1916] Fernald & Weatherby,— Puccinellia 17 
riore plerumque inclusa, ramis filiformibus scabris laxe divergentibus 
deinde deflexis; spiculis 5-9 mm. rays 3-5-floris pallide viridibus; 
glumis tenuibus lucidis, inferiore 2-3.5 mm. longa ovata acuta supra 
hyalina minute serrulata nervo medio nae superiore 2.5-4 mm. 
longa 3-nervata nervis evidentibus; lemmatibus 3-4 mm. longis 5- 
nervatis late ovatis acutis eroso-ciliolatis basin — valde pubescenti- 
bus, pilis longis; palea 2.5 mm. longa lanceolata ad apicem latum 
bidentata supra scabra basi ciliata; antheris 1—-1.2 longis; caryopsibus 
1.8—2 mm. longis. 
Loosely caespitose, 1.5-7 dm. high, green: cauline leaves with 
blades 4.6-12 cm. long, involute, flaccid; the basal sheaths more or 
less purplish; Seed 1.7-2.5 mm. long, acute: panicle diffuse, 1-2.5 
dm. long, the base commonly included in the air sheath; branches 
filiform, scabrous, loosely divergent, finally deflexed: spikelets 
mm. long, 3-5-flowered, pale-green: glumes thin, lustrous; the Ist 
2-3.5 mm. long, ovate, acute, hyaline above and minutely serrulate, 
with the midnerve scabrous; 2d 2.5-4 mm. long, 3-nerved; we nerves 
evident: lemmas 3-4 einen long, 5-nerved, broadly ovate, acute, 
erose-ciliolate, strongly pubescent toward the base with long hairs: 
palea 2.5 mm. long, lanceolate, perpirae at the broad apex, pobre 
above, ciliate below: anthers 1-1.2 mm. long: in 1.8-2 mm. 
long.— Sea shores and damp Sento alkaline) soil, Quebec, 
Wyoming and British Columbia.” QuEBEc: brackish gravelly shore, 
Cacouna, August 8, 1902, Fernald (type in Gray Herb.); mouth of 
Riviére du Loup, 1860 60, Chas. Pickering: salt marsh near the wharf, 
Ste. Anne, Cacapenkn County, July 21, 1907, F. F. Forbes; Murray 
River, August 14, 1905, J. Macoun, herb. Geol. Surv. Can. no. 69,217 
(material under no. 69,217 in Gray Herb. from “Vicinity of Cap & 
PAigle” is partly P. lucida, partly P. paupercula, var. alaskana). 
Wyoming: in the margins of ponds, Mammoth Hot Springs, July 
30, 1899, A. & E. Nelson, no. 6.017: damp soil, — n Ranch, 
June 29, 1901, Merrill & Wilcox, no. 63. British COLUMBIA: salt 
marshes, Newcastle Island, Departure Bay, July 10, 1908, J. Macoun, 
herb. Geol. Surv. Can. no. 81,001. 
In some characters related to each of the three species, P. lawren- 
tiana, P. macra and P. airoides. From P. laurentiana and P. airoides 
separated at once by the longer, thin, lustrous lemmas; from the 
former also by its capillary widely divergent and very scabrous 
panicle-branches and the softer greener foliage; from the latter by 
the longer grain and the commonly less exserted panicle. From 
P. macra at once distinguished by the diffuse panicle, pale spikelets, 
involute leaves and Jonger lemmas and achenes. 
++ ++ Lemmas entire or at most remotely few-toothed, not ciliolate. 
