GRASS FAMILY 05 



Kefs. — ECHIXOCHLOA COLONA Link, Hort. Berol. 2: 209. 1833. Panicum eolontun L. Syst. Xat. 

 cd. 10. 2: 870. 17.59; Tburb. in Wats. Bot. C'al. 2: 2fiO. 1880; Abrams, Fl. Los Ang. 24. 1904. 



!l. SETARIA Beauv. Fo-XTAIL. 



Spikcli'ts a.s iu Panicuiu but suljtentled by few or many persi.stent awa-like 

 liriiii.lifs arising from the raehis below the articulation of the spikelets. 

 Annual introduced weeds, or native perennials, with eylindrical spike-like 

 bi'istly panifles. (Latin seta, a l)ristle.) 



t'crennial; panicle slender 3. .S. (/rai'ilis. 



Annual ; panicle stouter. 



Bristles tawnv, 5 or more below each spikelet 1. >S'. (/lauf'a. 



Bristles green or j)urple, 1 to 3 below eaeli spikelet 2. S. viridis. 



1. S. glauca Beauv. Annual : eulnis branching at the base, compressed, 

 iTect or ascending-. 1 to 2 feet high; blades flat, with a spiral twist; panicle 

 dense, oblong, 1 to 3 inches long; bristles 5 or more, 2 to 4 lines long, tawny- 

 yellow ; spikelets 1VL> lines long; fruit undulate-rugose. 



A native of Europe, connnonly introduced into the U. S. A weed in fields 

 and waste places. Rare in California: Riverside. M'ihlcr 10-13. 1127; Sacra- 

 iiietito. ace. Thurber; Fresno, ace. Davy; Los Angeles, ace. Abrams. 



Refs.— SET.VKl.iv GI..\UCA Beauv. Ess. Agrost. 51. 1812; Thurb. in Wats. Bot. (';il. 2; 200. 

 ISSn. Panicum glaucum L. Sp. PI. .57. 1753. Chuetochloa glaiicn Scribn. IT. S. Dept. Agr. 

 Div. Agrost. Bull. 4: 39. 1897; Davy in Jepson, Fl. W. Mid. Cal. 33. 1901; .Abrams, Fl. Los 

 Ang. 25. 1904. 



2. S. viridis Beauv. Annual; culms 1 to 2 feet high; blades flat, not 

 twisted; panicle ol>long-ovate, 1 to 2 inches long; bristles 1 to 3, slender, 3 to 

 () lines long, green or purple; spikelets 1 line long; fruit faintly wrinkled. 



Introduced from Eiu\)pe; a common weed in the Eastern vStates, rare in 

 California (Rialto, Parish 2112. the only specimen seen). 



Refs. — Setaria viridi.s Beauv. Ess. .\grost. "51. 1812. Panicum viride L. Syst. Nat. ed. 

 10. 2: 870. 1759. ChaetocMoa viridis Scribn. U. S. Dept. Agr. Div. Agrost. Bull. 4: 39. 1897. 



3 S. gracilis IT.B.K, Perennial; culms erect, 3 to 4 feet high; blades 

 I'liingMtcd. narr(i\v, 1 to 2 lines wide, flat or folded; panicle slender, linear. 3 

 to 4 inches long, about 11^4 lines thick; bristles 5 to 8. twice as long as spike- 

 let. pale or tawn.v ; spikelets 1 line long; fruit undulate-rugose. 



Fresno. GriffHJix 4717; Riverside. Rccfl 1186; east to Florida and south into 

 ^lexico. 



Refs. — Set.\ria gracilis H. B. K. Nov. Gen. & Sp. 1: 109. ISlfi. Cliactnrhloa fimcilis 

 Scribn. & Merr. U. S. Dept. Agr. Div, Agrost. Bnll. 21: 15. 1900. 



S. 7MBERBIS Roem. & Scliult. (Chaetochloa imhrrhif: Scribn.) is reported from 

 lios Angeles. Santa .\na. and San Bernardino liy Abrams (Fl. Los Ang. 25. 

 1004). [ 



PENXisETr.M vii.i.osuir R. Br. A perennial with culms 1 to 2 feet high, 

 \illous below the panicle, and dense soft feathery terminal spikes, I to 3 

 inclics long; spikelets surrounded by an involucre of several slender plumose 

 bristles about an inch long, the cluster falling from the axis entire. — A native 

 of Abyssinia, cultivated for ornament and occasionall.v escaped from gardens. 

 Santa Barliara Co., Easfirnod in 1008. Chnsf r)60n. 



Leersia orvzoides Swartz. Prodr. 21. 1788; Thui'b. iu Wats. Bot. Cal. 2: 2fi2. 

 ISSO I'hnlnrix ori/zoidcs L. Sji. I'l. .'')."). 17.'i3. Ifomalocpnchruf! oryzoidcs Poll. 

 Tlist. PL Palat. 1 : 52. 177(i. Cach<' Creek. Lake Co.. Bnlandrr (no. 2418 in the 

 Gray Herbarium i. "introduced." San i>ernai-(lino. I'arixh in 1885, "probably 

 intrndnccil. "' 



