1D18] The Grasses op Illinois 417 



ILLINOIS SPECIMENS: Without locality, river banks, Vasey. champaign go. 

 Urbana, Seymour, Aug., 1880; Urbana, Moslicr, Oct., 1915; Alahomet, Gibbs and 

 Clinton, Oct., 1898. christian co. Taylorvillc, Andrews, cook co. Evanston, 

 Shipman, Oct., 1875; Chicago, Lansing, July, 1898. fulton co. Without local- 

 ity, Pepoon; Canton, Wolf, jo daviess co. Without locality, Pepoon. kanka- 

 KEE CO. Kankakee, Hill 318 in 1873. mchenry CO. Eing\vood, Vasey. macon 

 CO. Decatur, Clokey in 1898. peoria co. Peoria, Brendel; between Laura and 

 Monica, V. H. Chase 1824. ST. clair co. Mascoutah, IVelsch. stark co. Wady 

 Petra, V. H. Chase 1549. tazewell co. Without locality, McDonald, July, 1889. 

 WABASH CO. Without locality, Schneclc, July, 1879 and 1904; without locality, 

 Shearer ; Mt. Carmel, Schneclc, June, 1879 and July, 1900. 



Elymus virginicus liirsutiglumis. (Scribn.) Hitehc. — This vari- 

 ety differs from the species in having hairy glumes and lemmas. 



ILLINOIS specimens: Without locality, prairies in northern Illinois, M, S. 

 Behb in 1859. ST. clair co. Mascoutah, Welsch. stark co. Wady Petra, V. 

 H. Chase 1231, 1541. 



Elymus virginicus suhmuticus Hook. — In this variety the ghimes 

 and lemmas are awnless or awn-pointed and slightly roughened. 

 ST. clair CO. Mascoutah, Welsch. 



62. HYSTRIX Moench. 



This grass has much the general appearance of Elymus, but the 

 spikelets-, which are in groups of two or three, have a very short pedi- 

 cel and at maturity stand horizontally from the stem. The glumes 

 are reduced to short awns and one or both may be wanting. The 

 spikelets are 2- to 4-flowered with long-awned lemmas. The plants 

 are perennial with rather broad, flat leaves and very short thick ligules. 

 A single species is found in Illinois. 



Hystrix hystrix (L.) Millsp. 

 Bottle-brush Grass (Figs. 284 and 285) 



Gymnostichum hystrix, Lapham '57, 547, 588 (Plate 3, Fig. 11) ; Babcock 

 '73, 97; Patterson '76, 51; Flagg '78, 283; Brendel '87, 64. Asprclla hystrix, 

 Higley and Eaddin '91, 147; Huett '97, 131. Uystrix patula, Gray's Manual, 

 7th ed. 



Culms unbranched, 2 to 4 feet tall ; sheaths smooth ; blades rough, 

 4 to 12 inches long, 8 to 15 mm. wide; spike often included in the 

 upper sheath, 2 to 6 inches long, loosely flowered; spikelets 10 to 15 

 mm. long, excluding the awns ; lemmas often pubescent, their awns 1.5 

 to 4 cm. long. 



This grass is found in moist woods. 



CHAMPAIGN CO. Urbana, Seymour and Waite, July, 1886 ; Urbana, Seymour, 

 June, 1880. cook co. Without locality, Lapham; Evanston, Shipman, Oct., 1875. 

 CHRISTIAN CO. Taylorville, Andrews, fulton co. Without locality, Pepoon. 

 JO DAVIESS CO. Without locality, Pepoon. kankakee co. Kankakee, Hill 216 in 

 1873. KNOX CO. Williamsfield, V. U. Chase 1840. lake co. Channel lake, 

 Antioch, Gleason and Shobe, Aug., 1906; Lake Forest, Jensen in 1895. mchenry 

 CO. Algonquin, Nason, July, 1878. macoupin co. Carlinville, Bobertson, Aug., 

 1880. PEORIA CO. Peoria, Brendel. ST. clair co. Mascoutah, Welsch. stark 

 CO. Wady Petra, V. H. Chase 1506 ; near Spoon river, V. H. Chase 622. wabasii 

 CO. Without locality, Schnrcl-, July, 1900; without locality, Shearer. 



