162 



POACEAE 



16. Calamagrostis inexpansa A. Gray. 

 Narrow-spiked Reed-grass. Fie. 364. 



Mead 

 mountain 

 locality: 



ows and ma 

 meadows o 

 New York 



Calamagrostis inexpansa A. Gray, Gram. & Cyp. 1: no. 20. 1834. 

 Calamagrostis stricta robiista Vasey in Rothr. ; Wheeler, Rep. U. S. 



Surv. 100th Merid. 6: 285. 1878. 

 Calamagrostis hyperborea Lange, Fl. Dan. \V: pi. 2942. f. 1. 1880. 

 Dexeuxia neglecta americana Vasey; Maconn, Cat. Can. PI. 4: 206. 



"1888. 

 Calamagrostis americana Scribn. U. S. Dept. Agr. Div. Agrost. Bull. 



5: 27. 1897. 

 Calamagrostis inexpansa barbulata Kearn. U. S. Dept. Agr. Div. 



Agrost. Bull. 11: 37. 1898. 

 Calamagrostis hvperborea stenodes Kearn. U. S. Dept. Agr. Div. 



Agrost. Bull.' 11: 39. 1898. 

 Calamagrostis hyperborea elongata Kearn. U. S. Dept. Agr. Div. 



Agrost. Bull." 11: 40. 1898. 

 Calamagrostis hvperborea americana Kearn. U. S. Dept. Agr. Div. 



Agrost. Bull." 11: 41. 1898. 



Culms often scabrous below the panicle, 50-120 cin. tall, 

 producing stout rhizomes ; sheaths smooth, or somewhat 

 scabrous, the outer basal ones numerous, marcescent, per- 

 sistent ; blades loosely involute, scabrous, 2-4 mm. wide ; 

 panicle narrow, more or less spikelike, 5-15 cm. long; 

 glumes 3 mm. long, scaberulous ; lemma as long as glumes, 

 scabrous, the callus hairs one-half to three-fourths as long; 

 awn attached about the middle, straight, about as long as 

 glumes ; rudiment .5 mm. long, some of the hairs reaching 

 to tip of lemma. 



rshes throughout British America, southward through Washington and Oregon, and in 

 f the high Sierra Nevada of California to Sequoia National Park. June-Aug. Type 



31. AMMOPHILA Host, Icon. Gram. Austr. 4: 24. pi. 41. 1809. 



Spikelets 1 -flowered, the rachilla disarticulating above the glumes, produced beyond the 

 palea as a short bristle hairy above; glumes about equal, chartaceous ; lemma similar to the 

 glumes, a Httle shorter, slightly emarginate and mucronate between the teeth, the callus 

 bearing a tuft of short hairs ; palea nearly as long as the lemma. Coarse erect perennials 

 with stout creeping rhizomes, long tough involute blades and pale dense spikelike panicles. 

 [Greek, sand-loving.] 



Species 3, on the sandy seacoast of Europe and northern North America. Type species, Arundo 

 arenaria L. 



1. Ammophila arenaria (L.) Link. 

 Beach Grass. Fig. 365. 



Arundo arenaria L. Sp. PI. 82. 1753. 

 Ammophila arenaria Link, Hort. Berol. 1: 105. 1827. 

 Ammophila arundinacea Host, Icon. Gram. Austr. 4: 24. 

 pi. 41. 1809. 



Culms stout, 60-100 cm. tall ; blades elongate, 

 gradually narrowed into an involute point, the ligule 

 1.5-3 cm. long; panicle 10-30 cm. long, dense; glumes 

 as much as 10 mm. long, scabrous. 



Sands of the seacoast; introduced on the Pacific Coast, 

 where it has been used as a sandbinder, at Linnton and 

 Coos Bay, Oregon, and southward to San Francisco. June- 

 Aug. Type locality, European. 



32. LAGURUS L. Sp. PI. 81. 1753 ; Gen. PI. ed. 5. 34. 1754. 



Spikelets 1-flowered, the rachilla disarticulating above the glumes, pilose under the floret, 

 produced beyond the palea as a bristle; glumes equal, thin, 1-nerved, villous, gradually taper- 

 ing into a plumose aristiform point ; lemma shorter than the glumes, thin, glabrous, narrowed 

 above gradually into 2 slender naked awns about as long as the awns of the glumes, bearing 

 on the back above the middle a slender exserted somewhat geniculate dorsal awn ; palea 

 narrow, thin, the 2 keels ending in short awns. An annual grass with dense ovoid or oblong 

 woolly heads. [Greek, hare-taif.] 



Species 1, in the Mediterranean region, and introduced sparingly in California. Tvi)e species, Lagurus 

 ovatits L. 



