126 Agrostideae Ammophila 



long; lemma thin, glabrous or more or less sparsely scabrous; callus hairs three 



fourths to as long as the lemma 1. C. canadensis. 



Blades involute, except sometimes near the base, usually less than 4 mm wide; panicle 

 narrow, contracted; spikelets usually 3.5-4.2 mm long; lemmas firmer, scabrous all 



over; callus hairs usually two thirds to three fourths as long as the lemma 



2. C. inexpansa. 



1. CalamagTOstis canadensis (Michx.) Beauv. (Inman. Calamagrostis 

 canadensis and some related species. Rhodora 24 : 142-144. 1922) . Blue- 

 joint. Map 202. Frequent in marshes, wet prairies, and mucky places in 

 general in the lake area, but local southward because its habitat is lacking. 

 Where found, it often covers large areas and was formerly the source of 

 "wild hay" in the state and known as little bluestem grass. Since most 

 of the areas of its habitat have been drained and farmed, it has now 

 become infrequent. 



Greenland to Alaska, southw. to Md., N. C. (Roan Mt.), Mo., Kans., 

 and Calif. 



2. Calamagrostis inexpansa Gray. Northern Reedgrass. Map 203. 

 This is an infrequent species in the lake area, where it prefers marly 

 marshes and springy places, although it is sometimes found in habitats 

 associated with pin oak and chokeberry. It is also found in prairie habitats. 

 Stebbins divided the species into varieties and, according to him, our 

 Indiana specimens belong to var. brevior (Vasey) Stebbins. Hitchcock, in 

 his Manual of Grasses, does not divide the species. According to Stebbins, 

 the distribution of the variety is as follows : 



Newf., Que. to B. C, southw. to N. Y., Ind., Minn., Colo., Ariz., and Calif. 



62-249. AMMOPHILA Host 



1. Ammophila breviligulata Fern. (Rhodora 22: 70-71. 1920.) 

 (Ammophila arenaria of American authors, not Link.) Beachgrass. Map 



204. Infrequent on the dunes bordering Lake Michigan. This species is 

 used in this country as a soil binder. 



On dunes from Newf. to N. C, and on the shores of the Great Lakes 

 from Lake Ontario to Lake Superior and Lake Michigan. 



63-250 CALAMOVILFA Hack. 



1. Calamovilfa longifolia (Hook.) Scribn. Longleaf Reedgrass. Map 



205. This species is found in dry, shifting sands on the dunes about Lake 

 Michigan and on a few shifting dunes in Jasper and Newton Counties. 



Mich, to Alberta, southw. to Ind., Colo., and Idaho. 



64-242 AGROSTIS L. Bentgrass 



[Hitchcock. North American species of Agrostis. U. S. Dept. Agric. Bur. 

 Plant Ind. Bull. 68: 1-68. 1905. Piper. The agricultural species of bent 

 grasses. U. S. Dept. of Agric. Bull. 692: 1-26. 1918. Malte. Commercial 

 bent grasses (Agrostis) in Canada. Reprinted from Annual Report for 

 1926, National Museum of Canada, 105-126. 1928.] 



