PIPER FLORA OF THE STATE OF WASHINGTON. 545 



Type locality: Klickitat County, Washington. 



Range: Washington and Oregon. 



Specimens examined: West Khckitat County, Sulcsdorf 2Z\2. 



TARAXACUM. 



1. Taraxacum taraxacum (L.) Karst. Deutsch. Fl. 1138. 1880-83. Dandelion. 



Leontodon taraxacum L. Sp. PI. 2: 798. 1753. 

 Taraxacum officinale Weber, Prim. Fl. Hols. 56. 1780. 

 Type locality: "Hab. in Europae pascuis." 

 The common dandelion is established as a weed in nearly all parts of the State. 



CREPIS. 



Akenes dilated at the insertion of the pappus; low glaucous plant with 



running rootstocks 1 . C. nana. 



Akenes not dilated at the insertion of the pappus; plants without root- 

 stocks. 



Foliage green, not canescent nor scurfy. 



Stems leafless or nearly so 2. C. runcinata: 



Stems leafy; cauline leaves clasping 3. C. virens. 



Foliage mostly white-pubescent, scurfy. 



Plants 10 to 30 cm. high; involucre with 9 to 24 principal bracts. 



Involucre glandular-hirsute 4 C. occidentalis. 



Involucre hirsute, not glandular. 



Akenes beaked ; pubescence hirsute 5. C. rostrata. 



Akenes not beaked; pubescence tomentose 6. C. glareosa. 



Plants 40 to 60 cm. high ; involucre with 5 to 10 principal bracts. 



Involucre bearing bristle-like appendages on the back . 9. C. barbigera. 



Involucre without bristle-like appendages. 



Bracts of the involucre glabrous 7. C. acuminata. 



Bracts of the involucre canescent 8. C. gracilis. 



1. Crepis nana Richards. Bot. App. Frankl. Journ. ed. 2. 757. 1823. 

 Type locality: "On the Copper Mine River." 



Range: Arctic regions, south to California and Colorado. 



Specimens examined: Olympic Mountains, Flett 810; Mount Adams, SuJcsdorf in 1904. 



Zonal distribution: Arctic. 



2. Crepis runcinata (James) Torr. & Gr. Fl. 2: 487. 1843. 

 Hieracium rwricina^wm James, Long Exped. 1: 453. 1823. 

 Orepidium runcinatum Nutt. Trans. Am. Phil. Soc. 7: 436. 1841. 

 Type locality: "In depressed grassy situations along the Platte." 

 Range: Washington to Saskatchewan, south to Utah and Colorado. 



Specimens examined: Ellensberg, Piper 2665; Whited 695; Toppenisii, Henderson, 

 May 28, 1892; Wilbur, Henderson, in 1889, July 12, 1892; without locality, Vasey; 

 Spraguc, Sandberg & Leiberg 208; Kittitas Valley, Cotton 1217. 



Zonal distribution: Arid Transition. 



3. Crepis virens L. Sp. PI. ed. 2. 2: 1134. 1763. 

 Malacothrix crepoides A. Gray, Pac. R. Rep. 12^: 49. 1860. 

 Crepis cooperi A. Gray, Proc. Am. Acad. 9: 214. 1874. 

 Type locality: "Habitat in Helvetiae, Italiae agris." 



Specimens examined: Olympia, Kincaid, July 4, 1896; Seattle, Piper, July 10, 1895; 

 SuJcsdorf \Q40; Clarke County, iSutscZorf 29; T&coma,, Piper. 

 29418— OG M 35 



