FESTUCE.E. 537 



ion; Michigan, Scrihier 3488 from Wheeler, Cooley, Beal 122, 123, 

 (Flint) Clark 1298. 



12. P. sylvestris A. Gray, Man. Ed. 1 : 59G (1848). 



A soft smooth pale-green tufted erect perennial, 00-80 cm. high; 

 culms flattish. Sheaths smooth or scabrid, mostly shorter than the 

 internodes; ligule obtuse, lacerate, 1.5 mm. long; blades of sterile 

 shoots soft, flat, acuminate, 10-15 cm. long, 2-3 mm. wide, those 

 of the culm 4 in number, acute or acuminate, 6-10 cm. long, 3-4 

 mm. wide. Panicle open, oblong-pyramidal, 10-15 cm, long, rays 

 slender, in fours to sevens in about ten sets, often drooping, the 

 longest 4-6 cm. long, bearing a few branches beyond the middle. 

 Spikelets pedicellate, oblong or wider, 3-4 mm. long, usually 2-3- 

 flowered, joint of rachilla O.G-0.7 mm. long, first empty glume 1.7- 

 2.3 mm. long, ovate-acute, 1-nerved, second oval-acute, 3-nerved, 

 2-2.7 mm. long; floral glume oval, obtuse or subacute wlien spread, 

 2.5-3 mm. long, keel and marginal nerves villous for nearly their 

 entire length to the narrow scarious a2)ex, sparingly webl)ed at the 

 base; palea oval, 2-tootlied, 2-2.2 mm. long, ciliate on tlie keels. 



Delaware, Canhy; District of Columbia, Vasey for U. S. Dej)t. 

 Agricul. 669; Michigan, Beal £ ]]lieeler 124. 



Woods, Delaware, New York to Wisconsin and southward. 



13. P. conglomerata Kupr. Bull. Acad. Brux. 9:Part2, 235 

 (1842). 



A rather soft and nearly smooth light-green perennial, 30-50 em. 

 high. Culms weak and compressed; nodes 2-3. Leaves of sterile 

 shoots not numerous; ligule 2 mm. long; blades flat, acute, 5-8 

 cm. long, 1.5 mm. wide, blades of the culm much the same. Pan- 

 icle slender, spikelike, 8-15 cm. long, rays mostly in pairs, ap- 

 pressed, the lowest distant 2-3 cm., the longest 2-4 cm. long, bear- 

 ing short nearly sessile branches for most of its Icugtli. Spikelets 

 oval, acute, 3-flowered, 3-4 mm. long, first empty glume lanceolate, 

 1-nervcd, 1.7-2 mm. long, second oval, acute when sjjread, 3- 

 nerved, 2.3 mm. long; floral glume sparingly webbed on the lower 

 third of the 3 nerves, oval, acute when spread, 2.5 mm. long; 

 lateral nerves evanescent one- third the way below the apex; palea 

 2 mm. long. Anthers oblong, 5-6 mm. long. 



