Jennings: Contribution to Botany of Isle of Pines. 115 



Family PHYTOLACCACE.E. 



Key to the Species Herein Enumerated. 



Petioles usually pubescent, leaves usually not more than lo cm. long, mostly 



much shorter; perianth parts 4 258. Rivina hutnilis. 



Petioles glabrous, leaves up to 15 cm. long; perianth parts 5. 



259. Phytolacca icosandra, 



258. Rivina humilis Linnaeus. Bloodberry. 



Rivina humilis LiNN^us, Species Plantarum, I, Ed. I, 1753, p. 121. 



Rivina Icevis Linn^us, Mantissa Plantarum, I, 1767, p. 41. 



Rivina puberula Humboldt, Bonpland, & Kunth, Nova Genera et Species Plan- 

 tarum, II, 1817, p. 184. 



Rivina viridiflora Bello, Anales de la Sociedad Espanola de Historia Natural 

 XII, 1883, p. 105. 



In thicket at west base of Casas Mts., May 5, 1910, 0. E. Jennings, 

 No. 62,7. General Distribution: From Florida and the Bahamas 

 southwards through the American tropics and subtropics. 



259. Phytolacca icosandra Linnaeus. Poke Weed. 



Phytolacca icosandra Linn^us, Species Plantarum, I, 1753, p. 631, and Systema 



Naturae, II, Ed. X, 1759, p. 1040. 

 Phytolacca mexicana Gaertner, De Fructibus et Seminibus Plantarum, I, 1788, 



p. 337. t. 77. f- 8. 

 Phytolacca nova-hispania Millspaugh, Field Columbian Museum, Botanical 



Series, II, 1900, p. 41. 



On soil derived from coral rock, near Caleta Grande, May 22, 1910, 

 0. E. Jennings, Nos. 423 and 483; edges of an old cultivated field at 

 Pedernales Point, February 16, 1899, C. F. Millspaugh, No. 1413, Cf. I. c. 

 General Distribution: Cuba, Isle of Pines, Haiti, Jamaica, St. Thomas, 

 and from Mexico to northern South America. Often a weed. 



Dr. N. L. Britton writes that he regards this species as the same 

 as Phytolacca decandra, the only difference being that of the number 

 of stamens. 



Family AIZOACE^. 



260. Sesuvium portulacastrum Linnaeus. 



Portulaca portulacastrum Linn^us, Species Plantarum, I, Ed. I, 1753, p. 446. 

 Sesuvium portulacastrum Linn^us, Systema Naturae, Ed. X, II, 1759, p. 1058. 

 Trianthema polyandrum Blume, Bijdragen tot de Flora van Nederlandsch Indie, 



1826, p. 1137. 

 Halimus portulacastrum O. Kuntze, Revisio Generum Plantarum, I, 1891, p. 263. 



On the beach at Bibijagua, May 7, 1910, 0. E. Jennings, No. log. 

 General Distribution: Along sea-shores from North Carolina south- 

 wards and generally throughout the tropics. 



