GRASSES OF MICHAUX 's FLOEA BOREALI-AMERICANA. 151 



S.juncea L., for which reason it was changed by Poiret to S. canadensis. 11 Hence this 

 species should be called Stipa canadensis Poir. (Stipa macounii Scribn. in Macoun, 

 Cat. Can. PI. 5: 390. 1890.) The species of Britton's Manual described as Oryzopsis 

 juncea (Michx.) B. S. P. should be called Oryzopsis pungens (Torr.) (Milium 

 pungens Torr. in Spreng. Neue Entdeck. 2: 102. 1821.) 



Erianthus saccharoides Michx. 



There are two sheets of this, both labeled by Michaux, but no locality is given. 

 They belong to the species described in Small's Flora under this name. This species 

 was described by Walter in 1788 as Anthoxanthum giganteum. His specimen is 

 among the few grasses preserved in his herbarium at the British Museum. In both 

 types the panicle is tawny and the awn straight./ The specific name can not be taken 

 up because there is an Erianthus giganleus Muhl.,& based upon Andropogon alope- 

 curoides L. and described in his Descriptio Graminum.c The awn is there stated to be 

 twisted, as in the Linnsean plant. 



Erianthus brevibarbis Michx. 



"In collibus desertis ab amnio Wabash ad Ostium Missouri 5 diebus distantibus." 

 The specimen belongs to the species described in Small's Flora under this name. The 

 range as originally published is "in collibus Tennassee et Carolinae." The known 

 range is from Delaware southward along the coast to Florida, and west to Louisiana. 

 We do not know of its occurrence in southern Illinois, as given on Michaux' s label. 



Holcus odoratus L. 



' ' In pratensibus Canada [sign for perennial] . ' ' The specimen is Savastana odorata 

 (L.) Scribn. 



Andropogon macrourum Michx. 



"A Virginia ad Carolina [sign for perennial]. ' ' The specimen is Andropogon glome- 

 ratus (Walt.) B. S. P. This agrees with Walter's specimen in the British Museum in 

 having roughened spathes, rather loose instead of tightly rolled as in the type speci- 

 men of Andropogon corymbosus (Chapm.) Nash (A. macrourus corymbosus Chapm.; 

 Hack, in DC. Monogr. Phan. 6: 409. 1889. Curtiss, N. A. Plants 3639c). 



Andropogon dissitifiorum Michx. 



"In Carolina Georgia Florida." The specimen is Andropogon virginicus L. 



Andropogon ternarium Michx. 



"In regione Wabash Georgia montosa &c." The specimen is Andropogon argyraeus 

 Schult. which is A. argenteus Ell. , not DC. There is a single rather fragmentary speci- 

 men which is undoubtedly this species. Besides the label quoted above, the sheet 

 bears two others, but the name A. ternarium is questioned upon both. One gives the 

 locality as "Wabash & Illinois," the other as Florida. As the diagnosis on the first of 

 these two labels states that the staminate flower is pediceled, A. furcatus Muhl. may 

 be referred to. However, the published locality is "in montosis Carolinae." Some 

 of the awns of the specimen are somewhat twisted. There appears to be no reason 

 why this name (as A. ternarius) should not betaken up in place of A. argyraeus Schult. 



Andropogon scoparium Michx. 



The label bears the name, but no locality. The published locality is "in aridis 

 sylvarum Carolinae." The specimen belongs to this species as generally understood. 

 The sheet bears another label with "Andropogon avenaceum," which has evidently 

 been misplaced. 



Andropogon avenaceum Michx. 



"In regione Illinoensium [sign for perennial]." The specimen is Sorghastrum 

 nutans (L.) Nash (Andropogon nutans L.), agreeing with the Linmpan specimen in 

 having once-bent awns. 



«Encycl. 7: 452. 1806. & Cat. 4. 1813. c\g2. 1817. 



