GRASS FAMILY. 47 



The type is Bolander's no. 2274 from the Oakland Hills and the 

 species does not appear to have heen re-collected. It resembles C. 

 Aleutica, but is said to be at once distinguishable by the short and 

 narrow involute leaves and by the position of the awn. 



5. C. fasciculata Kearney. A perennial "bunch-grass;" densely 

 tufted from a scaly, stoloniferous rootstock; stems 2 to 2^^ ft. high, 

 stout, erect from a decumbent base, very leafy and densely clothed 

 with the old, dry sheaths; the lowest sheaths bearded at the junction 

 with the blade; ligule IJ lines long, serrate; blade about 1 line wide, 

 flat or becoming involute, minutely scabrid, uppermost cauline | to 

 IJ in. long, lowest cauline 5 to 6 in., those of the sterile shoots 6 to 10 

 in. long; panicle shortly exserted, narrowly lanceolate or almost 

 linear, 2 to 4 in. long, 3 to 4 lines wide, interrupted below, dense and 

 lobed above; branches short, appressed, densely-flowered to the base; 

 longest J to J in. long; spikelets f line long; bracts subequal, acute, 

 scabrous; the upper the longer, about 2J lines long; prolongation ot 

 the rachilla minute, naked; bractlet exceeding the bracts, 3 lines long, 

 prominently nerved; awn arising about f from the base, IJ lines long, 

 shortly exceeding the bractlet; palea about 2 lines long. 



Marin Co. northward: plentiful along the trail from Mill Valley 

 Cascades to the reservoir, above the redwoods. Aug.-Sept. 



6. C. rubescens Buckl., which is described by Kearney as differ- 

 ing from C. fasciculata in its usually elongated, not rigid, leaves 

 which rarely form a, dense tuft, and further by its narrow, spiciform, 

 usually red-purple panicle, is recorded by him as having been 

 collected on Mt. Tamalpais by Blankinship. 



15. AMMOPHILA Host. 



Tall perennial, with long, rigid leaves. Panicle large, contracted. 

 Spikelets large, 1-flowered, much compressed laterally. Bracts per- 

 sistent, scarcely exceeding the bractlets, sub-equal, rigid, thick, com- 

 pressed-keeled, lanceolate, sub-acute, awnless; lower 1, upper 3-nerved. 

 Eachilla terminating in a point beyond the insertion of the bractlet. 

 Bractlet and palea similar in texture and about as long as the bracts; 

 bractlet 5-nerved, minutely awned, with an oblique callus and a short 

 tuft of silky hairs at base; awn minute, sub-terminal; palea 2-keeled, 

 sulcate between the keels, 2-toothed. Scales very acuminate. 

 Stamens 3. Ovary glabrous; styles short, distinct. (Greek ammos, 

 sand, and philia, affection, from its preference for sand-dunes.) 



1. A. arenaria (L.) I/ink. Beach-grass. Eootstock widely 

 creeping; stems 2 to 4 ft. high; sheaths long; ligule very long, 2-fid, 

 torn; blades convolute and polished without, scabrid and glaucous 

 within; panicle spike-like, sub-cylindric-fusiform , 3 to 6 in. long, 

 straight, broadest and sometimes lobed at the base, white or yellowish; 

 pedicels scabrous; spikelets erect, 5 to 6 lines long; bracts J to J in. 

 long; keel scabrid; hairs and prolongation of the rachilla less than J 

 as long as the spikelet; anthers J in. long, linear, yellow. — (A. 

 arundinacea Host.) 



