Jennings: Contribution to Botany of Isle of Pines. 231 



Wright's Explorations in Cuba," by Underwood {Bulletin oj the Torrey 

 Botanical Club, XXXII, 1905, pp. 291-300), where a considerable 

 number of Wright's localities are mentioned. 



583. Exogonium argentifolium (A. Richard) House. 



Ipomoea ? argentifolia A. Richard, in Sagra, Historia Fisica, Politica y Natural 



de la Isla de Cuba, XI, 1850, p. 131. 

 Ipomcea pracox Wright, Anales Academia de la Ciencias Medicas, Fisicas y Natur- 



ales de la Habana. 

 Exogonium argentifolium House, Bulletin of the Torrey Botanical Club, XXXV, 



1908, p. 102. 



"Crescit in insula Pinorum (Isla de Pinos)" — A. Richard, /. c; 

 near Nueva Gerona, 1904, A. H. Curtiss, No. 48Q; W. W. Rowlee, 

 No. 182, in 1901 (House, /. c). General Distribution: Cuba, the 

 Isle of Pines, and Mexico. 



584. Ipomoea asarifolia (Desrousseaux) Roemer & Schultes. 



Convolvulus asarifolius Desrousseaux, in Lamarck, Encyclopedie Methodique, 



Botanique, III, 1789, p. 562. 

 Ipomcea asarifolia Roemer & Schultes, Systema Vegetabilium, IV, 1817-20, p. 251. 

 Ipomcea urbica Choisy, in DeCandolle, Prodromus Systematis Naturalis Regni 



Vegetabilis, IX, 1845, p. 349. 

 Ipomoea nympheaefolia Grisebach, Catalogus Plantarum Cubensium, 1866. p. 203. 



Not Blume, 1826. 



Near Nueva Gerona, December 10, 1903, and January 7,. 1904, 

 A. H. Curtiss, No. 21 g; along the river about 3 miles south of Nueva 

 Gerona, May 12, 1910, O. E. Jennings, No. 617. General Distri- 

 bution: Tropical Africa, Asia, the West Indies, and the Gulf Coast of 

 Mexico. 



The slight difference of absence or presence of small glands at 

 the base of the blade is scarcely a sufficient difference between Ipomcea 

 nymph ecefolia and /. asarifolia. 



585. Ipomoea Pes-Caprae (Linnaeus) Roth. 



Convolvulus Pes-Caprce Linn^us, Species Plantarum, 1753. P- i59- 

 Ipomcea biloba Forskaol, Flora yEgyptiaco-Arabica, 1775, p. 44. 

 Ipomoea Pes-Caprce Roth, Novae Plantarum Species Praesertim Indiae Orientalis, 

 1821, p. 109. 



On sandy beach at Bibijagua, May 7, 1910, 0. E. Jennings, No. 73 

 {see Plate V); also same data, No. 646. General Distribution: On 

 sandy beaches throughout the tropics and subtropics of both hemi- 

 spheres. 



