Genus 106. 



GRASS FAMILY. 



291 



7. Elymus jejunus (Ramaley) Rydb. 

 Western Wild Rye. Fig. 706. 



Elymus virginicus jejunus Ramaley, Minn. Bot. Stud. 



1 : 114. 1894. 

 Elymus jejunus Rydb. Bull. Torr. Club 36 : 539- 1909. 



Culms 2°-4° tall, slender, smooth and glabrous ; 

 sheaths smooth and glabrous; blades rough, flat, 

 up to 8' long and 5" wide; spikes i¥-4' long, 

 S"-6" in diameter, on long slender peduncles; 

 spikelets, exclusive of the awns, about 6" long, 

 the empty scales indurated and somewhat curved 

 at the base, glabrous, linear, strongly nerved, 

 short-awned, the flowering scales hispidulous or 

 almost glabrous, bearing an awn equalling or 

 longer than themselves. 



Along creeks and rivers in poor soil, Minnesota and 

 North Dakota to Nebraska. July and Aug. 



8. Elymus halophilus Bicknell. Salt Marsh 

 Wild Rye. Fig. 707. 



Elymus halophilus Bicknell, Bull. Torr. Club 35: 201. 1908. 



Culms tufted, erect, rigid, ii°-2i° tall; sheaths gla- 

 brous; blades up to 6' long and 2" wide, stiff, erect, 

 rough, becoming involute when dry; spike erect, long- 

 exserted, ii'-4' long; empty scales 3i"-5" long, at- 

 tenuate into a slender hispidulous awn, hispidulous 

 on the prominent nerves, the flowering scales z"-$k" 

 long, papillose, attenuate into a slender hispidulous awn. 



Salt marshes, Massachusetts to Staten Island. Plant 

 grey-green, glaucous. July-Sept. 



9. Elymus virginicus L. Terrell-grass. Vir- 

 ginia Wild Rye. Fig. 708. 



Elymus virginicus L. Sp. PI. 84. 1753. 



Culms 2 -3° tall, erect, simple, smooth and glabrous. 

 Sheaths usually shorter than the internodes, often 

 overlapping on the lower part of the culm, smooth, 

 sometimes pubescent, the uppermost often inflated and 

 enclosing the peduncle and the base of the spike ; 

 ligule very short; blades s'-i4' long, 2"-%" wide, 

 rough; spike 2'-? in length, broad, stout, upright; 

 spikelets divergent from the rachis, 2-3-flowered; empty 

 scales thick and rigid, lanceolate, 8"-i2" long, in- 

 cluding the short awn, 5-7-nerved ; flowering scales 

 3"-4" long, glabrous, bearing a rough awn 2" -6" in 

 length. 



In moist soil, especially along streams, Nova Scotia to 

 Manitoba, south to Florida and Texas. Ascends to 2000 ft. 

 in North Carolina. Virginia Lyme-grass. July-Aug. 



