52S TRANS. ST. LOUIS ACAD. SCIENCE. 



S. aspeb, (Michx.) Kunth, Gram. i. (ex Enum. i.) 



Sandy soil; common. 

 B. heterolepis, Gray, Man. 1st ed. — Vilfa heterolepis, Gray, in 

 Ann. Lye. N. Y. iii. (read Dec. 1S34). 

 Prairie; abundant. 

 S. ORYPTANDKUS, (Torr.) Gray, Man. 1st. ed. — Agrostis crypian- 

 drus, Torr. in Ann. Lye. X. Y. i. 1S24. 

 Sandy hills; infrequent. 

 Agrostis aer a, L. Spec. 

 Meadows; common. 

 Var. vulgaris, (With.) Thurb. in Watson, Bot. Calif, ii. 1880. 

 — A. vulgaris. With. Eng. Bot. 1776. 

 Moist meadows; common. 

 A. PERENNANS, (Walt.) Tuckerm. Amer. Jour. Sci. xlv. 1843. — 

 Cornucopia;? peren?ians. Walt. Fl. 



A. hyemal, (Walt.) B.S.P. Cat. — Comueopice hy emails, Walt. Fl. 



— Agrostis scabra, Willd. Spec. i. 



Prairie, especially in open or barren spots; common. 



ClNNA ARUNDINACEA, L. Spec. 



Upland woods ; abundant. 

 Calamagrostis Canadensis, (Michx.) Be&uv.—Arundo Canaden- 

 sis, Michx. Fl. — Deyeuxia Canadensis, Hook. Arc. PI. 1862. 

 Sloughs; abundant. 

 Calamovilfa longifolia, (Hook.) Scribn. inHackel, True Grass- 

 es, 1890. — Calamagrostis longifolia. Hook. Fl. ii. — Ammophila lon- 

 gifolia, Benth. 



Dry hills; infrequent. 

 Bouteloua hirsuta, Lag. Elench. v.? 181G (ex Kunth, Enum. i.) 

 Dry hills; infrequent. 



B. curtipendula, (Michx.) Gray, Man. 3d ed. (or earlier?) — Chlo- 



ris curtipendula, Michx. Fl. — B. racemosa. Lag. Varied. Cienc. 

 1805 (ex Kunth, Enum. i.) 

 Prairie ; common. 

 Phragmites vulgaris, (Lam.) B.S.P. Cat. — Arundo vulgaris t 

 Lam. Fl. Franc, iii. 177S. — P. communis, Trin. Fund. 1S20. 

 Ponds; frequent. 

 [vceleria cristata, (L.) Pers. Syn. i.—Aira eristata, L. Spec. 



Prairie; abundant. 

 Eatonia obtusata, (Michx.) Gray, Man. 3d ed. 1857 (or earlier). 



— Aira obtusata, Michx. Fl. 

 Prairie; abundant. 



E. Pennsylvania, (Spreng.) Gray, Man. ed. of 1857 (or earlier?). 



— Aira Pennsyh'anica, Spreng. Act. Petrop. 1S10. 

 Sloughs; abundant. 



It also occurs in upland woods, where it i> low and sl< 



