112 Rhodora [JUNE 
Rydberg, Mem. N. Y. Bot. Gard. i. 21 (1900); Hitchcock & Chase, 
l. c. 62 (1910), in large part.— Prince Edward Island and Quebec to 
British Columbia, southward to southern New England, Michigan, 
Missouri, etc.; a common plant of waste lands, roadsides, and rail- 
road banks in northern New England and eastern Canada. Probably 
naturalized from the West. 
P. PHILADELPHICUM Bernh. in Trin. Gram. Pan. 216 (1826), pub- 
lished as a variety of P. capillare but with a binomial, validated by 
Nees, Agrost. Bras. 198 (1829); Hitchcock & Chase, l. c. 58 in part 
(1910). P. capillare B. sylvaticum Torr. Fl. No. and Mid. U. S. 149 
(1824). P. porphyrium Trin. ex Nees, l. c. as synonym (1829). P. 
torreyi Fourn. in Hemsl. Biol. Centr. Am. Bot. iii. 497 (1885) and 
Fourn. Mex. Pl. ii. 28 (1886) as to synonym only. P. capillare, var. 
minimum Engelm. in Gattinger, l. c. (1887), perhaps also P. capillare, 
var. minimum Engelm. in Vasey Cat. Grasses U. S. 9 (1885). P. 
minimum (Engelm.) Scribn. & Merr. U. S. Dept. Agric. Div. Agrost. 
Circ. no. 27, 4 (1900).— A southern species, known in New England 
only locally in CoxNEcTICUT: dry open woods, Franklin, September 
12 and 26, 1911, R. W. Woodward. 
P. Tuckermani, n. sp., annuum; culmis plerumque decumbentibus 
numerosis furcatisque rare adscendentibus vel erectis paucis vel 
solitariis simplicibusque 0.3-7 dm. longis papilloso-hispidis foliosis; 
vaginibus papilloso-hispidis, laminis 0.2-2.5 dm. longis 0.1-1 em. 
latis longe acuminatis laxe adscendentibus plus minusve hispidis; 
paniculis plerumque numerosis primariis exsertis late ovoideis 0.2-2 
dm. longis, ramibus laxe divergentibus vel deinde subreflexis, ramulis 
spicato-racemosis spiculis 2-7 breviter pedicellatis vel subsessilibus, 
pulvinis coriaceis glabris; spiculis ovoideis breviter acuminatis 
1.5-2 mm. longis 0.6-0.7 mm. latis, gluma inferiore deltoideo-sub- 
orbicularibus breviter acuminatis 0.6-0.9 mm. longis, superiore 
lemmatibusque sterilibus aequantibus 5-nerviis fructibus paullo 
superantibus. 
Annual; culms usually decumbent and very numerous and forking, 
sometimes ascending or erect and few or solitary and simple, 0.3-7 dm. 
long, papillose-hispid, leafy throughout: sheaths papillose-hispid; 
blades 0.2-2.5 dm. long, 0.1-1 cm. broad, long-acuminate, loosely 
ascending, more or less hispid on both surfaces: panicles usually 
numerous, the primary one exserted, broadly ovoid, 0.2-2 dm. long, 
its branches loosely divergent or finally almost reflexed; the branch- 
lets spicate-racemose, with 2-7 short-pedicelled or subsessile spikelets; 
pulvini coriaceous, glabrous: spikelets ovoid, short-acuminate, 1.5-2 
mm. long, 0.6-0.7 mm. broad; Ist glume deltoid-suborbicular, short- 
acuminate, 0.6-0.9 mm. long; 2d glume and sterile lemma equal, 
5-nerved, barely exceeding the fruit.— Sandy and gravelly shores or 
open soils, Quebec and northern Maine to Connecticut and Wisconsin. 
QuEBEC: damp magnesian gravel and mud about the asbestos quar- 
