New or Noteworthy Spermatophytes from Mexico, 

 Central America, and the West Indies. 



By J. M. GREENMAN. 



The diagnoses and notes here presented are the results of critical 

 study in the determination of several recent collections of plants 

 from Mexico, Central America and the West Indies, particularly 

 those of Mr. Edward A. Goldman, Professor Cassiano Conzatti, Dr. 

 George F. Gaumer, Professors C. R. Barnes, G. J. Chamberlain and 

 W. J. G. Land, Dr. Charles F. Millspaugh, Dr. J. N. Rose and assist- 

 ants, Sr. Dr. Fernando Altamirano, Professor W. A. Kellerman, 

 the late Dr. -G. M. Emrick, Mr. H. A. Van Hermann, and several 

 others including the writer. The material of certain groups, especially 

 in the genus Senecio collected by Mr. C. G. Pringle, has been gener- 

 ously submitted to me for identification by Professor B. L. Robinson. 

 The new species here proposed in this genus are preliminary to a 

 forthcoming monograph of the North American Senecios. 



CYPERUS OCHRACEUS Vahl, Enum. ii. 325 (1805). 



Specimens agreeing well with the original description and with 

 West Indian representatives of this species were collected at 

 Laguna, near the City of Vera Cruz, Mexico, 22 January, 1906, 

 J. M. Greenman, no. 30 (hb. Field Mus.). -This species seems 

 not to have been noted by Hemsley in the Biologia Centrali- 

 Americana. 



Hechtia macrophylla Greenman, sp. nov. 



Leaves about i m. in length, 3.5 cm. broad just above the base, 

 gradually tapering to the apex, glabrous above, lepidote-cinere- 

 ous beneath; margins spinose; spines 3 cm. or less apart, up- 

 wardly curved, 6 mm. or less in length, usually bearing a tuft of 

 persistent white floccose tomentum in the axils: inflorescence 

 paniculate, about 4 dm. long, 1.5 to 2 dm. broad, lepidote- 

 tomentulose; ultimate branches 2 to 12 cm. long, spicate, more 

 or less loosely but evenly flowered throughout their entire length ; 

 floral bracts ovate, acute, 4 mm. long: staminate flowers sessile, 

 about 5 mm. long in anthesis, spreading or reflexed; sepals 



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