204 



CONTRIBUTIONS FROM THE NATIONAL HERBARIUM. 



Colombia: Santa Mar ta, Smil h 501. Without locality, Lehmarm . 



Venezuela: El Limun, Ja.hu 462. 



Dutch Guiana: Paramaribo, Samuels in 10] G. 



Brazil: Tijuca, Ball in 1882. Rio de Janeiro, Graham; Wilkes Expl. Expd. ; O.rumb.i . 



Malmc 3077; Anderson in 1851. Bahia, Lqfgren 3737. Goyaz, Gardner 3518. 



Campinas, Campos Novaes 1211. Espirito Santo, Capanema 5390. Tubarao, Ule 



1367. Without locality, Burchell L629; #o^. GW. /("io /an. 135, 993; Capanema 



5405. 

 Paraguay: Central Paraguay, Morong 546, 658, 673. Pi Icomayo River, Morong 1 574 ; 



fiojas 84, 459. 

 Peru: Santa Ana, Cook & Gilbert 1548. 

 Argentina: Misiones, Ehnan 668. 



25. Chaetochloa macrostachya (H. B. K.) Siribn. & Merr. 



Setaria macrostachya H. B. K. Nov. Gen. & Sp. 1: 110. 1816*. ''Crescit in planitie 

 montana Mexicana inter Salamanca et Zelaya [State of Guanajuato]." Panicum 



setositm is cited as a synonym. The type 

 has not been examined, but from the 

 highlands of central Mexico there is no 

 species other than the one described 

 below that corresponds to the original 

 description of Setaria macrostachya. 



Panicum macrostachyum Xees, Agrost. 

 Bras. 245. 1829. Based on Setaria macro- 

 stachya H. B. K. Nees x based his con- 

 cept of Setaria macrostachya on a specimen 

 from Humboldt in the Willdenow Her- 

 barium from ''America merid. " which 

 is Chaetochloa vulpiseta. Nees's descrip- 

 tion applies to this species. Doell 2 

 follows Nees in this concept. 



Panicum onurus Willd. ; Nees. Agrost. 

 Bras. 251. 1829. This is mentioned as a 

 synonym under Panicum caudatum var. 

 /3, "culmo ramoso, racemis angustioribus 

 depauperatis (P. Onurus, Willd. Herb. — 

 ex Humboldtianis)." In the paragraph 

 on distribution Nees says, "/3 in regno 

 Mexicano (ab Humb. — Vidi in Herb. 

 Willd.)." The type specimen, no. 18813 

 in Willdenow Herbarium, was kindly 

 sent to me for examination by Dr. Urban. 

 The specimen is in an unsatisfactory condition, as the Danicles are immature. The 

 foliage resembles that of Chaetochloa setosa, a West Indian species, to which the speci- 

 men was previously referred. 3 On reconsideration, this specimen is referred to 

 C. macrostachya, a Mexican species. It is not Setaria onurus as described by Grisebach 

 (see under Chaetochloa tenax, page 177). 



Chamaeraphis setosa var. macrostachya Kuntze, Rev. Gen. PI. 2: 769. 1891. Based 

 on Setaria macrostachya H. B. K. 



Chaetochloa gibbosa Scribn. & Merr. U. S. Dept. Agr. Div. Agrost. Bull. 21: 24. 1900. 

 "Type specimen in Gray Herbarium, Cambridge, No. 528 (828?) 'Herbarium Ber- 



1 Agrost. Bras. 245. 1829. 



2 In Mart. Fl. Bras. 2 2 : 166. 1877. 



3 Contr. U. S. Nat. Herb. 18: 349. 1917. 



ihi. 6-j. — ChaetocMoa macrostachya. From Hitchcock 

 5808, Mexico; typical form. 



