No. 04. 

 BROMUS ORCUTTIANUS N'ascy, Hot. (iii/. x. 'SS.i (issn). 



I'htitl iioreiiiiial, loos(!ly tufted. 



CkIiiis I'lt'ct, tliickeiieil at the base, liiiel.v piibe.sceiil or nearly siiioolli, lealy tu 

 the iniihlh! or above, 2 to -4 feet tall. 



Lid res from the base iiniuerous, witli very sliort sheaths aiul Hat blades, 4 to S inches 

 lonjj: leaves of the ciihu 3 or 4; sheaths close, half open at the throat, striate, pubes- 

 cent or nearly smooth, shorter than the long internodes; blades tlat, smooth or the 

 iil)per ones scabrous, li to 4 lines wide, 3 to r> inches lonj?: ligule rather t1ii<k. less than 

 I \\m- long. 



Iiifloresveiice an erect panicle 4 to 6 inches long; rays 2 to 4 at each of the 5 or (i 

 nodes, erect or slightly spreading, or rigidly horizontal, and even dellexed at maturity, 

 unc(]ual, •'{ indies long or less, slightly scabrid, bearing appressed spikelets on pedicels 

 mostly shorter than themselves. 



Sjilhlrfs 1 to IS inches long, with .'! to (> florets and an awiied rudiment, erect and 

 imbricated, or at length loose and divergent; first emi)ty glumi? iiai rowly ovate, acute, 

 carinate, hispid on the keel, 1-nerved or obscurely 3-nerved, 2A to .'5i lines long;, second 

 empty glume lance oblong, acute, or often iimcronate, slightly hisi)id or thinly ]ml)es- 

 ccnt, ]»romiMently .'! nerved, .'5 to 4 lines long; tloral glume lance(>bh)ng, subacute or 

 rounded at the narrow apex, hispidulous, r>- to Tnerved, 4i to (> lines long; awn 

 arising at the apex or just below, hisjiid, 2 to 4 lines long; i)alet lanceolate, rounded 

 oi- nearly acute at the apex, ciliate on the keels, half a line shorter than the glume; 

 stamens 3, with yellow anthers 2 lill(^s long; ovary i)ubescent; grain linear, with a 

 stiallow channel on one side, yellow or brown, senutranslucent, 4 to 5 lines hmg, 

 including the tuft of white hairs at the rounded apex; lodicules 2, ^ line long; inter- 

 node of rMcliilla slender, ]iut)esceiit, 1 to l.\ lines long. 



Plate X(JIV; 1, plant at flowering time; 2, panicle, at maturity; a, spikelet; b, 

 empty glumes; c, lioral glume, side view and dorsal view; d, i)alet; c, lodicules and 

 grain. 



Southern California to Washington. The sjjecimens from dili'erent regions vary 

 con.siderably in the jjubescence and in the rigidity of the panicle. 



