PIPERS-FLORA OF THE STATE OF WASHINGTON, 105 



PANICUM. 



Spikelets in ()ne-sided racemes, awned ; summit of tlie pai('t free LP. crus-gaUi. 



Spikelets in open panicles, awnless; summit of tlie paict inclosed in 

 glume. 



Annual, spikelets pointed. 



Culms 15 to 25 cm. high, slender; spikelets 2.5 mm. long 2. P. harhipulrinatum. 



Culms 40 cm. or more high, stout; spikelets 3.5 mm. long . 3. P. hirficaulum. 

 Perennial, spikelets obtuse. 



Culms stout; spikelets 3 mm. long 4. P. scribnerianuni. 



Culms slender; spikelets 1.5 mm. long n. P. occidettiale. 



1. Panicum crus-galli L. Sp. PI. 1: 56. 1753. B.\rny.\rd gr.\ss. 

 Type locality: "Habitat in Europae et Virginiae cultis." 



R.\nge: A native of Europe widely established as a weed. 



Speclmens exaxMINEd; Seattle, Pi/^fr; Alma, E'/z/ier 530; Xoriii Yakima, Ifa//, August, 

 1895; Parker, A. D. Dunn, August 8, 1901; west Klickitat County, -S'«t«<:/o// 2329; Almota, 

 P//vr, September, 1896; Wawawai,iaA-e 87; Davis Lake, ^T reader 441 ; Marcu^i, Kreager 460. 



2. Panicum barbipulvinatuni Nash, Mem. N. Y. Bot. Gard. 1: 2L 1900. 



Panicum capillare hrevifolium Vasey, U. S. Dept. Agr. Div. Agrost. Bull. 5: 2L 1897, 

 not P. hrevifolium L. 1753. 



Type locality; "Manhattan, on a shaded sand l>ar in the (nillatin Kiver," Montana. 



Range; Washington to Montana. 



Speclmens e.xamined: White River, I'n.ve;/ 66; Chelan, S/rner 484, 848; Kittitas County, 

 Sandberg cf- Leiherg 431; North Yakima, Henderson 2219; Watt, August, 1895; Fort 

 Colville, Lydl in 1860; Watson 445; Whitman County, Lalie & Hull 63; Dry Creek, 

 Whitman County, Vasey 65; Yelm Prairie, Piper in 1S8S. 



Zonal distribution; Upper Sonoran and Transition. 



3. Panicum hirticaulum Presl, Rel. Ilaenk. 1: 308. 1830. 

 Type locality; "Hab. ad Acapulco, Me.xico." 



Range; Washington to Mexico. 



Specimen.s examined; Xear Bingen, S u Isd <>rf 2320. 



Zonal distribution; I'pper Sonoran. 



4. Panicum scribnerianuni Nash, Bull. Torr. Club 22: 421. 1895. 



Panicum scopariurn minor Scribn. Bull. l'ni\'. Tenn. 7: 48. 1894, not Panicum puhescens 

 minus Poir. ; Lam. Encycl. 4: 272. 181(i. 



Type locality; "Middle Tennessee." 



Range: Maine to Washington, south to Alabama and Arizona. 



Specimens examined; AIki Point, Piper 804; Seattle, Smith 804; Tacoma, Flett 11; 

 American Lake, Smith, May, 1890. between Olympia and Gate City, Heller 4058; Cascade 

 Mountains, 49°, Lyall in 1859, Ophir, Elmer 509; Old Fort Colville, Watson 443; Wawawai, 

 Elmer 763; Brodie, June, 1898. 



Zonal distribution: Upper Sonoran and Transition. 



All references of Panicum scopanum Lam. to Washington refer to T^. scribnenanum. 

 With little doubt also the Columbia River specimens referred l)y Hooker to P. rJ*ciV/um Ell. 

 are the same. 



5. Panicum. occidentale Scribn. Ann. Rep. Mo. Bot. Ga'-d. 10: 48. 1899. 

 Panicum pubescens Lam. err. det. Presl, Rel. Haenk. 1:306. 1830 



Type locality: "Hab. in Nootka-Sund," Vancouver Island. 

 Range; British Columbia, Washington, and Idaho. 



Specimens examined; Cascade Mountains, 49°, Lyall in 1859; Woodlawn, Henderson, 

 June 22, 1892; Yelm, Smith, July 20, 1890, Enumclaw, Vasey 72; Montesano, Heller 3978; 



