412 Bulletin No. 205 [March, 



CHAMPAIGN CO. Champaign, Gibhs, Oct., 1898; Champaign, Clinton, Sept., 

 1895; Urbana, Seymour, June, 1880. christian CO. Taylorvillc, Andrews. 

 COOK CO. Woodlawn, Chicago, Lansing, June, 1898; Jackson Park, Chicago, 

 Clark, June, 1903; Willow Springs, Grassley, July, 1876; Lake Forest, Jensen in 

 1895; Evanston, Shipman; Evanston, Johnson, Sept., 1886; Chicago, Vasey; Chi- 

 cago, Rolton, Aug., 1850. DU page co. Hinsdale, Smith, Sept., 1902 ; Naperville, 

 Umbach, June, 1898. fulton CO. Without locality, Pepoon. JO daviess CO. 

 Without locality, Pepoon 25. kane co. Elgin, Sherff, 1799. kankakee CO. 

 Kankakee, De Selm, June, 1913. lake co. Kockefeller, Gates, July, 1907. 

 PEORIA CO. Peoria,, McDonald, stark co. Wady Petra, V. II. Chase 72. ver- 

 milion CO. Muncio, Moshcr, May, 1914. winnebago CO. Fountaindale, M. S. 

 Bebb. 



Hordeum nodosum L. 

 Meadow Barley (Fig. 276) 



Hordeum pratcnse, Patterson '76, 51; Flagg '78, 282; Brendel '87, 64; Huett 

 '97, 131. 



Culms sometimes decumbent, 6 inches to 2 feet tall ; sheaths smooth ; 

 blades rough, 1 to 5 inches long, 1 to 4 mm. wide ; spikes 1 to 3 inches 

 long ; spikclets mostly in threes and all of the glumes reduced to awns ; 

 lemma of the perfect spikelet 6 to 8 mm. long, the awns from 6 to 12 

 mm. long. 



This species is often confused with //. pusillum by collectors, as 

 it has the same general appearance altho it is usually a little taller. 

 The character of the glumes is sufficient to separate them. H. nodo- 

 sum is apparently rare in Illinois. It is found in meadows and waste 

 places. 



christian CO. Taylorvillc, Andrews. Henderson co. Oquawka, Patterson, 

 •June, 1872. la salle co. Utiea, Umbach, May, 1906. 



Hordeum pammeli Scribn. and Ball 

 (Fig. 277) 



Culms erect, or bent at base, 2 to 3.5 feet tall ; sheaths smooth ; 

 blades 6 to 8 inches long, 5 to 8 mm. wide, rough, acuminate; spikes 

 nodding, 3 to 7 inches long ; spikclets in threes, all perfect, the middle 

 spikelet 2-flowered; lemmas 7 to 8 mm. long; glumes modified into 

 slender awns. 



This species closely resembles cultivated barley. It is a perennial 

 found on damp prairie soil or along roadsides. 



stark CO. Near Wady Pctrn, V. TI. Chase 14(i7, 1525, 1529. 



Hordeum pusillum Nntt. 



Little Barley (Figs. 274 and 278) 



Engclmann '44, 104; Lapham '57, 547, 587; Gleason '10, 149. 



Culms erect, in small tufts, 4 to 16 inches tall ; sheaths smooth ; 



blades 1 to 2.5 inches long, 1 to 3 mm. wide, rough ; spikes .5 to 3 



inches long ; spikclets in threes, the lateral ones imperfect ; glumes of 



