MANUAL OF THE GRASSES OF THE UNITED STATES 



121 



3.5 to 4.5 mm. long, acute, webbed 

 at base, pubescent on the keel and 

 marginal nerves, the intermediate 

 nerves distinct. % — Moist woods, 

 Ohio to Minnesota, Nebraska, and 

 Missouri. 



33. Poa paucispicula Scribn. and 

 Merr. (Fig. 147.) Culms tufted, leafy, 

 rather lax, 10 to 30 cm. tall, the base 

 often decumbent; blades 1 to 2 mm. 

 wide; panicle lax, few-flowered, 2 to 

 8 cm. long, the branches in pairs or 

 solitary, naked below ; spikelets ovate, 

 purple, 4 to 6 mm. long, 2- to 5- 

 flowered; glumes rather broad, acute, 

 3 to 4 mm. long; lemmas 3 to 4 mm. 

 long, oblong, obtuse, webbed at base 

 (the web sometimes scant), pubescent 

 on the keel and marginal nerves 

 below. % — Rocky slopes, Alaska 

 to Washington (alpine slopes, Mount 

 Rainier, Mount Baker); Glacier Na- 

 tional Park, Mont. More leafy than 

 P. leptocoma, more tufted, the panicle 

 branches not so long; spikelets broader. 



34. Poa leptocoma Trin. Bog blue- 

 grass. (Fig. 148.) Culms slender, 

 solitary, or few in a tuft, 20 to 50 

 cm. tall, often decumbent at base; 

 sheaths usually slightly scabrous; 

 ligule acute, the uppermost 3 to 4 

 mm. long; blades short, lax, mostly 

 2 to 4 mm. wide; panicle nodding, 

 delicate, few-flowered, the branches 

 capillary, ascending or spreading, 

 subflexuous, the lower mostly in 

 pairs; spikelets narrow, 2- to 4- 

 flowered; glumes narrow, acuminate; 

 lemmas 3.5 to 4.5 mm. long, acumi- 

 nate, webbed at base, pubescent on 

 the keel and marginal nerves or 

 sometimes nearly glabrous, the inter- 

 mediate nerves distinct. % — Bogs, 

 Alaska, south in the mountains to 

 northern New Mexico, Colorado, and 

 California (Mount Dana). 



35. Poa paludigena Fern, and 

 Wieg. (Fig. 149.) Culms slender, 

 solitary or in small tufts, 15 to 70 

 cm. tall; sheaths minutely scabrous; 

 ligule short, truncate, the uppermost 

 as much as 1.5 mm. long; blades 

 rather lax, mostly erect, 0.3 to 2 mm. 



wide; panicle loose and open, mostly 

 5 to 10 cm. long, the branches long 

 and slender, distant, the lower mostly 

 in twos, spikelet-bearing above the 

 middle; spikelets mostly 4 to 5 mm. 

 long, narrow, 2- to 5-flowered; lem- 

 mas 2.5 to 3.5 mm. long, webbed at 

 base with a few long hairs, the keel 



Figure 145. — Poa reflexa. Panicle, X 1 ; floret, X 10. 

 (Clokey 11330, Colo.) 



and lateral nerves pubescent on the 

 lower half or two-thirds, the inter- 

 mediate nerves glabrous, obscure. 

 % — Bogs and springy places, New 

 York and Pennsylvania to Illinois 

 and Wisconsin. 



