AtiKoSTIDK.K. 808 



Vonnont, (\ /•:. Fn.ron 11, l-»; Miclii<,'iiii, /Iral Hi), (1nr^- ^O'i, 

 fiWi', Ciiiiiulii, Mtimux: MiiiTiosotii, l/i)/:iiit/rt' : Moiitanii. Atiilirsan 

 yi, 4-.». W illiiiiiiti; Wvomiii",', /liijl'iim (' l(».*t; Dakota, /hijf'ri/; I'tiih, 

 Jdtirs 114.5; \\ iisliington, StiinHtvru '.Vi.b, 'o',\b, Suk/idn-f \i)'i\\ 

 Ort'j.'<)ii. Hiiiirll. 



Coiict'i'iiin^ tlif aliovf Hiiccii'.s uiid its rtynoiiyins, see liot. (laz. 

 li:lT') (iSSC). for notes by F. \.. Scrihncr. 



C'uiuulu, New Kn^iand to Oregon ami Calironiia. 



\m. crassiglumis ('riiurb.). ('(i/dnHii/msfis rnis.«i(/J nun's 'riiurh. 

 S. Wats. Mot. Calif. 2: '.'81 (1880). Jh'i/ni.n'n (■ni.s.sif//iiNiis Vasey, 

 Cut. (in r. S. 50 (188r)). 



Leaves of sterile slioots as long as the culm, wiiicli is '.'O-IJO, em. 

 liigli; blades ol" the culm 7-10 em. long, rigid, reaching to the 

 imnicle. I'anicle dense, 4-G cm. long. 



California (Mendocino County), lUthimlcr 4T(!(). 



\i\\\ confinis (Willd.). Anoido conjinis \\"\W\, Vawww. \:Vn 

 (ISOii). ( 'alaiiKKjrosfis niiijinis Nutt. (ieu. 1:4; (1818). J)e//ciixiu{?) 

 ciDiJinls Kuntli, Rev. Gram. 1:70 (1835). 



Culms more slender than the species; panicle less compact; hairs 

 exceeding the lloret a little. 



New York to Minnesota. 



Vur. gracilis Scribn. Coult. Rot. Craz. 11: 175 (188(5). 



Cidms 2-3 cm. high; rudiment 0.4 cm. long, hairs as long as 

 the lloret. 



Yellowstone Park. Tirvvdji 58, teste Scrihncr. 



(i!». (141). Ammophila Host. Cram. Austr. 4:34, t. Jfl (1809). 

 Pmmuia Heauv. vVgrost. 143 (1812). 



Si)ikelets 1-llowered in large spikelike panicles, tlio rachilla 

 articulate above the outer glumes, bearing a tuft of liairs around 

 the floral glume, produced beyond it in a small bristlelike rudi- 

 ment. Empty glumes persistent, chartaceous, thick, lanceolate, 

 acute, compressed-keeled; floral glume 5-nerved, similar in texture 

 and about the same length, the apex dentate or sometimes mucro- 

 nate; palea about as long as, its glume, of like texture, 2-keeled, 

 2-toothed, sulcate between the keels. Stamens 3. Styles distinct. 

 Grain obovoid, enclosed but not adherent. 



