HITCHCOCK — PLANTS OF AMES, IOWA. 527 



Andropogon provincialis, Lam. Diet, i.— .4. furcatus, Muhl. in 

 Willd. Spec, iv. 

 Prairie; common. 



See Hackel, Androp. p. 443; Watson, Contr. Am. Bot. xvii. p. 139 (Proc. Ainec 

 Acad. xxv. 1S90)- 



A. scoparius, Michx. Fl. 



Prairie; common. 

 Chrysopogon nutans, (L.) Benth. Jour. Linn. Soc. xix. 18S1.— 



Andropogon nutans, L. Spec, (retained in Hackel. Androp.) 

 Prairie; common. 



Phalaris Canadensis, L. Spec. 



Streets of Story City. 

 P. arundinacea, L. Spec. 



Marshes: infrequent. 



Aristida gracilis, Ell. Sk. i. 



Dry hills: infrequent. 



Btipa spartea, Trin. Stipaa, 1842. 



Prairie; abundant. 

 Oryzopsis mkeaxocarpa, Muhl. Gram. 



Dry rocky woods ; not uncommon. 

 MUHLENRERGIA SOROLIFERA, (Muhl.) Trin. Diss, i. — Agrostis 

 sobolifera. Muhl. Gram. 

 Dry hills ; infrequent. 

 M. racbmosa, (Michx.) B. S. P. Cat.— Agrostis racemosa. Michx. 

 Fl. — M. glomerata. Trin. Diss. i. 



Dry clay bluffs or wet grassy places ; frequent. 

 M. sylvatica, (Torr.) Torr. & Gray, in Gray. Gram.& Cyp. i. 1834. 

 — Agrostis sylvatica. Torr. Fl. U. S. 

 Upland woods; frequent. 

 M. TENUIFLORA, (Willd.) B. S. P. Cb,\,.— Agrostis tenuiflora, Willd. 

 Spec. i. — M. IVilldenovii. Trin. Diss. i. 

 Upland woods: not uncommon. 

 M. diffusa, Schreb. Gram. ii. 1772-1779. 



Open lowland woDds ; abundant. 

 Brachyelytrum erectum, (Schreb. ) Beauv. — Muhlenberg la 

 erecta, Schreb. Gram. ii. 1772- 1779. — B. aristatum. Beauv. Agrost. 

 1812. — B. aristosam, (Michx.) 13. S. P. Cat'. — Dilefiyrum aristosum, 

 Michx. Fl. 



Rich woods: frequent. 

 Ours is the form, var. Engehnanni, Gray, Man. 5t.l1 cd. 



Phleum pratense, L. Spec. 



Meadows and pastures; common. 

 Sporobolus vagimeflorus, (Torr.) Vasey, Desc. Cat. 1885. Vilfa 

 vaginczflora. Torr. in Gray. Gram. & Cyp. i. 1S3U 



Sandv and sterile soil. 



