198 
52. PHALARIS ARUNDINACEA, Linn.—In wet places. Common 
throughout.—Delaware (Smith’s Cat.); Philadelphia (Barton’s 
F'l.); Chester (Fl. Cestrica); Lancaster; Bucks (Moyer’s Cat.); 
Luzerne (Dudley and Thurston’s Cat.); Huntingdon, Lowrie. 
53. ANTHOXANTHUM OpoRATUM, Linn.—Nat. from Eu.—Common 
throughout.—Delaware (Smith’s Cat.); Chester (Fl. Cestrica); 
Philadelphia; Bucks (Moyer’s Cat.}; Berks; Monroe; Blair, 
Lowrie. 
54. ALOPECURUS GENICULATUS, Linn.—Fug. from Eu.—Philadel- 
phia, Difenbaugh.—On the ballast heaps. 
55. ALOPECURUS GENICULATUS, Linn., var. ARISTULATUS (Michx.), : 
Munro.—Rare and local  Dietneage (Smith’s Cat.); Hunting- 
don; Luzerne, Thurston. 
56. ARISTIDA DICHOTOMA, Linn.—Common throughont.—Dela- 
ware (Smith’s Cat.); Chester; Lancaster; Lebanon; Bucks 
(Moyer’s Cat.); Philadelphia (Barton’s Fl.); Northampton. 
57. ARISTIDA GRACILIS, ELL.—Dry roadsides. Less common than 
the former.—Delaware (Smith’s Cat.); Chester (Fl. Cestrica) ; 
Bucks (Moyer’s Cat.); Northampton; Lancaster; Franklin. 
58. ARISTIDA PURPURASCENS, Poir.—Not common.—Bucks (Moy- 
er’s Cat.); Northampton; Lancaster; York.—On sandy river- 
banks. 
59. STIPA AVENACEA, Linn.—Very rare and local.—Delaware; 
Chester, /. /. Carter; Philadelphia, Diffendaugh. 
60. ORYZOPSIS MELANOCARPA, Muhl.—Frequent. In rocky woods. 
—Bucks (Moyer’s Cat.); Philadelphia, Chas. E. Smith ; Lan- 
caster; Luzerne, Small and Heller; Huntingdon, Lowrie. 
61. ORYZOPSIS ASPERIFOLIA, Michx.—Rare.—Monroe; Luzerne 
Dudley and Thurston's Cat.); Huntingdon; Blair, Lowrie; 
Erie, Guttenberg. 
62. ORYzopPsIS JUNCEA (Michx.) B. S. P-—Very rare. In the moun- 
tain regions.—Monroe, near Naomi Pines; Luzerne, Rothrock. 
63. Mitium erFusum, Linn.—Rare. In the northern counties.— 
Wayne, Garber ; Sullivan, Chas. E. Smith ; Mercer, Garber. 
64. MUHLENBERGIA SOBOLIFERA (Muhl.) Trin.—Frequent through- 
out. In rocky woods.—Delaware (Smith’s Cat.); Chester (Fl. 
Cestrica); Bucks (Moyer’s Cat.); Northampton; Lancaster ; 
Huntingdon, Lowrie. 
