HITCHCOCK GRASSES OF CUBA. 195 



10. HOLCUS L. Sp. PI. 1047. 1753.a 



1. HolcushalepensisL. Sp. PL 2: 1047. 1753. 



Andropogon halepensis Brot. Fl. Lusit. 1: 89. 1804. 



Sorghum halepense Fers. Syn. 1: 101. 1805. 



flabana, Curtiss 561, Leon 271; Santiago de las Vegas, Baher HC 503, Hitchcock in 

 1906; Guanajay, Palmer d- Riley 664, 815; without data, Wright 3488; Vedado, Leon 

 424. 



Wright's 3488 in the Grisebach Herbarium bears the data, "Cub. or. 1860-64, fields 

 near Matanzas." 



11. SORGHASTRTJM Nash in Britton, Man. 71. 1901. & 



Awn 10 to 15 mm. long 1 . S. francavillanum. 



Awn not over 2 mm. long 2. S. setosum. 



1. Sorghastrum francavillanum. (Fourn.). -^ -y^Jyh(^-C^"'r> 



Andropogon francavillanus Fourn. Mex. PI. 2: 56. 1886. 



Pinar del Rio, Wright 3896; Herradura, Baker HC 2179. 



The Sauvalle specimen has two labels, "Sandy pine woods Oct.," and "Low savan- 

 nas and pinales Sept." The Wright specimen in the National Herbarium has an 1865 

 label. This species has a loose panicle, with slender branches; the spikelets are about 

 5 mm. long, light brown, sparsely pilose on the lower half; the pedicel of the upper 

 spikelet about 4 mm. long, awn 10 to 15 mm. long, once, or more or less twice, genicu- 

 late; blades long and folded or convolute, about 3 mm. wide. I hai^e not seen Four- 

 nier's type of this, but his description applies to the Cuban plant. 



2. Sorghastrum setosum. (Griseb.). 

 Andropogon setosusQriQeh . Cat. PL Cub. 235. 1866. 

 Wright 3897. 



The specimen in Grisebach's herbarium, which is the type, has a blank label 

 of 1865 and bears the secondary number 208. The Sauvalle Herbarium contains 

 a specimen accompanied by a similar label with no. "208" and a second of the same 

 kind, with no. "3897" and also a label with habitat, "Bushy savannas, Hanabana, 

 June 1." This is a duplicate type. Wright's 3897 in the Gray Herbarium is from 

 "Bushy savannas, Hanabana, June 6." 



The inflorescence is comparatively dense; the spikelets smaller than in the pre- 

 ceding, only about 3 to 3.5 mm. long, long-pilose all over; pedicel of the upper 

 spikelet 2 to 3 mm. long; awn none or short and exserted 1 to 2 mm.; blades flat, 

 5 mm. wide, about 15 cm. long. 



12. RHAPHIS Lour. FL Cochinch. 552. 1790. 



1. Rhaphis paucifiora (Chapm.) Nash in Small, Fl. Southeast. U. S. 67. 1903. 



Sorghum paucifiorum Chapm. Bot. Gaz. 3: 20. 1878. 



Sandy pine woods, Pinar del Rio, Wright ?>^%^; Isle of Pines, Taylor AQ. 



This is listed in Sauvalle's Flora Cubana as ^^ Andropogon (Chrysopogon) ivrighiii 

 Munro," but is without description. Under this are mentioned nos. 293 and 283. 



" Holcus sorghum L. must be considered the type of the genus Holcus since it is 

 the most important economic species of the genus and further, since, in the fifth edi- 

 tion of his Genera Plantarum, Linnaeus refers to the genus Sorgum Mich [eli] as a 

 synonym of Holcus. 



& Poranthera Raf. (Ser. Bull. Bot. 1: 221. 1830) has for its type Andropogon nutans 

 L., but the name was previously used for a genus of Euphorbiaceae (Rudge, Trans. 

 Linn. Soc. 10: 302. 1811). The type species of Sorghastrum Nash is Andropogon 

 avenaceum Michx., which is the same as A. nutans L. 



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