ORDER 155. GRAMINE^E. 



40.J 



2 ft. pusilluni N. Cntm ascending, 4 12'; lateral fls. awnlefcs; centred fl. I \vith 



Ssnbequal awns (.7"); spike linear, 1 2' long. @ Ohio, and W. May. 



3 H. VULGABE. Four-rowed B. Cnlm 2 4f ; Ivs. broad, auricled at base ; spike tMck, 



2 V ; fls. all fertile, fruit in 4 rows. Cultivated. May. 



4 H. DKTICHUM. Two-rowed B. Culm and leaves as above. Lateral fls. abortive : 



fruit arranged in two rows. CD More common in cultivation. Jane. 



54. ELYMUS, L. LYMR G. WILD RYE. Spikelets 

 2 4 at each joint of the rachis, 2-6-flwd. Gl. 2, subulate, 

 placed ou the outer side of their spikelet, forming an invo- 

 lucre to the group, sometimes minute, or obsolete. 

 Pales coriaceous, involving the grain, the lower 

 acute or awned. (See Addenda.) 



ELYMUS proper. Involucre present, coneist- 



ingof the conspicuous glumes. ..(a) 

 <i GYMNOSTICHUM. Invol. glumes small or mi- 

 nute, or obsolete No. 6 



a Spikelets 5-8-flowered. soft-pubescent, 



without awns No. 5 



a Spikelet? 1-5-flowered, hard, rough, with conspicuous awns.. .(b) 



b Spikelets glabrous, merely rough, 2- or 3-flowered NOB. 1, 3 



b Spikelets hispid with hairs, 1-3- or 2-5-flowered Nos. 3, 4 



1 li. Vlrgiiilcus L. Culm erect, 3 4f, smooth ; Ivs. broad, flat, scabrous; spike 



35' long, thick, erect, often sheathed at base ; gl. lance-linear, strongly veined, 

 tipped (as well as the 2 or 3 fls.) with short (6 10") awns. 71 Banks. August. 

 ft. areu" in*, (a) Glumes thickened and connate-arcuate at the base. S. 



2 E. EuropseiiM L. Culm erect, 3 5f; Ivs. broad, flat, scabrous; spike suberect, 



68', exserted ; spkl. in 3's, 2-flowered, scabrous, each with 4 long (1J 2') straight 

 awn#; glumes linear, 5-veined. 71 River banks. South. 



3 E. Canadeiiais L. (b) Spikes 4 8' long, rather loose, nodding, hairy; spike- 



lets (b) in 2's and 3's, 3-ti-fl wd. ; awns of the flowers (c) usually curved, longer than 

 (7 13") those of the lance-linear glumes; culm 3 5f. 2f Banks. August. 



4 E. st.rla.tii8 \Villd. Spike 3 4' long, dense, suberect ; spikelets in pairs, 1-3-flwd., 



hispid-pubescent; awns subequal, 3 or 4 times longer than the flowers, it B.mkn 

 and rocky woods. Culm slender, 2 3f. August. 

 /3. lillimiiH. Culm 3 4f, sheaths'villous, and the glumes very hairy. 



5 E. in oil Is Trin. Culm 2 If, stout, soft-pubescent above, as well as the erect 5 Si- 



spike ; spikelets in pairs, about 7-flwd. ; leaves and sheaths smooth. Shores, N-W. 



6 E. Hlstrlx L. Hedgehog G. Glabrous, tall (3 4f) ; spike erect. 46' ; spikelete 



remote on the flexuons rachis, widely divergent, 2- or 3-flwd. ; fls. subulate, $' long, 

 their awns straight, 1' or more ; glumes commonly ru- 

 dimentary. Mr. J. Wolf sends specimen from Illinois 

 with awn-like glumes 4 8" long, li Woods. July. 



55. LOLIUM, L. DARNEL G. Spkl. GO 

 fhvil., sessile, remote, placed edgewise to t!it- 

 axis, the terminal one with 2 glumes, the lateral 

 with but 1. Pales herbaceous, the lower awned 

 or mucronate. 

 L. peremie L. Ray Darnel, (a) Smooth, simple, 



1 2f : epifce 58' ; spkl. 1520, oblong, 56", au nh^s. 



f-13-flowered, flowers exceeding the glume. ii Fields 



May. Juna C 



