HORUE.E. 639 



habit, low size, and smooth, rigid, sometimes glaucous leaves. 

 Found only higli up on mountains near the timber line, growing 

 in scattered tufts. Named for Prof. F. L. Scribner. 



In the Sierras, Pringle; Colorado, Patterson; Montana, Scrib- 

 ner; Washington, Tweedy. 



7. A. caninum (L.) Beauv. Agrost. 102 (1812). Triticum 

 canimim L. Sp. PI. 86 (1753). 



A smooth perennial, 70-90 cm. high, culms slender, rather weak. 

 Leaves 4-5 in number, sheaths smooth; ligule very sliort; blades 

 thin, 10-25 cm. long, 5-12 mm. wide, taper-pointed. Spike nar- 

 row, flexuose or slightly nodding, 10-17 cm. long. Spikelets 3-5- 

 flowered; empty glumes with scarious wing-margins above, nearly 

 equal, with 3-5 conspicuoiis nerves, first 7-9 mm. long, second a 

 little longer; floral glume 8-9 mm. long, awn 2-18 mm. long, 

 flexuose; palea longer tlum the floral glume. Grain adherent. 



Maine, Fernald 196; Vermont, Pringle; Michigan, Prentiss, 

 Beat 164, 166, Wheeler 165, Farivell; Montana, Anderson 28; 

 Utah, Jones; Arizona, Tourney 761; Minnesota, ArthicrB 42. 



New England to California. 



8. A. violaceum (Hornm.) Vasey, Grass. U. S., Special Kept. 

 Dept. Agricul. 45 (1883). Triticum violaceum Hornm. Fl. Dan. 

 t. 2044 (1832). 



Perhaps this is a northern or alpine form of A. caninum E. & 

 S., from which it differs in having a culm 30-50 cm. high, leaves 

 3-4 in number, blades proportionally shorter. Spike 3-8-12 cm. 

 long, narrow, strict, more or less tinged with violet. Spikelets 3-5- 

 flowered; floral glume wider than in A. cani?mm, not so firm, 

 nerves more prominent, awn short or none; palea shorter than the 

 floral glume, pectinate-ciliate. 



New Hampshire, Pringle, Faxon 20, 23, Hosford ; Colorado, 

 Cassidy for U. S. Dept, Agricul. ; Michigan, Wheeler, Farivell ; 

 Minnesota, Arthur B 494; Wyoming, Buffum C 30, C 45. 



Mountains of New England, New York, nortliern Minnesota, 

 Colorado, California, and northward; also found in Europe. 



Plants collected in Grinnell Land by Lieut. Greely are 8-15 

 cm. high, Avith sliort spikes and densely pubescent glumes, which 



