No. ."^4. 

 AGROSTIS TENUIS Vascy, I'.iill. Ton-. Cliil.. x. I'l. 



Plant perennial, loosflv tufted, witli slimt luoistucks ami aliiiiidani slcn<lcr 

 libinns ntots. 



Culms viL-vt oi- sdiiicv^ liat uciiicnlatc hclnw. .slcndi r. sniootll. nakt-d ahnxc. ti tu 10 

 inches hi^h. 



Lcaiys from tlie base abundant. Hat nr invohitf, J to •'! inehes long. Leave.s of 

 culm usually -; slieatli.s <dose, smooth, shorter than the interuodes, blades flat or in- 

 volute, lu^arly smooth, h line wide, 1 to - inches lonj;'; lij^nle obtuse, nearly 1 line lon<j. 



Inflorcscvncv an open pyramidal i>auicle, 2 to .'? inches louf;', usually pur]tle thi'ouf;h- 

 out; comuiou axis .scabrous toward the extremity, sli}jhtly flexuous; rays in threes or 

 lives below, in twos or sinjjle above, slender, scabrous, tiexuous. at lenf.^h .spreading, 

 \h inches long or less, divided and si)ikelet- bearing beyond the; middle. 



Spikeletx on pedicels about e(iualing themselves, obovate, less than I line long; 

 em]ity glumes rather uiie(|ua] (second shorter and broadei), ovate-laiiccolatc. acute, 

 convex, smooth or tirst slightly scabrous on the keel above, less than 1 line lone; 

 floral glume oblong, obtuse, hyaline, smooth, obscurely S-nerved, J line lon^: palet 

 wanting: grain oblong, tliickei' below, dull yellow, .\ line long. 



Plate XXXI\'; «, s|)ikelet enlarged 15 times: /*. empt> glumes; c, floi-al ulume. 

 dorsal view: (/. floral glume, side view. 



.Southern ("alifornia ami perhaps extending with varying lorms to \Vashin.i;ton. 



