86 
FOURTEENTH REPORT. 
Alismaceae (Water-plantain Family). 
Sagittaria latifolia W illd. Arrow Leaf. 423, 510. Besides dominating 
an association, it occurs sparingly in other aquatic associations. 
Hydrochciritaceae (Frog’s Bit Family.) 
Elodea canadensis Michx. Water-Weed. 188. Frequent in nearly all 
of the aquatic associations in Douglas Lake. 
Vallisneria spiralis L. Eel Grass. 257. Rare in some of the aquatic 
associations in Douglas Lake. 
Poaceae (Grass Family) (Gramineae in Gray’s Manual). 
Panicum depauperatum Muhl. 49, 269, 279. Secondary species in aspens. 
Panicum xanthophysum Gray. 3, 96, 267. An abundant secondary 
species in the aspens. 
Panicum boreale Nash. Collected by Dr. H. A. Gleason. 
Panicum sp. A secondary species in the Myrica association. 
Panicum spp. 
Echinochloa crusgalli (L.) Beauv. 500. Very sparingly in cultivated 
ground or along roadsides. 
Setaria viridis (L.) Beauv. Foxtail Grass. 383. As a fire weed on burnt- 
over hardwood land. 
Hierochloe odorata (L.) Wahlenb. Vanilla Grass. 191. Locally dis- 
tributed in a Myrica bog. 
Muhlenbergia sp. 521. In a willow thicket along Maple River. 
Phleum pratense L. Timothy. 8. In the aspens, especially near dwell- 
ings. 
Agrostis alba L. Red Top. 245. Frequent in the aspens. 
Agrostis hyemalis (Walt.) BSP. Hair Grass. 391. As a fireweed of local 
distribution in the aspens. 
Calamagrostis canadensis (Michx.) Beauv. Blue-joint Grass. 224, 388. 
In one station forming a small meadow, but otherwise uncommon. 
Calamagrostis inexpansa Gray. 225. Rare, occurring with the preceding. 
Cinna arundinacea L. Wood Reed Grass. 216. Uncommon in associa- 
tions along the west shore of Douglas Lake. 
Avena sativa L. (Oats). 244. Rare, in the aspens along roads. 
Danthonia spicata (L.) Beauv. Oat Grass. 1. Widespread in its dis- 
tribution in the aspens. 
Spartina michauxiana Hitchc. Slough Grass. 154. On the fringing dune 
in places around Douglas Lake and growing in several of the semi- 
aquatic associations in wet sandy soil. 
Phragmites communis Trin. (Reed). 220. Uncommon, occurring along 
the west shore of Douglas Lake and with Typha in cut-over cedar 
bogs. 
Poa pratensis L. Blue Grass. 7, 143, 157. Widely distributed in the 
aspens and occasional in the roads thru cedar bogs. 
Poa sp. 196. Occasional in the beech-maple woods. 
Glyceria nervata (Willd.) Trin. Fowl Meadow Grass. 118. Uncommon, 
occurring in a cedar bog and in willow thickets. 
Glyceria borealis (Nash) Batchelder. 387. In water in several aquatic 
associations but particularly abundant in the Bessey Creek region. 
Bromus ciliatus L. Brome Grass. 520. Uncommon, in a willow thicket 
along Maple River. 
