146. Graminkak 331 



3. Panicle branches elongale, slender, spreading, spikelet-bear- 

 ing toward the ends or above the middle; woods, local. 

 May-July. Nodding Fescue [F. nutans Spreng., non 

 Moench] F. obtusa Bieler 



3. Panicle more compact, the few shorter branches spikelet- 



bearing from near the middle, the spikelets somewhat 

 aggregate; woods, rather rare. June. [F. shortii Kunth] 



- F. paradoxa Desv. 



1. Leaves involute, not more than 1 mm wide. 



4. Perennial, tufted; spikelets 4-5-flowered; stamens 3. 



5. Lemmas 4-5 mm long, short-awned, the awns 1.5-3 mm 

 long; fields and waste places, open woods; nat. from Eur. 



May-June. Sheep Fescue -.. F. ovina L. 



5. Lemmas 3 mm long, awnless, or the short mucro 0.5 mm 

 long; lawns and waste places, nat. from Eiu-. Hair 



Fescue F. capillata Lam. 



4. Annual, not tufted; spikelets 5-13-flowered; stamen 1; sandy 



soil. May-June. Slender Fescue [F. tnuila Willd.] 



F. ocfoflora Walt. 



5. Puccinellia Pari. — Alkali Grass 



P. distans (L.) Pari. Railroad yards, Northlake, Cook Co., Glass- 

 man & Thifrrt in 1957; adv. in 111.; native of Eur. June-Oct. 



6. Glyceria R.Br. — Manna Grass 



L Spikelets linear, nearly terete, 1-2 cm long; panicles narrow, erect. 

 2. Lemmas scaberulous over the back on and between the nerves; 

 spikelets 12-30 mm long; first glume 2-3 mm long; lea\es 4-9 

 mm wide; in shallow water or wet soil, locally nearly through- 

 out 111. May-Aug. [G. arkansana Fern.] 



G. septcntrioualis Hitchc. 



2. Lemmas glabrous between the minutely scaberulous nerves; 



spikelets 10-18 mm long; first glume 1.5-2 mm long; leaves 

 2-4 mm wide; in shallow water, or at the edges of streams or 



ponds, n. III., not common G. borealis (Nash) Batch. 



L Spikelets more or less compressed, not more than 8 mm long: pan- 

 icles usually nodding. 



3. Lemmas broadly ovate, evidently but not prominently nerved; 



spikelets 3-4 mm wide; wet ground in the n. part of the state, 



rare; Cook and Peoria counties. June-July 



G. canadensis (Michx.) Trin. 



3. Lemmas elliptical, the nei-ves prominent; spikelets 1-2.5 mm 

 wide. 



4. Spikelets 4-7 mm long. 



5. Stems erect, stout, 1-1.5 m tall; panicle 15-40 cm long, dif- 

 fuse, often purple; leaves 6-15 mm wide; second glume 

 1-nerved, acute; wet ground, n. 111., rare. June-Aug. 

 G. grandis S.Wats. 



