POACEAE III 



Pa. Monroe, Philadelphia, Bucks, Delaware and Chester counties. 

 Tertiary, not on Beacon Hill, rare off it: Cretaceous, common: 

 Older Formations, rare and scattered. 123-220 days. Sea level- 

 2,100 ft. 



24. P. ensifolium Baldw. In moist places, pine-barrens: N. J. 



to Fla. and Miss. 



N. J. Common in the pine-barrens, also at Lawnside, Camden Co., 



and Cape May.* 



Tertiary, common on Beacon Hill, rare off it: Cretaceous, very 

 rare:* Older Formations, 0. 159-220 days. About sea level. 



25. P. dichotomum L. (P. barbulatum Michx. not of many Am. 



Auct.). In woodlands and thickets: N. B. to Mich., Fla. 

 and Tex. 



Rare in the pine-barrens and the southern part of the range 

 generally, increasing and common northward. 



26. P. lucidum Ashe. Sphagnum bogs and wet soil: N. Y. and 



N. J. to Fla. and Tex. 



N. Y. On the coastal plain in western L. I. 



N. J. Throughout the coastal plain, specially common in the pine- 

 barrens, unknown elsewhere. 

 Tertiary, common: Cretaceous, less common: Older Formations, 



rare. 168-220 days. About sea level. 



27. P. coerulescens Hack. Moist places: N. J. to Fla., and Miss. 



Known in our area only from Cape May Co., N. J. 



28. P. yadkinense Ashe. Moist woods and thickets: Pa. to Ga., 



111. and La. 



Known in our area only from near Sellersville, Bucks Co., Pa., 

 a region underlaid by Mesozoic red sandstone, south of the moraine, 

 with an elevation of about 200 ft. and a growing season of 176 days; 

 Reported also from near Easton, Pa. 



29. P. microcarpon Michx. (P. barbulatum Am. Auth. not of 



Michx.). In moist soil: Mass. to Mo., south to Fla. and 

 Tex. 



Throughout the range, except the pine-barrens, there rare. 



30. P. annulum Ashe. In dry rocky woods: N. J. and Pa. to Ga., 



Mo. and Miss. 



* See Introduction paragraph 29. 



