GRASS FAMILY 



139 



4. Muhlenbergia repens (Presl.) Hitchc. 



Aparejo Grass, Creeping" ^fuhlenbergia. 

 Fig. 30L 



Sporobolus rctcns Presl, Rel. Haenk. 1: 241. 1830. ^ 



Muhlenbergia repens Hitchc. in Jepson Fl. Calif. 1: 111. 1912. ^ 



Perennial from woody creeping rhizomes ; culms 

 slender, wiry, freely branching, widely spreading or 

 creeping, 15-40 cm. long; flower-bearing branches 

 ascending; blades numerous, narrow, involute, arcuate, 

 1-3 cm. long; panicles narrow, interrupted, few- 

 flowered, 1-2.5 cm. long; glumes ovate, acute, 1.5 mm. 

 long, smooth ; lemma exceeding the glumes, about 

 2 mm. long, smooth or sparsely pubescent, acute or 

 mucronate. 



Deserts of San Bernardino (Upland) and Inyo Counties, to 

 Arizona and northern Mexico. January. Type locality : Mexico. 



5. Muhlenbergia racemosa (Michx.) B. S. P. 

 Wild Timothy, Satin-grass. Fig. 302. 



Agrostis racemosa Michx. Fl. Bor. Am. 1: 53. 1803. 



Muhlenbergia glomerata Trin. Gram. Unifl. 191. pi. 5. f. 10. 

 1824. 



Muhlenbergia racemosa B. S. P. Prel. Cat. N. Y. 67. 1888. 



Perennial from stout creeping scaly rhizomes ; 



culms erect or reclining 50-100 cm. tall, or even 



more, slightly roughened below the nodes, simple or 



sparingly branched; sheaths smooth, keeled; ligule 



about 1 mm. long, slightly ciliate ; blades flat, mostly 



appressed, scabrous, 5-10 cm. long, 2-5 mm. wide; 



panicle narrow, condensed or lobed, 3-10 cm. long, 



made up of several oblong dense clusters ; glumes 



narrow, aristate, about equal, 4-6 mm. long, exceed 



ing the acute lemma. 



Moist meadows and low ground. Transition Zone; Wash 

 ington to northern California, east across the continent, south 

 to Xew ^Mexico. July-Sept. Type locality: along the Missis- 

 sii)pi. 



6. Muhlenbergia lemmoni Scribn. 

 Lemnion's Muhlenbergia. Fig. 303. 



Muhlenbergia lemmoni Scribn. Contr. U. S. Nat. Herb. 1: 

 56. 1890. 



Perennial, from a creeping branching woody 

 rhizome; culms slender, wiry, erect or ascending, 30- 

 60 cm. tall ; blades flat or somewhat involute, 1-2 mm. 

 wide; panicles narrow, interrupted, the branches 

 short ; glumes narrow, gradually acuminate, including 

 the awn about 3 mm. long ; lemma 3 mm. long, 

 acuminate into an awn as much as 6 nnn. long, tlie 

 callus hairs rather sparse, about half as long as the 

 body of the lemma. 



Deserts, from southern California (Jamacha) to Texas and 

 northern Mexico. July. Type locality: Arizona. 



