634 



POACE^. 



small. A low slender annual with short, narrow blades. Spike 



terminal, slender, firm, straight, slightly compressed. Its affinities 



are with Lejjturus, Kralikia and PsiJnr%is. 



A genus named for Prof. F. Lamson Scribner by Ernest 



Hackel, and by Thurber included in Lepturus. 



1. S. Bolanderi (Thurb.). Hack. 1. c. Leidurus Bolanderi 



Thurb. Proc. Am. Acad. 7 : 401. 

 The characters of tlie genus. 

 California and Oregon. 

 140. (266). Agropyron J. Ga^rtn. Nov. Comm. Petrop. 14: 



(I) 539 (1770). Anthosachne Steud. Syn. PI. Gram. 237 (1855). 



Braconotia Godr. 1. c. Ed. 1.3 : 191 (1844). Costia Willk. 

 Bot. Zeit. 377 (1858). Cremopyrum Schur, 

 Enum. PI. Transs. 807 (1866). Crithopi/rum 

 Hort. Prag. Steud. Syn. PI. Gram. 344 

 (1855). Elytrigia Desv. Xouv. Bull. Soc. 

 Philom. 2:190 (1810). Eremopymm Jaub. 

 & Spach, Illustr. PI. Or. 4:26 (1850-53). 

 Haynaldia Schur, Enum. PI. Transs. 807 

 (1866). Heterantlieliuiii Hochst. Jaub. & 

 Spach, Illustr. PI. Or. 4:24 (1850). Rwg- 

 neria C. Koch, Linnwa, 21:413 (1848). Se- 

 calidinm Schur, Verb. Siebenb. Yer. Naturw. 

 4:91 (1853). 



Spikelets3-S-flowered, compressed, sessile 

 at each joint of the simple spike, distichous, 

 turning one side or sometimes oblique to the 

 rachis, racbilla often articulate between the 

 flowers, which are perfect or the uj^per im- 

 perfect. Empty glumes rounded on the back, 

 not inflated, narrower than the floral and 



Fig. 120.-5cn6nena5^-with fewer nerves; floral glumes firm, round 



landeri. A, spikelet ; on the back, very little if at all keeled, 5-7- 



a. floret ; d, grain. 



(Scribner.) nerved, obtuse, acute, or the upper nerves 



extending into an awn, the upper smaller, often empty or enclosing 



an imperfect flower; palea shorter (sometimes longer) than the 



