Jennings: Contribution to Botany of Isle of Pines. 287 



Near Caleta Grande, on coralline-limestone soil, May 22, 1910, 

 0. E. Jennings, No. 4gy. General Distribution: From the Bermudas, 

 Florida, and Mexico, south through tropical America. 



749. Tridax procumbens Linnaeus. 

 Tridax procumbens LiNNiEUS, Species Plantarum, II, Ed. I, p. 900. 



Creeping on sand at the upper edge of the strand north of Nueva 

 Gerona, May 14, 1910, 0. E. Jennings, No. 252. General Distribu- 

 tion: From Florida and Mexico south through the West Indies and 

 tropical continental America to northern South America. 



750. Flaveria linearis Lagasca. 



Flaveria linearis Lagasca, Genera et Species Plantarum Quae aut Novae Sunt aut 

 Nondum Recta Cognoscuntur, 1816, p. 33. 



Flaveria mariiima Humboldt, Bonpland, & Kunth, Nova Genera et Species 

 Plantarum, IV, 1820, p. 285. 



Selloa 7iudata Nuttall, American Journal of Science, V, 1822, p. 300. 



Flaveria tenuifolia Nuttall, Journal of the Academy of Natural Sciences, Phila- 

 delphia, VII, 1834, p. 81. 



Gymnosperma nudatiim DeCandolle, Prodromus Systematis Naturalis Regni 

 Vegetabilis, V, 1836, p. 312. 



On coralline strand, Caleta Grande, "South Coast," May 22, 1910, 

 0. E. Jennings, No. oj. General Distribution; Florida, the Bahamas, 

 Cuba, the Isle of Pines, and Yucatan. 



751. Helenium scaposum Britton. 



Helenium scaposum Britton, Studies of West Indian Plants, VIII, Bulletin of 

 the Torrey Botanical Club, XLIII, 1916, p. 469. 



In white sand of the pine-barrens, Los Indios, May 19, 1910, 

 0. E. Jennings, No. 42g; type from near Siguanea, Britton & Wilson, 

 14346, spring, 1916. General Distribution: In the white sand of the 

 pine-barrens in the west-central part of the Isle of Pines. 



752. Pectis elongata Humboldt, Bonpland, & Kunth. 



Pedis elongata Humboldt, Bonpland, & Kunth, Nova Genera et Species Plant- 

 arum, IV, 1820, p. 262, t. 392. 



Pectis floribunda A. Richard, in Sagra, Historia Fisica, Politica y Natural de la 

 Isla de Cuba, XI, 1850, p. 36. 



Pectis ciliaris A. Richard, I. c, not Linnaeus. 



Pectis Plumieri Grisebach, Flora of the British West Indian Islands, 1861, p. 378, 

 excluding synonym Plumier. 



Pectis tenella Hitchcock, Report Missouri Botanical Garden, IV, 1893, p. loi, 

 not DeCandolle. 



