160 TWELFTH ANNUAL REPORT. 



ALOPECURUS, L. Foxtail Grass. 



A. g'euiculatiis, L., var. aristvilatus, Munro. (A. aristulatus, Michx.) 

 Wild Foxtail. 

 Common, or frequent, throughout the state. 



PHLEU3I, L. Cat's-tail Grass. 



P. pratense, L. Timothy. Herd' s-Grass (of New England). 

 Commonly cultivated, often spontaneous, throughout the state. 



SPOROBOLiUS, R. Br. (Including Vilfa, Beauv.) Drop-seed 

 Grass. Rush-Grass. 



S. asper, Kunth. (Vilfa aspera, Beauv.) Rush-Grass. 

 Lapham. New Uim, Juni. South. 



S. vaghipefloi'iis, Torr. (V. vaginaefiora, Torr.) Rush-Grass. 



Lapham. Minneapolis (sandy bottomland of the Mississippi river), Oestliind; 

 Emmet county, Iowa (frequent), Cratty. South. 



S. ciispidatus, Torr. (V. cuspidata, Torr.) Rush-Grass. 



Lapham. Hennepin and Goodhue counties, Uestlund; Emmet county, Iowa (rare), 

 Cratty. [Devil's lake, and southern Dakota, Geyer; Manitoba, Macoun.] 



S. (lepauperatus, Torr.* (V. depauperata, Torr.) Rush-Grass. 

 Ked river valley, at Pembina, HavarcJ. West. 



S. jimceus, Kunth. Drop-seed Grass. 

 Lapham. New Ulm, Junt. Rare. South. 



S. lieterolepis, Gray. Drop-seed Grass. 



Throughout the state, excepting perhaps northeastward. Ramsey county, OestJund; 

 Blue Earth county, i/ci/jcrg; common In Emmet county, Iowa, Cratty. [Eastern Ne- 

 braska (abundant), Aughey; Manitoba, 3Iacoun.] 



S. cryptanclru.s, Gray. Drop-seed Grass. 



Through the south part of the state. Ramsey county, Oestlund; Minneapolis, Sim- 

 mons, Upham, Dr. Vasey; Emmet county, Iowa (rare), Cratty; Spirit lake and Little 

 Sioux river, Geyer. 



AGROSTIS, L. Bent-Grass. 



A. perennans, Tuckerman. Thin-Grass. 



Throughout the state, excepting perhaps northeastward. Lapham. Minne- 

 apolis, Upham; Pembina, Havard. 



A. scabra, Wiild. Hair-Grass. 



Common, or frequent, throughout the state. 



♦Sporoboltjs depauperatus, Torr. Root perennial, creeping ; culms ascending, 

 appressed -branched, slender, often geniculate, glabrous, striate, rather rigid, V2 to 2feet 

 long; leaves 1 to 3 inches long, narrow and usually convolute, spreading or recurved ; 

 panicle very slender and contracted, l to 3 inches long ; compound or often nearly 

 simple; spikelets small ; glumes unequal, ovate, obtuse or acutish, membranous, two- 

 thirds tiie length of the acute lower palet, which is more less obscurely 3-nerved. 



Resembling V. cuspidata, and scarcely differing except in the shorter obtuse glumes of 

 the rather smaller flowers. Lower palet a little more than 1 line long, glabrous or 

 slightly scabrous on the midnerve, ihe upper one obtuse or erose at the summit. Wat- 

 son's Rep. in King's Ex])!. of the Fortieth Parallel. 



