418 



906. LOLITJM. 



9. arvense. Fits, elliptic, a^^oiless, or ter- 

 minating in a short and slender bristle, a mere 

 continuation of the midi-ib. Glumes nearly 

 equal to spicules. Stem quite smooth, a. 7- 

 Corn. 



907. TraTICUM. 



A. Annual. Of very extensive field culti- 

 vation, and sometimes escaping, but not 

 permanently establishing themselves. Sp. 

 1-7. 



B. Perennial. Wild. 

 i. Root creejiing. 



a. Spicules in middle of Spike not reach- 

 ing to base of second spicule above 

 them. Sp. 8. 



b. Spicules reaching to, or beyond base 

 of second spicule above them. Sp. 

 9-15. 



ii. Eoot not creeping. Sp. 16-20. 



A. AnnvMl. Cultivated. Glumes ventricose. 

 i. Seed free. Rachis tough. 



1. vulgare. Erect, smooth. Spicules 4- 

 flowered. Glumes irregularly ovate, truncate, 

 compressed below tip. Nerve obtusely pro- 

 minent. Rachis with a hairy margin. 



a. (sstivum. Glumes awned. 



P- hyhernum. Glumes nearly awnless. a. 

 5, 6. 



2. turgidum. Spicules 4-flowered, turgid, 

 villous. Glumes ovate, truncate ; with wing- 

 like keel, and broad point. 



)3. compositum. Spike branched, a. 5, 6. 



3. durum. Spicules generally 4-flowered. 

 Glumes oblong, three times as long as broad ; 

 with wing- like keel, broad point, and long 

 awn. Culm fuU. Ser ds long, horny, gibbous. 

 a. 5, 6. Cult, in s. Eur. 



4. polonicum. Spike irregular. Spicules 

 usually 3-flowered. Glumes oblongo-lauceolate, 

 thin and papery, conspicuously many-nerved. 

 Upper Pale of outer floret half as long as lower. 

 Culm full. a. 5, 6. Cult, in G. and n. It. 



ii. Seeds covered unth permanent pales. 

 Rachis brittle. 



5. Spelta. Spike parallelly flattened, 

 loosely imbricate. Spicules generally 4-fiow- 

 ered. Glumes ovate, truncate, mucronate, 

 with an obtuse tooth on one side. Cusp of 

 Glume straight, a. 5, 6. C^ilt. in s. Em-. 



6. dicoccutn. Spike pressed edgewise. 



closely imbricate. Spicules generally 4-flow- 

 ered, 2-seeded. Glumes dentato -mucronate, 

 with an obtuse tooth on one side. Keel com- 

 pressed, very preeminent, and with the teeth 

 inflexed. a. 5, 6. Cult, in G. 



7. monococcum. Spike compressed, 

 closely imbricate. Spicules about 3-flowered. 

 Seed 1. Glumes bidentate. Lateral Tooth 

 acute, straight. Keel running out in a straight 

 point, a. 5, 6. Cult, in G. Sw. n. It. 



S. Perennial. Wild. 



i. Root creeping. 



a. Spicules in middle of Spike not reaching 

 to base of second spicule above them. 



8. junceum. Spicules 5-8-flowered. Glumes 

 very obtuse, 9-nerved, half as long as spicule. 

 Pale obtuse, pointless. Eachis hairless, fra- 

 gile. L. velvety above, p. 6-8. Sandy 

 shores. 



b. Spicules in middle of spilce, reaching to or 

 beyond the base of the second spicule above 

 them (sometimes even to the base of the 

 fifth). 



9. obtusifiorum. " Spike sub continuous. 

 Glumes very obtuse, 9-nei'ved. Fits, awnless, 

 obtuse, ■with a little point. Rachis rough. L. 

 plano-subconvolute, glaucous, p. Zeeland." — 



KUNTH. 



10. strictum. Stiff and straight. Spicules 

 5-10-flowered, approximate. Glumes lineari- 

 lanceolate, acute, smooth, 5-n©rved. L. flat, 

 convolute when dry, velvety above, p. 6, 7. 

 Shore at "Warnemiinde. 



11. acutum. Spicules 5-8-flowered, ap- 

 proximate. Glumes hneari -lanceolate, 7-nerved, 

 subacute, one-thii-d as long as spicule. Pale 

 subacute. Eachis nearly smooth. L. with 

 rough points on upper surface, p. 6, 7. Shores 

 of Ocean and Baltic. 



12. glaucum. Spicules 5-flowered; the 

 lower rather remote. Glumes oblong, 5-7- 

 nerved, very obtuse or truncate, half as long 

 as spicule. Pale very obtuse, sometimes awned. 

 Rachis asper. L. with a simple row of minute 

 points on the nerves, p. 6, 7. Waysides. 

 G. Fr. Sw. 



13. pungens. Spicules 5-IO-flowered, 

 approximate. Glumes lanceolate, 7-nerved, 

 acute, with a short mucro ; half as long as 

 spicule. Pale obtuse, pointless. L. with a 

 simple row of minute points on nerves, p. 

 6, 7- Sandy shores, occ. 



