Jennings: Contribution to Botany of Isle of Pines. 97 



wide, and the peduncles bearing but one flower each. These appear 

 to belong to a good variety and, from such descriptions as could be 

 found, it is evidently the same as described by Roemer and Schultes 

 as Hypoxis mexicana. 



Note. — Since writing the above, Dr. N. L. Britton has assured the 

 writer that specimen No. 550 in the New York Botanical Garden is 

 clearly Hypoxis juncea. Dr. Britton doubts the occurrence of more 

 than one species of Hypoxis on the island. 



213. Hypoxis decumbens variety mexicana (Roemer & Schultes) 



comb. nov. 

 Hypoxis mexicana Roemer & Schultes, Systema Vegetabilium, VII, 1835, p. 761. 

 Gravelly soil in open field just south of Sante Fe, May 25, 1910, 

 0. E. Jennings, No. 5^1. 



Family DIOSCOREACE^. 



Key to the Species Enumerated. 



Leaves cordate-ovate to cordate-deltoid, acuminate; staminate racemes long, 

 slender. 



3 fertile and 3 sterile stamens 214. Dioscorea polygonoides. 



All 6 stamens fertile 215. Dioscorea trifida. 



Leaves cordate-hastate with widely rounded basal lobes and the apex suddenly 

 apiculate; staminate flowers distinctly glomerate-subsessile. 



216. Rajania hastala. 



214. Dioscorea polygonoides Humboldt & Bonpland. 



Dioscorea polygonoides Humboldt & Bonpland, in Willdenow, Species Plantarum, 



IV, 1806, p. 795. 

 Dioscorea muUifida Presl, Botanische Bemerkungen, 1844, p. 116; Grisebach, 



Flora of the British West Indian Islands, 1864, p. 588. 

 Dioscorea Kegeliatia Grisebach, Flora of the British West Indian Islands, 1864, 



p. 588. 

 Dioscorea alata Bello, Anales de la Sociedad Espanola de Historia Natural, 



XII, 1883, p. 863. Not Linna;us. 



Near Nueva Gerona, A. H. Ciirtiss, No. 50(5 9, no date. General 

 Distribution: From Cuba through the West Indies to Trinidad and 

 in continental tropical America. 



215. Dioscorea trifida Linnaeus, fil. 

 Dioscorea trifida Linnaeus, fil., Supplementum Plantarum, 1781, p. 427. 



Northern part of the island, Blain, No. q8, Millspaugh. General 

 Distribution: Isle of Pines, Jamaica, Guadeloupe, Martinique, St. 



