548 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM. 



Specimens examined: Cape Horn, Piper 5011; Chcnowith, iS'»A'.s(Zo//2133. 

 Zonal distribution: Humid Transition. 



6. Hieracium scouleri Hook. Fl. Bor. Am. 1: 298. 1834. 



Type locality: "Mouth of the Columbia." Collected by .Scouler. 



Range: British Columbia to Montana and Utah. 



Specimens examined: Nason Creek, Sandberg <& Leiberg 671; Colvillc, LyaU in 1860; 

 Spokane County, C A. Ramm, July, 1883; Suksdorf 385; Mount Carlton, Kreager 244; 

 along the Tukanon River, Lair cfc Hull, July 4, 1892; Pullman, Pij)cr 1614; Bishop's Bar, 

 Snake River, Piper 2885. 



Zonal distribution: Transition. 



The relations of this and the two following need careful held study. The diU'erences are 

 wholly of pubescence, and inasmuch as the different types frequently occur growing together, 

 the character may be only of formal value. 



7. Hieracium griseum Rydberg, Mem. N. Y. Bot. Gard. 1: 465. 1900. 

 Type locality : Jack Creek, Montana. 



Range: .Washington to Montana. 



Specimens examined: ]\Iount Adams, Suksdorf; Lake Park, Piper 2160 in part : between 

 Olympia and Gate City, Heller 4053; mouth of Columbia, Scouler; Wenaclie Mountains, 

 Whited 1187 in part; Cotton 1744; Chelan, Whited 214; Lake Chelan, Lake t& Hull 741; 

 Chelan, Elmer 496. 



Zonal distribution: Transition. 



8. Hieracium. cynoglossoides Arvet-Touv. SpiciL Hier. 20. 1881. 

 Hieracium amplum Greene, Erythea 3: 101. 1895. 



Type locality: "North Western Wyoming." 



Range: British Columbia to Wyoming and OregoiL 



Specimens examined: Whidby Island, Gardner 117; Mount Adams, Suksdorf 2255; 

 Lake Park, Piper 2160 in part; Falcon Valley, Suksdoif 426; Klickitat River, Flett 1085, 

 1077; Peshastin, Sandberg & Leiberg 526; Fish Lake, Dunn, August 8, 1902; Wenache 

 Mountains, Whited 1187 in part; Tieton River, Cotton 440; Loon Lake, Winston, July 20, 

 1897; without locality, Vasey 561, 562; Elma, Heller 4063; Loomis. Elmer 550. 



Zonal distribution: Transition. 



NABALUS. 



1. Nabalus hastata (Less.) Heller, Muhlenbergia 1: 8. 1900. 



Sonchus iMstatus Less. Linnaea 6: 99. 1831. 



Nabalus alatus Hook. Fl. Bor. Am. 1: 294. 1833. 



Prenanthes alata A. Gray, Syn. Fl. 1^: 435. 1884. 



Type locality: " In Unalaschka." 



Range: Alaska to Oregon and Idaho. 



Specimens examined: Cascades, latitude 49°, Lyall in 1859; 01ymj)ic Mountains, Piper 

 in 1890; Snoqualmie Falls, Piper, September, 1902; Monte Cristo, Misses Coffin & Good- 

 speed; Wind River, Flett 1084; Stevens Pass, Whited 1461; Snoqualmie Pass, Piper; 

 without locality, Vasey 558; mouth of Queets River, Conard 325. 



Zonal distribution: Canadian and Iludsonian. 



LACTUCA. 



Pappus brown ; flowers wliitish 1 . L. spicata. 



Pappus white. 



Flowers yellow ; leaves spiny 2. L. scariola. 



Flowers blue; leaves not spiny 3. L. pulchella. 



