280 OHIO BIOLOGICAL SURVEY 



5. Poa nemoralis L. Wood Meadow-grass. A perennial grass 

 with slender leafy stems, 1-2 ft. high, and an open spreading panicle. 

 Spikelets 2-5-flowered ; lemma with obscure intermediate nerves, 

 with a few webby hairs at the base. 



Meadows and open woods. June-September. Introduced from 

 Europe. Lake County. 



6. Poa pratensis L. Kentucky Blue-grass. A perennial grass, 

 sending out numerous running rhizomes from the base, with simple 

 erect stems, 1-4 ft. high, with compressed sheaths, and with a pyr- 

 amidal panicle, the spreading or ascending slender branches divided 

 and spikelet-bearing above the middle. Spikelets 3-5-flowered, 

 crowded ; lemma conspicuously webbed at the base, 5-nerved, the 

 marginal nerve and midnerve pubescent below, the intermediate ones 

 naked. 



A very important grass extensively used for pastures and lawns 

 and to some extent for hay. In fields, meadows, and woods. May- 

 August. General and abundant. 



7. Poa autuimnalis Muhl. Flexuous Spear-grass. A perennial 

 grass with erect slender stems, 1-3 ft. high, and a panicle with long, 

 capillary, flexuous, spreading branches bearing a few spikelets near 

 the ends. Spikelets 3-6-flowered, lemma not webby at the base but 

 pubescent below between the strong nerves, the midnerve silky 

 pubescent for three-fourths its length. 



In woods. March-May. Hocking County. 



8. Poa sylvcstris Gr. Sylvan Spear-grass. A perennial grass 

 with simple, slender, erect, slightly flattened stems, 1-3 ft. high, and 

 oblong-pyramidal panicles with spreading ascending or reflexed 

 branches spikelet-bearing at the extremities. Spikelets 2-4-flowered ; 

 lemma webbed at the base, pubescent below, 5-nerved, the midnerve 

 pubescent nearly its entire length, the marginal nerves pubescent 

 below the middle. 



In meadows, woods, and thickets. May-July. Rather general; 

 no specimens from the northwestern counties. 



9. Poa alsodes Gr. Grove Meadow-grass. A perennial grass 

 with simple, erect, slender stems, y 2 -2y 2 ft. high, with long sheaths, 

 the uppermost often sheathing the base of the panicle, and with a 

 panicle of spreading or ascending branches, spikelet-bearing at the 

 ends. Spikelets 2-3-flowered ; lemma webbed at the base, faintly 

 nerved, the midnerve pubescent below. 



Wooded hillsides and thickets. May, June. Seneca, Franklin, 

 Summit, Cuyahoga, Trumbull, Knox. 



10. Poa brachyphylla Schult. Short-leaf Spear-grass. A per- 

 ennial grass with stems 1-3 ft. high from running rhizomes, with 



