548 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM. 
SPECIMENS EXAMINED: Cape Horn, Piper 5011; Chenowith, Suksdorf 2133. 
ZONAL DISTRIBUTION: Humid Transition. 
6. Hieracium scouleri Hook. FI. Bor. Am. 1: 298. 1834. * 
Type Locauity: “Mouth of the Columbia.” Collected by Scouler. 
RanGE: British Columbia to Montana and Utah. 
SPECIMENS EXAMINED: Nason Creek, Sandberg & Leiberg 671; Colville, Lyall in 1860; 
Spokane County, C. A. Ramm, July, 1883; Suksdorf’ 385; Mount Carlton, Kreager 244; 
along the Tukanon River, Lake & Hull, July 4, 1892; Pullman, Piper 1614; Bishop’s Bar, 
Snake River, Piper 2885. 
ZONAL DISTRIBUTION: Transition. ; 
The relations of this and the two following need careful field study. The differences 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. 
Rance: Washington to Montana. 
SPECIMENS EXAMINED: Mount Adams, Suksdorf; Lake Park, Piper 2160 in part; between 
Olympia and Gate City, Heller 4053; mouth of Columbia, Scouler; Wenache Mountains, 
Whited 1187 in part; Cotton 1744: Chelan, Whited 214; Lake Chelan, Lake & Hull 741; 
Chelan, Elmer 496. 
ZONAL DISTRIBUTION: Transition. 
8. Hieracium cynoglossoides Arvet-Touv. Spicil. Mier. 20. 1881. 
Hieracium amplum Greene, Erythea 3: 101. 1895. 
Type tocauity: ‘North Western Wyoming.” 
Rance: British Columbia to Wyoming and Oregon. 
SPECIMENS EXAMINED: Whidby Island, Gardner 117; Mount Adams, Suksdorf 2255; 
Lake Park, Piper 2160 in part; Falcon Valley, Suksdorf 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, /eller 4063; Loomis, Elmer 550. 
ZONAL DISTRIBUTION: Transition. 
NABALUS. 
1. Nabalus hastata (Less.) Heller, Muhlenbergia 1: 8. 1900. 
Sonchus hastatus Less. Linnaea 6: 99. 1831. 
Nabalus alatus Hook. Fl. Bor. Am. 1: 294. 18338. 
Prenanthes alata A. Gray, Syn. FI. 1°: 435. 1884. 
Type vocauity: “In Unalaschka.” 
Rance: Alaska to Oregon and Idaho. 
SPECIMENS EXAMINED: Cascades, latitude 49°, Lyall in 1859; Olympic 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 Hudsonian. 
LACTUCA. 
Pappus brown; flowers whitish. .........----------+++++-+e2-2-5 25 007- 1. L. spicata. 
Pappus white. 
Flowers yellow; ieaves spiny. ..-------------------++++-++--+-++-+ 2. L. scariola. 
Flowers blue; leaves not spiny ....--------------------+++++-+--- 3. L. pulchella. 
