GRASS FAMILY 



239 



1. Pholiurus incurvus (L.) Schinz & Thell. 

 Sickle Grass. Fig. 565. 



Aegilops incurza L. Sp. PI. 1051. 1753. 

 Aegilops incurvata L. Sp. PL ed. 2. 2: 1490. 1763. 

 Lepttirus inciirvatus Trin. Fund. Agrost. 123. 1820. 

 Lepturus incurvus Druce List Brit. PI. 85. 1908. 

 Pholiurus incurvatus Hitch. U. S. Dept. Agr. Bull. 772: 



106. 1920. 

 Pholiurus incur-rus Schinz & Thell. Viertel. Naturf. 



Gesellsch. Ziiruch 66: 265. 1921. 



Culms tufted, decumbent at base, 10-20 cm. 

 tall; blades short and narrow; spike 7-10 cm. 

 long, cylindric, curved ; spikelets 7 mm. long, 

 pointed. 



Mud flats and salt marshes, Marin County, California, 

 to San Diego; ballast near Portland, Oregon; adventive 

 on ballast on the Atlantic Coast. Apr.-June. Type lo- 

 cality. European. 



73. SCRIBNERIA Hack. Bot. Gaz. 11: 105. 1886. 



Spikelets 1-flowered, solitary, sessile, placed with the floret lateral to the continuous 

 rachis, the rachilla disarticulating above the glumes, prolonged behind the floret as a minute 

 stipe ; glumes equal, narrow, firm, acute, keeled on the outer nerves, the first 2-neryed ; lemma 

 shorter than the glumes, membranous, obscurely nerved, the apex minutely bifid, awned 

 between the teeth, the callus hairy ; palea about as long as the lemma. A low slender annual 

 with short narrow blades and slender spikes. [Named for Prof. F. Lamson-Scribner, the 

 eminent American agrostologist.] 



Species 1, Pacific Coast. Type species, Lepturus bolandcri Thurb. 



1. Scribneria bolanderi (Thurb.) Hack. 

 Scribner Grass. Fig. 566. 



Lepturus bolanderi Thurb. Proc. Am. Acad. 7: 401. 1868. 

 Scribneria bolanderi Hack. Bot. Gaz. 11: 105. pi. 5. 1886. 



Culms 7-30 cm. tall, tufted, erect or ascend- 

 ing; spike slender, about 1 mm. thick, the joints 

 4-6 mm. long ; awn of the lemma not much ex- 

 ceeding the glumes. 



Sandy or sterile ground, in the mountains, Washing- 

 ton (west Klickitat County, Suksdorf) to California 

 (middle Sierra Nevada); rare. May-June. Type lo- 

 cality: Russian River Valley, California. 



74. AGROPYRON Gaertn. Nov. Comm. Acad. Sci. Petrop. 14: 539. 



pi. 19. f. 4. 1770. 



Spikelets several-flowered, solitary (rarely in pairs), sessile, placed flatwise at each 

 joint of a continuous (rarely disarticulating) rachis, the rachilla disarticulating above the 

 glume and between the florets; glumes 2, equal, firm, several-nerved, usually shorter than 

 the first lemma, acute or awned, rarely obtuse or notched; lemmas convex on the back, 

 rather firm, 5 to 7-nerved, usually acute or awned from the apex; palea shorter than the 

 lemma. Perennials or sometimes annuals, often with creeping rhizomes, with usually 

 erect culms, and green or purplish usually erect spikes. [Greek, field-wheat.] 



Species about 60 in the temperate regions of both hemispheres. Type species, Agropyron triticeum 

 Gaertn. 



