42 FLORA OF PHILADE-LPHIA. 



Gloucester— Woodbury (C). Atlantic— Hammonton (C). 

 New Castle— Col. Andrews, frequent. ... 



23. BBACHYELYTBUM Beauv. 

 1. Brachyelytrum erectum (Schreb.) Beauv. M. p.. 10.1. Moist places. 

 Summer. ' . ' 



, 24. HELEOCHLOA Host. . 

 1. Heleochloa schoenoides (L.) Host. Bush Cat-tail Grass. M. p. 102. 

 Waste places. Summer^ 

 Philadelphia— 2 miles, wes>t, of Chestnut Hill (VP.}. Sucks— Bensalem, 

 Mart. (Ft.). Detatoare— -Haverford, near Friends' Meeting-house, Dr. 

 Geo. 'Smith (Fu.).. Lancaster — Columbia and Lancaster (P.). 

 Camden— BallaW (He.) '(Te.). ' Mercer— I'renton (CO. 1 

 New Castle— St. Georges (Pr.), Bush's Wharf, Tatnall; Odessa, New 

 Castle, Newark, Commons; Christiana Aye. 



25. PHLEUM L. 

 1. Phleum pratense L. Timothy. M. p. 102. Fields and meadows. 

 Summer. 



26. ALOPECUEUS L. Fox-tail. 



Outer scales of the spikelet united for one-half their length, smooth to hispid 



on the keel. ''■ ■■.'•' ■' . 1. A. agrestis. 



Outer scales of the spikelet united for one-quarter their length or less, long- 

 ciliate on the keel. 

 Scales 2.-2.5 mm. in length. 2. A: geniculatus. 



Scales 4-6 mm. in 'length. . 3. A. pratensis. 



1. Alopectjrus agrestis L. M. p. 103. Ballast. Summer. 



Philadelphia— Ballast (P. ) . 



Camden— Ballast. . I 



2. Alopecurus geniculatus L. M. p. 103. Moist meadows. Summer. 



Philadelphia— Below Old Navy Yard, 92d Street Station (St.). Dela- 

 ware— Tinicum, Dr. Geo. Smith (Fu.). 



Camden — Petty's Island, Camden (C). Gloucester— Swedesboro (Li.). 

 New Castle— Oherry Island near Edgemoor, Commons; Bush's, Tatnall. 



3. Alopecurus pratensis L. M. p. 103. Meadows. Summer. 



Philadelphia— Philadelphia, Mart. (B. O). 

 New Castle— Wawaset Nurseries. 



27. SPOEOBOLUS E. Br. Drop-seed, Bush-grass. 



Panicle contracted, spike-like. 



Spikelets more than 3.5 mm. in length. 



Panicle terminal; upper sheaths 7.5 cm. long or more. . 



Flowering scale appressed-pubescent below, with long hairs. 



1. S. asper. 

 Flowering scale glabrous. 2. S. longifolius. 



Panicles terminal and lateral; sheaths 3.75 cm. long or less. 



3. 8. vaginaeflorus. 

 Spikelets 3 mm. long or less. 4. s. Indicus. 



Panicle open, its branches more or less spreading, at least at, maturity. 

 First scale one-half as long as the second or less. 5. S. heterolepis. 



