116 KANSAS ACADEMY OF SCIENCE. 



9. Panicum sanguinale, L., Gray's Man. 646. ( Digitaria, Beauv.; Nuttall, Fl. Ark. 

 145.) 



53. Panicum scoparium, Lam., Thurber in Bot. Cal. II, p. 259. (P. pauciflorum 

 of Gray's Man., p. 648, and probably also of Elliott, Nutt. Fl. Ark. 144.) 



22. Panicum virgatum, L., Nutt. Fl. Ark. 144 ; Gray's Man. 647. 



52. Panicum laxiflorum, Lam., Chapm. So. Flor. Suppl., p. 667; (P. dichotomum, L. 

 var. 2, Chapm. So. Flor. 576.) 



16 and 51. Panicum Crus-galli, L. Gray's Man. 649; Nutt. 1. c. 144. Two forms are 

 represented — one nearly awnless, and one with long awns and very rough glumes; (var. 

 hispidum, Gray.) 



63. Setaria glauca, P. B., Gray, 1. c. 650 ; Lesqx. Fl. Ark. 397. 



15. Cenchrus tribuloides, L., Gray, 1. c. 650; Nutt. 1. c. 145. 



14. Spartina cynosuroides, Willd., Gray's Man. 619. 

 2. Tripsacum dactyloides, Linn, f., Nutt. Fl. Ark. 144; Gray's Man. 650. 



19. Leersia Virginica, Willd., Nutt. 1. c. 153 ; Gray, 1. c. 607. 



11. Andropogon provincialis, Lam. Encycl. 1. 376, 1783. (Andropogon furcatus. 

 Muhl. in Willd. sp. 4, 919, 1797; Gram. 281, 1817; Lesqx. Fl. Ark. 398; Gray's Man, 

 652.) In a letter from Prof. E. Hiickel, of St. Poelton, Austria, who is now engaged in 

 preparing a monograph on the Andropogome, he says : " The Andropogon furcatus, Muhl., 

 which grows sparingly in southern France, has an older synonym : A. provincialis, Lam., 

 a fact which seems unknown to American botanists. I am not sure of their being fully 

 identical, but there is certainly no specific difference between them." 



10. Andropogon scoparius, Mx., Lesqx. Fl. Ark. 398; Gray's Man. 652. 



20. Chrysopogon nutans, Benth. ( Sorghum nutans, Gray's Man. 652, Andropogon 

 nutans, L., Andropogon avenaceus, Mx. ; Nutt. Fl. Ark. 152.) 



39. Aristida oligantha, Mx., Nutt. Fl. Ark. 135; Gray's Man. 618. 



58. Aristida fasciculata, Torr. Ann. Lye. N. Y. 2, 154, ( 1826.) (A. Hookeri, Trin.) 

 No. 652 Hall and Harbour; No. 672 Powell; No. 336 Scribner, Montana coll.; 563 

 Fendler. This grass has been referred to A. purpurea, Nutt., but if it really be of that 

 species — which, from seeing the two growing in the field and from the examination of a 

 large number of specimens, I greatly doubt — Torrey's name takes precedence, as it is the 

 earlier. 



29. Aristida purpurea, Nutt. Fl. Ark. 1834, p. 143. This differs but a little from the 

 genuine form of A. purpurea, as represented by No. 563 Lindheimer, and No. 768 E. 

 Hall's Texan coll. It is apparently identical with No. 978 Fendler, (Aristida longiseta, 

 Steud.,) and No. 476 E. Palmer (1877). A. filipendula, Buckl., is a rather larger form, 

 but equally slender — not rigid like A. fasciculata — with a more numerously-flowered 

 panicle and shorter awns. In order to fix more clearly the characters of Nuttall's plant, 

 I will quote his excellent description of the species from the Trans. Am. Philos. Soc, vol. 

 5, (N. S.,) 1837. 



" Panicula erectiuscula gracili ; cal. valvulis remotis arist ulatis apice bifidis ; aristis capillaribus long- 

 issimus; foliis brevibus scabris. Hab.— on the grassy plains of Red river in arid situations; flowering 

 in May. Obs. — perennial; leaves narrow, short and scabrous, ligule pilose; culm about one foot high, 

 panicle many-flowered, a little spreading, branches capillary ; flowers commonly in pairs, (after the 

 manner of the genus,) bluish purple; one valve of the calyx, nearly double the length of the other, 

 both bifid at the summit and shortly awned, the longer valve exceeding the corolla; awns equal, capil- 

 lary nearly three times the length of the corolla and scabrous, corolla minutely stipitate." 



13 and 40. Muehlenbergia glomerata, Trin., Gray's Man. 613. 



49. Muehlenbergia sylvatica, Torr. and Gray, var. gracilis, Scribn. (n. var.) Panicles 

 slender, like those of M. diffusa. It resembles somewhat M. monticola, Buckl., but in 

 that species the empty glumes are much shorter than the floret, while in this they 

 nearly equal it (exclusive of the awn), as in M. sylvatica. (Topeka, E. A. Popenoe.) 



