MICHIGAN ACADEMY OF SCIENCE. 
87 
Agropyron repens (L.) Beauv. Couch Grass. 137. Occasional in the 
aspens. 
Agropyron repens f. glaucum. 138, 236. On a railroad grade and in 
aspens. 
Agropyron sp. 522. In a willow thicket along Maple River. 
Elymus canadensis L. Wild Rye. 446. On the fringing dune along 
Douglas Lake. 
Hystrix patula Moench. Bottle-brush Grass. 477. Local in a beech- 
maple woods along Burt Lake. 
Cyperaceae (Sedge Family). 
Cyperus rivularis Kunth. 270. Rare, in the aspens. 
Cyperus sp. 
Dulichium arundinaceum (L.) Britton. 223. Uncommon, occurring in a 
few of the marsh associations along the west shore of Douglas Lake. 
Eleocharis palustris vigens Bailey. 256. Besides dominating an aquatic 
association it occurs in several of the aquatic and semiaquatic associa- 
tions in standing water. 
Eleocharis sp. Collected- by Miss M. Packer and Miss A. K. Dietz. 
Scirpus americanus Pers. 3-angled Bulrush. 182. Dominates a semi- 
aquatic association and occurs in several aquatic and semiaquatic 
associations. 
Scirpus validus Vahl. Great Bulrush. 189, 504. Dominates an aquatic 
association and occurs in several others. Abundant, especially at 
the mouth of Bessey Creek. 
Scirpus cyperinus pelius Female!. 21?, 242, 516. In moist ground associa- 
tions especially where the original ground cover has been disturbed. 
Eriophorum viridi-carinatum (Engelm.) Fernald. Cotton Grass. 112. 
Occurs sparingly in openings in cedar bogs. 
Eriophorum virginicum L. 436. In Chamaedaphne and cedar bogs. 
Cladium mariscoides (Muhl.) Torr. Twig Rush. 213. Infrequent, domi- 
nating an association along the west shore of Douglas Lake. 
Carex festucacea Schkuhr. Sedge. 2,276. Fairly common in the aspens. 
Carex bebbii Olney. 306. Cedar bog. 
Carex crinita Lam. 127. Cedar bog. 
Carex crinita subsp? 367. In a developing cedar bog. 
Carex lenticularis Michx. 211. In the Myrica association in a bog. 
Carex aurea Nutt. 353. Cedar bog. 
Carex pauciflora Lightf. 37. Sparingly in a Chamaedaphne bog (Silver 
Lake) 
Carex leptalea Wahlenb. 288. Cedar bog. 
Carex umbellata Schkuhr. Rare in the aspens. 
Carex laxiflora Lam. In beech-maple woods, along Burt Lake. 
Carex oederi pumila (Cosson A; Germain) Fernald. 215. Infrequent, in 
Cladium assoc. 
Carex filiformis L. 393. Dominating an aquatic bog association and 
occurring in a few other aquatic associations. 
Carex hystericina Muhl. 119. Cedar bog. 
Carex retrorsa Schwein. 58. Cedar bog. 
Carex lupulina Muhl. 405. In boggy ground in beech-maple woods. 
Carex intumescens Rudge. 149, 386. In cedar bogs and in hardwoods. 
Carex rostrata Stokes. 442. In willow thickets and in cedar bogs. 
