HITCHCOCK — PLANTS OF AMES, IOWA. 527 



Andropociox I'RoviNCiAi.is, Laiii. Diet. i. — A. furcatus, Muhl. in 

 Willd. Spec. iv. 

 Prairie; common. 



See Hackel, Androp. p. 443 ; Watsmi, Confr. Am. Bot. xvii. p. 139 (Proc. Anier. 

 Acad. XXV. 1S90)- 



A. scoPARius, Mictix. Fl. 



Prairie; common. 

 Chrysopogon nutans, (L.) Bentli. Jour. Linn. Soc.xix.lS81. — 

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



Prairie; common. 

 Phalaris Canariensis, L. Spec. 



Streets of Story City. 

 P. ARUXDiNACEA, L. Spec. 



Marshes; infrequent. 

 Aristida gracilis, Ell. Sk. i. 



Dry hills ; infrequent. 

 Stipa spartea, Trin. Stipje, 1842. 

 Prairie; abundant. 



Oryzopsis mrlaxocarpa, Muhl. Gram. 



Dry rocky woods ; not uncommon. 

 MuHLENBERGiA SOBOLIFERA, (Muhl.) Trin. Diss. i. — Agrostis 

 sobolifera. Muhl. Gram. 

 Dry hills ; infrequent. 

 :M. racemosa, (Michx.) B. S. P. G&X,.— Agrostis racemosa, Michx. 

 Fl. — AI. glotneraia^ Trin. Diss. i. 



Dry clay bluffs or wet grassy places ; frequent. 

 M, sylvatica, (Torr.) Torr. & Gray, in Gray, Grani.& Gyp. i. 1834. 

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

 Upland woods; frequent. 

 M, TEXuiFLORA, ( Willd.) B. S. p. Cat.— ^(/ros^is tenui flora, Willd. 

 Spec. i. — M. Willdenovit\ Trin. Diss. i. 

 Upland woods; not uncommon. 

 M. Di-FFUSA, Schreb. Gram. ii. 1772-1779. 



'Open lowland woods ; abundant. 

 Brachyelytrum erectu:m, (Schreb.) Beauv. — Muhlenberr/ia 

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

 1812. — B. afistosum, (Michx.) B. S. P. Cat'. — Dilepyrum ayistostim, 

 Michx. Fl. 



Rich woods: frequent. 

 Ours is the form, var. Engelmanni, Gray, Man. Jtli ed. 



Phleum pratense, L. Spec. 



Meadows and pastures; common. 

 Sporobolus vaginfeflorus, (Torr.) Vasey, Desc. Cat. 1885. — Vilfa 

 vagincejiora. Torr. in Gray. Gram. iV Cyp. i. 1S34. 



Sandv and sterile soil. 



