202 



CONTRIBUTIONS FIIOM THE NATIONAL EEBBABIUM. 



24. Chaetochloa vulpiseta (Lam.) Hitchc. & Chase. 



Panicum vulpisetum Lam. Encycl. 4: 735 (err. typ. 745). 1798. "Ce beau panic 

 croit a Saint-Domingue, ou il a 6t6 recueilli par le citoyen Dutrone. (V. s. in herb. 

 D. Desfontaines.)" The type, in the Desfontaines Herbarium at Florence, is labeled 

 " Panicum vulpisetum Lam. Dirt." A second label bears the note "Bosc. Am. Sepl 

 The type is said to have been collected in Santo Domingo by Dutrone. Then- i-, 

 consequently, some uncertainty as to the origin of the specimen, but the label firs! 

 quoted above is similar in form to those generally accompanying Lamarck's types; 

 the other is in a different hand. «5 



Setaria compositn H. B. K. Nov. Gen. & Sp. 1 : 111. 1816. " Crescit regione calidis- 

 sima prope Cumana et Bordones, in Nova Andalusia," (Venezuela). The type has 



not been examined but the de- 

 scription, especially that of the 

 panicle as nearly a foot long, 

 the apex nodding, and tie- 

 branches spreading, applies 

 perfectly to Jahn 462 from 

 Venezuela, as well as to the 

 other specimens of C. vulpiseta 

 from northern South America. 

 The statement that the ape- 

 ries is related to Panicum italir 

 cum strengthens this identifi- 

 cation, for the large thick pani- 

 cle and broad blades might 

 easily suggest the cultivated 

 millet. The description does 

 not apply to the species of the 

 southwestern states and Mex- 

 ic< i which has been going under 

 the name of C. compositn. 

 Neither is that species known 

 from south of Mexico. 



Setaria vulpiseta Roem. A 

 Schult, Syst. Veg. 2:495. 1817. 

 Based on Panicum vulpisetum 

 Lam. 



Setaria polystachya Schrad.; 

 Schult. Mant. 2: 277. L824. 

 'in Brasilia. Sereniss. Princeps Maximil. Neowidensis." The type has not ben i 

 examined, but the detailed description can apply only to this one of the known 

 species of Brazil. 



Panicum compositum Nees, Agrost. Bras. 244. 1829. Not Panicum compositum L. 

 1753. Based on Setaria composita H. B. K. 



Panicum macrourum Trin. Mem. Acad. St. Petersb. VI. 3-: 227. 1834. "V. spp. 

 Bras." The type, in the Trinius Herbarium at the Academy of Sciences, Petrograd, 

 was collected in Brazil by Sellow. This specimen is labeled also Panicum macro- 

 stachyum. Trinius indicated by his synonymy that he was applying the name 

 macrourum to what had been called macrostachyum. A second specimen (Bahia, 

 Riedel 183) bears Trinius's label "Panicum macrourum m.", but no synonymy is 

 given. 



Setaria alopecurus "hort. Gor."; Trin. Mem. Acad. St. Petersb. VI. Sci. Nat. 

 1: 227. 1834, as synonym of Panicum macrourum. The type, in the Trinius Herba- 

 rium, is from the garden at Gorenki. 



Ftg. 59. — Chaetochloa vulpiseta. From Stevenson 3024, Porto Rico. 



