(158) 
Type collected by R. S. Williams in low marshy ground 
in river bottoms near White River, Aug. 17, 1899. Also 
secured by Messrs. Onion, Kennicott and Hardisty in 1861- 
62. It has somewhat the appearance of low forms of P. 
paucifiora (Presl) Kuntze, but it is stouter and more leafy, 
and the flowering scales are longer and not truncate at the 
apex as in that species. ‘The deep purple of the flowering 
scales makes a strong contrast with their broad white hyaline 
margins, giving the spikelets a beautiful and striking appear- 
ance. 
Festuca Altaica Trin. Hillsides at Dawson, June 25 and 
July 13, 1899; White Pass, August 26, 1899 (Williams). 
This is closely related to /. scabrella Torr., differing in its 
more acuminate flowering scales, but otherwise strongly re- 
sembling it. Should it prove the same, Torrey’s name must 
be considered a synonym, it having been published several 
years later than that of Trinius. 
Festuca ovina polyphylla Vasey. Skagway (Williams). 
Bromus Pumpellianus Scribn. Dawson (Williams); Ft. 
Selkirk (Tarleton). 
Bromus racemosus LL. Dawson. Introduced (Williams). 
Agropyron Richardsont Schrad. Dawson (Williams). 
Agropyron spicatum tenuispicum (S. & S.) Rydberg. 
Dawson (Williams). 
Agropyron tenerum Vasey. River bank opposite Dawson 
(Williams). 
Hordeum nodosum L.. Dawson. Introduced (Williams). 
Elymus arenarius L. Skagway (Williams). 
Family CyPERACEAE. 
Eriophorum polystachyon L. Mouth of Klondike (Wil- 
liams). 
Eriophorum vaginatum L. Dawson; below White Horse 
Rapids; Klondike River Bottom (Williams); Five-finger 
Rapids (Tarleton). 
Carex vesicarta L. Dawson; Klondike River Bottom 
(Williams). 
