HITCHCOCK PLANTS OF AMES, IOWA. 52c; 



C. Davisii, Schwein. & Torr. Mod. Cyp. 1825. 



Wet places ; abundant. 

 C. grtsea, Wahl. Konigl. Ac. Handl. xxiv. 1803. 



Grassland; common. 

 C. laxiflora, Lam., var. latifolia, Boott, 111. 1858-1867. 



Rich woods; infrequent. 

 C. tetanica, Schkuhr, var. Meadii, (Dewey) Bailey, Sya. Car. 

 1SS6. — C. Meadii, Dewey, Amer. Jour. Sci. xliii. 1S42. 



Grassland; frequent. 

 C. eburxea, Boott, in Hook. Fl. ii. 



Woods ; infrequent. 

 C. Pexxsyevanica, Lam. Diet. iii. 



Dry woods; common. 

 C. PUBescens, Muhl. in Willd. Spec. iv. 



Rich woods ; not uncommon. 

 C. coxjuxcta, Boott, 111. 1858-1867. 



Low grass land ; common- 

 C. gravida, Bailey; var. eaxifoeia, Bailey, Types. Car. 1889. 



Low ground; not uncommon. 

 C. vulpixoidea. Michx. Fl. 



Low grass land; common. 

 C. Sartwellii, Dewey, in Amer. Jour. Sci. xli. 1842. 



One imperfect specimen, marked by Prof. Bailey, "probably." 



C. spargaxioides, Muni, in Willd. Spec. iv. 



Low ground ; common. 

 C. cephalophora. Muhl. in Willd. Spec. iv. 



Low ground; frequent. 

 C. Muskixgumexsis, Schwein. Ann. Tab. 1823. 



Sloughs; frequent. 

 C. tribuloides, Wahl., var. cristata, (Schwein.) Bailey, Syn. 

 Car. 1SS6. — C. cristata, Schwein. Ann. Tab. 1S23. 

 Low ground, common. 

 C. stbaminea, Willd., var. festucacea, (Willd.) — C. festucacea, 

 W'iild. Spec. iv. — C. straminea, Willd., var. brevior, Dewey, Amer. 

 Jour. Sci. xi. 1S26. 



Low ground ; common. 

 Var. alata, (Torr. j Bailey, Cat. Car. 1884.— C. alata y Torr. 

 Mon. Cyp. 



Grass land. 



GUAM INK .11. 



Spakttxa cynosuroides, (L.) Willd. Enuni. i.—Dactijlis cynosu- 



roides, L. Spec. 



Sloughs: abundant. 



