640 POACEiE. 



are very broad with short awns. Plants are found in various places 

 which sliade off almost impereeiDtibly into A. caninum. 

 O^^^iyi^^tj 9- A. caninoides (itrr-Pottfi4). A. violaceum (forma) caninoides 



ll$r^^^^i^l B^'^^Stmd, Minn. Bot. Studies, Bull. 9 (III), 107 (1894). 



/ Perennial with no rootstocks. Culms rigid, 30-140 cm. high. 

 Leaves 5-<j in number, sheaths sliorter than the internodes ; ligule 1 

 mm. or less long; blades flat, rather thin, pungent-pointed, 15-30 

 cm. long, 5-7 mm. wide. Spike 15-18 cm. long, erect, rachis with 

 green margins. Spikelets 2-3-flowered; empty glumes 7-9 mm. 

 long, with scarious margins, 5-7-nerved, the awn 2-5 mm. long ; 

 floral glume 7 mm. long, bearing a rather stiff awn, 10-20 mm. 

 long. Usually compared with A. caninum. 



Michigan (Agricultural College), Beal & Wheeler, 162, 163. 



Dry knolls or low land and borders of woods; growing in 

 isolated bunches. Promising for cultivation. 



Xew Hampshire, Michigan, Minnesota to Rocky Mountains. 



141. (267). Secale L. Sp. PI. 84 (1753). Rye. 



Spikelets usually 2-flowered in a cylindrical or flattened spike, 

 sessile, compressed, one at each joint on alternate sides of the 

 rachis, not inflated, convex on the outer side and flat next the 

 rachis, rachilla becoming a slender stipe above the flowers. Empty 

 glumes firm, narrowly linear, compressed-keeled, acute, acuminate 

 or with a short awn; floral glume broader, compressed-keeled, 

 scarcely longer, not counting the long awn, 5-nerved, the outer 

 ones prominent, those next the rachis obscure; palea a little shorter 

 than the floral glume, narrow, 2-keeled. Stamens 3. Styles very 

 short, distinct, stigmas feathery. Grain oblong, subterete, furrowed 

 on the inside, hairy at the apex, included by the glume and palea, 

 free or slightly adhering to the palea. 



Erect annuals with flat blades. Spike terminal, compact, 

 jointed at the nodes of the slender rachis, which is usually hairy. 



Species 2 or perhaps only 1, indigenous to the country bordering 

 the Mediterranean Sea. The genus differs slightly from the section 

 Eremojiyrum of Agropyron in the dense cylindrical spike, and in 

 the spikelets usually containing only 2 flowers. 



1. S. CEREALE L. 1. C. 



