802 Oedkr 166.— GRAMINE^E. 



2 E. Europaeus L. Culm erect, 3 to 5f, lvs. lance-linear, scabrous, with some- 

 what hairy sheaths ; spike suberect, 5 to 8', very scabrous but nearly glabrous ; 

 spikelets ternate, 2-flowered, with long (15 to 25"), stout, straight, diverging awns 

 all of similar length. — Along rivers, S. States. The long parallel awns give it 

 quite a different appearance from No. 3. 



3 E. Canadensis L. Culm erect, 3 to 5f ; lvs. lance-linear, flat, smooth, dark 

 green, or often glaucous ; spike rather loose and spreading, 4 to 8' long, generally 

 nodding, rachis hairy, spikelets more or less hairy, in 2s and 3s, 3 to 6-flowered, 

 awns of the fis. usually curved, longer (7 to 17") than thoso of the glumes. — A 

 tall grass, looking like Eye, with long, recurved, waving spike3. River banks. Aug. 



4 E. striatus "Willd. St. slender, erect ; lvs. and sheaths smooth, the former 

 lance-linear, acuminate, scabrous on the upper surface; spike erect, 2 to 3' long; 

 invol. 4-leaved, strongly veined ; spikelets in pairs, somewhat spreading, hispid, 

 1 to 2-flowered ; awns 3 or 4 times as long as thepaU. — 71 Mass. to Pcnn., "W. to 

 Ohio, rare. A small and slender species. July. (E. villosus MuhL is some larger, 

 with very hairy glumes.) 



5 E. m611is Trin. Culm velvety pubescent above, stout, 2 to 4f ; lvs. involute- 

 compressed, glabrous as well as tho striate sheaths ; spiko thick, erect, 6 to 8" ; 

 spikelets in pairs, about 7-flowered, awnless, all clothed with a soft pubescence ; 

 glumes shorter than tho fis. — Lake shores, Min. and Can. "W. 



6 E. Hystrix L. Culm round, smooth, 2 — 4f ; lvs. lance-linear, carinate, scabrous, 

 generally glaucous and with the sheaths striate ; spiko 4 — 6' long, erect ; raohie 

 nearly smooth, flexuous; spikelets remote, diverging, almost horizontal, 2 — 3- 

 flowered ; glumes 0, rarely 1 or 2 ; fis. smoothish ; lower paleae terminating in a 

 very long awn. — 11 An odd-looking grass, in moist woods, N. States, common. Jl. 



50. L0 v LIUM, L. Darnel Grass. Spikelets many-flowered, sessile, 

 remote, with the edge to the rachis; glume to the lower spikelet single, 

 to the terminal one 2 ; palcco herbaceous, subequal, lower one short- 

 awned or mucronate, upper bifid-toothed. 



1 L. perenne L. Ray Darnel. Smooth ; culm terete, 1 — 2f ; lvs. lance-linear, 

 shining-green, on striate sheaths with truncate stipules; rachis flexuous, grooved, 

 5 — 6' long; spikelets aivtiless, about 1G, longer than the glume, 7 — 9-flowered, 

 alternate, in two opposite rows ; lower paleae 5-veined, upper with 2, prominent, 

 rough keels. — Zf Meadows, cultivated grounds, etc. May, June. § Eur. 



2 L. temulentum L. Poisonous Darnel. Culm terete, smooth, 2f ; lvs. lance- 

 linear, rough-edged, and with tho sheaths, smooth on the surface ; stip. truncate ; 

 rachis flexuous, 4 — G' long; spikelets much compressed, 5 — 7-flowered, not longer 

 than the glume ; lower pale 5-veined, produced into an awn mice its length.. — QD 

 Remarkably distinguished from all other grasses by its poisonous seeds. N. Eng. 

 to Penn. July. § Eur. 



51. TRIT'ICUM, L. Wheat. (Lat. tritum, rubbed or ground ; al- 

 luding to the manner of its preparation for food.) Spikelets imbricated 

 in 2 rows, sessile on the teeth of the rachis, about 5-flowered, with the 

 upper flowers abortive ; glumes 2, equal, opposite, ovate, concave, mu- 

 cronate ; palea? 2, lower awned or mucronate; scaler 2, collateral. — Fis. 

 arranged iu spikes. 



§ Tn'mcuM proper. (!) Glu:nos riblon?, obtuse, ventrieous-concave. Spiko 4-shlod No. 1 



§ Aghoi'ykon, Kth. V, Glumes lanceolate, pointed. Spikelets mostly 2-rwiked Nos. 2, 8 



1 T. vulgare Villars. Common "Wheat. Culm terete, sfcnootb, the inter- 

 nodes somewhat inflated, 3 to 5f; lvs. lance-linear, veined, roughish above; stip. 

 truncate ; spike parallel, somewhat 4-sided ; spikelets crowded, broad-ovate, 

 about 4-flowered ; glumes veutricous ; awns of tho upper paleae generally longer 

 •fchan tho flowers. — (J) and © This is without doubt the most valuablo plant of the 

 Order. Cultivated from the earliest historic times. Many variotios are known to 

 farmers, classed as Summer "Wheat, and "Winter "Wheat; Awned or Awnless. 

 ,3. compositum. Egyptian "Wheat. Spike compound. Spikeleta awned. 

 2 T rdpens L. Couch-grass. Quich Grass. Calm trailing at tho lower 



