SECALE. CLXI. GRAMINE^l. 619 



A. APLULolDES. Muhl. 



St. 1 2f high, geniculate at base, ascending, terete ; Ivs. linear-lanceo- 

 late, smoothish beneath, pilose above; slip, short, truncate; spikes 4 6" -long, 

 20 40, on short, flat peduncles, thinly arranged in 2 opposite rows, each with 

 4 8 spikelets; spikekts 2-flowered, arranged in 2 rows on the under side of the 

 flat, partial rachis ; glumes unequal, the lower awn-like and slightly adhering 

 to the rachis ; anth. 3, bright red ; Jr. oblong ; abortive fl. pedicellate, empty. 

 1\. Middle and Western States. Guilford, Conn., Bobbins ! 



TRIBE 9. HORDED. Inflorescence spiked. Spikelets solitary, in pairs, or 

 several together, one, few or many-flowered. Glumes mostly two, equal and 

 opposite, rarely unequal and alternate. Lower palea awned or awnless, up- 

 per one with 2 keels. 



51. TRITICUM. 



Lat. tritum, rubbed or ground ; alluding 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, mucronate ; paleae 2, lower awned or mucro- 

 nate ; scales 2, collateral. 



1. T. SATIVUM. /?. hybernum. Winter Wheat. 



St. round, smooth, the internodes somewhat inflated, 3 5f high; Ivs. 

 lance-linear, veined, roughish above ; stip. truncate ; spike parallel, somewhat 

 4-sided ; spikelets crowded, broad-ovate, about 4-flowered ; glumes ventricose ; 

 awns of the upper palea generally longer than the flowers. and (g) This is 

 without doubt the most valuable plant of the order ; is universally cultivated, 

 and may be regarded as naturalized. Many varieties are known to farmers, 

 of which the most important are 



y. astivum. Summer Wheat. Glumes always awned. (I) 

 6. compositum. Egyptian Wheat. Spike compound ; spikekts awned. 



2. T. REPENS. (Agropyron. Palis.') 



St. trailing at the lower joints, about 2f high; Ivs. lance-linear, rough 

 above and somewhat hairy ; stip. short, truncate ; spike compressed, about 3' in 

 length ; spikelets remote, alternate, lance-oblong, 5 6-flowered ; glumes lanceo- 

 late, 5-veined, acuminate. 1\. A vile weed, in fields and gardens, extremely 

 difficult to eradicate. June Aug. 



3. T. CANINUM. R. & S. Dog's Couch Grass. 



St. 2 3f high, erect or oblique ; Ivs. flat, smooth ; stip. almost wanting ; 

 spikelets about 5-flowered ; glumes 3- veined, and with the outer palea, terminat- 

 ing in a straight, scabrous bristle, longer than the flowers. Delaware, Muhlen- 

 berg. Probably . 



4. T. CRISTATUM. Schreb. (Bromus cristatus. Linn.} 



St. erect, glabrous ; spike oblong, compressed, imbricated in 2 rows, about 

 5-flowered, smoothish, spreading; palece, subulate-awned. Penn. Schweinitz 

 (Deck, hot., p. 416). 



52. SEC ALE. 



Celtic segal, from sega, a sickle. 



Spikelets solitary on the teeth of the rachis, 2 3-flowered, the 2 

 lower flowers fertile, sessile, opposite, the upper one abortive ; glumes 

 subulate, opposite, shorter than the flowers ; lower palea with a very 

 long awn, upper often bifid at apex ; scales abortive, hairy. 



5. CEREALE. Rye. 



St. hairy beneath the spike, 4 6f high ; Ivs. lance-linear, rough-edged 

 and rough above, glaucous ; spike about 5' long, linear, compressed ; palea 

 smooth, lower ciliate on the keel and margin; awns scabrous-ciliate, long, 

 straight, erect. or @ The native country of this highly valuable grain is 

 unknown. It has long been cultivated, and like the wheat, may be considered 

 naturalized. June, July. 



