294 I'OACE.E. 



larorate, (locnrrent, about 2 mm. long; blados flat, involute at the 

 uptsx, rtcabrid aljovo, i-'i cm. Ion;;, about 1 mm. wido. I'anirlo 

 nuu'li t'xsorted, few-llowi'iTil, spikcicts scattered, interrupted Ijclow, 

 anil on plants of medium hei^xlil, .j-7 cm. Inn;,', about :!inm. <liani. ; 

 ray.>< erect, mostly in })airs, some (»f the lower '^-'.\ cm. Ion;;, llowcr- 

 bearin;; nearly to the base. Empty ;,'lumes subecpuil. the lower a 

 little the shorter, meml)ranous, l)roadly ovale, 1 -nerved, obtuse, 

 erose ormucronato, a little less than 1 mm. Ion;;, lioret with acallus 

 at the base, minutely pubescent; tl(»ral ;;Ium(! ovate, acute, mucro- 

 natc, :)-nerved, H mm. ion;;: palea mend)ranous, broadly oval, 

 scarcely acute when si)read, a little shorter than its glume. 



California, Jours 2401; Oregon, llowell. 



Oregon and Caliroriiia. 



18. S. auriculatus Vasey, Contrib. U. S. Nat. Herb. 3:64 

 (1S92). S. (fspt'n'/o/in.s xar. breri/oliits Xiiscy, Contrib. U. 8. Nat. 

 Herb. 1:50 (l.S!M)). 



Culms much branched below, 15-25 cm. high, with short creep- 

 ing rootstocks, nodes of the branches short and numerous. Leaves 

 glaucous; sheaths scabrous or smooth, longer than the short inter- 

 luxles; ligule lacerate, 1.5 mm. long; blades of the sterile shoots 

 scabrous, Hat, subarticulate, 1-3 cm. long, 2 mm. wide, those of 

 the culm 3-6 cm. long. Panicle mostly included at the base, thiu, 

 ovoid, 7-10 cm. long; rays single or in pairs, scabrous, some of them 

 rellexed, bearing single spikelets at the ends of the stiff slender 

 bramdies. Si)ikelets purplish; empty glumes 1-nerved, subequal, 

 oval, nearly 1 mm. long; floral glume broadly oval, obtuse, 3-nerved, 

 2 mm. long; palea oval, as long as its glume. Vasey says: "^S*. 

 asperifoUns var. hrcvifoUus of contributors." Perhaps a variety of 

 >S'. asperifoUns. 



Texas, NeaUey for Nat. Museum. 



19. S. confusus Vasey, Bull. Torr. Club, 15:293 (1888). *S'. 

 ramulosus of authors, not of Kunth. 



A very slender tufted annual, much branched below, 8-20 cm. 

 high. Sheaths loose, longer than the internodes; ligule thin, 1.5-2 

 mm. long; blades scabrid above, flat, coiuluplicate or involute, 2-4 

 cm. long, 1-5 mm. wide. Panicle exserted or partially included, 



