fruit. 



QUAMOCLIT COCCINEA (Linn.) Moen. Meth. 453. 



Ipomcea Linn. Climbing over shrubs, out of season and rarely 

 seen. Santurce, Porto Rico (300), at the Caleta, Cozumel Island 

 (1522), barely in flower. 



Ipomcea Antillana nom. nov. 



Ip. cymosa Lindl. Bot. Reg. (1843) :24, non G. F. W. Mey. Prim. 

 Fl. Esseq. 99 (1818); nee Roem. and Schult. Syst. 4:241 (1819); Ip. 



