240 REPORT OF NEW JERSEY STATE MUSEUM. 



c. Basal leaves nearly equalling panicle, upper stem leaves very short, 

 spikelets 5-7 mm. long. P. hrachyphylla, p. 240 



cc. Basal leaves much shorter than panicle. 



d. Spikelets 3 mm. long, culm scabrous below panicle. 



[P. trivialis]^ 



dd. Spikelets 4-5 mm. long, culm smooth. [P. pratensis]t 



aa. Culms not tufted, bluish green, panicle contracted. [P. cot>tpressa]% 



Poa brachyphylla Schultes. Short-leaved Spear Grass. 



Poa brachyphylla Schultes, Mant. II : 304. 1824. n. n. for P. brevifolia 

 Muhl. nee Gaud. [Pennsylvania]. 



This species was only known from Warren and Hunterdon 

 Counties until discovered by Mr. O. H. Brown at Cape May, 

 though I amj inclined to think that the P. alsodes of Dr. Knies- 

 kern's catalogue, which he says occurs on the "borders of woods, 

 not common," belongs here. It was later found in west Jersey 

 by Mr. Long. 



F/.— Mid- April to early May. 



Middle District. — Bordentown. 

 Cape May. — Cape May. 



PANICULARIA Fabricius. 



Key to the Species. 



a. Spikelets not over 7 mm. long. 



b. Panicle dense, club-shaped, spike-like, 75-100 mm. long. 



P. obtusa, p. 241 

 bb. Panicle open, spreading. 



c. Spikelets 3-4 mm. wide, becoming whitish or straw color. 



d. Spikelets larger, 5-10 flowered. P. canadensis, p. 241 



dd. Spikelets smaller, 3-5 flowered. P. laxa, p. 241 



cc. Spikelets less than 2.5 mm. wide. 



d. 3-4 mm. long, purplish, branches of panicle drooping. 



P. nervata, p. 241 

 dd. 4-6 mm. long, green, branches of panicle erect. 



P. grandis, p. 243 

 ddd. 6-7 mm. long, pale green or whitish. P. pallida, p. 242 



aa. Spikelets 12 mm. long or more. 



b. Flowers obtuse. P. septentrionalis, p. 242 



bb. Flowers acute. P. aciitiUora, p. 242 



t Rough Meadow Grass. Introduced in meadows and waste ground. 

 ± Blue Grass. Cultivated for hay and abundantly naturalized. PI. VII., 

 Fig. 2. 



§ Wire Grass. Common in waste ground, fields, etc. 



