PIPER FLORA OF THE STATE OF WASHINGTON. 597 



2. Senecio harfordii Greenman, sp. nov. 

 Glabrous or essentially so throughout; stem erect or ascending from a slender rootstock, 



2 to 5 dm. high, somewhat glaucous, usually leafy; leaves mostly pinnately divided, with 

 irregularly lobed divisions, and these in turn dentate, including the petiole 4 to 14 cm. 

 long, 1 to 5 cm. broad, thin in texture, and drying pale green; the lowermost leaves often 

 undivided, rotund and crenately lobed; uppermost leaves epetiolate: inflorescence a ter- 

 minal corymbose cyme, few to many- (2 to 30-) headed; heads mostly less than 1 cm. high, 

 including the rays 1.5 to 2 cm. in diameter; involucre shorter than the flowers of the disk; 

 bracts of the involucre about 13, narrowly lanceolate, 5 to 5.5 mm. long, acuminate, acute, 

 glabrose; ray-flowers commonly 5; rays bright yellow; disk flowers 18 to 25; achenes 2.5 to 

 3.5 mm. long, glabrous. 



Oregon: Rocky high lands. Cascade Mountains, May 31, 1869, W. G. W. Harford cfe 

 Geo. W. Dunn 540 (hb. Gray), type; Rooster Rock, June, 1877, J. Howell (hb. Gray, and 

 hb. Field Mus.); rocky banks of Columbia River, western Oregon, June, 1880, Thomas J 

 Howell (hb. Field Mus.); Bonneville, Multnomah County, July 17, 1885, W. N. SuksdorJ 

 572 (hb. Gray); Multnomah Falls, July 27, 1902, E. P. Sheldon 11004 (hb. Gray), and at 

 the same locality, June 25, 1904, C. V. Piper 6212 (hb. Gray). 



Washington: On mountains near the Lower Cascades, May 29, 1886, W.N. Suksdorf 

 (hb. Gray); in woods. Lower Cascades, May 29, 1887, W. N. SuJcsdorJ 872 (hb. Gray); 

 south of Mount Adams, August 4, 1887, J. B. Fleit 1087 (hb. Piper). Differs from S. 

 bolanderi A. Gray in being essentially glabrous throughout, in having somewhat thinner 

 leaf texture, a shorter involucre with fewer involucral bracts and fewer flowers. 



3. Senecio flettii Wiegand, Bull. Torr. Club 26: 137. 1899. 



Type locality: "Near the headwaters of the Quilcene River, Olympic Mountains." 

 Collected by Flett. 



Range: Olympic Mountains, Washington. 



Specimens examined: Olympic Mountains, Flett 801; Elmer 2620; Mount Steele, Piper 

 2196, 929. 



Zonal distribution: Arctic. 



4. Senecio pauciflorus Pursh, Fl. 2: 529. 1814. 

 Type locality: "In Labrador." 



Range: British Columbia and Washington to Labrador. 



Specimens examined: Mount Constitution, Henderson 2312; Big Meadows, Kreager 428* 

 Deming, Flett 852 in part. 

 Zonal distribution: Transition and Canadian. 



4a. Senecio pauciflorus fallax Greenman, subsp. nov. 



Stem erect, about 5 dm. high; lower stem-leaves 3 to 8 cm. long, 1 to 2.5 cm broad, 

 pinnately parted with deep broad sinuses between the lateral divisions, blackish or dark 

 green in the dried state; segments narrowly oblong to subovate, obtusely toothed; upper 

 leaves reduced to mere bracts; inflorescence cymose, few-headed; heads 8 to 10 mm. high, 

 radiate, involucre campanulate; bracts of the involucre 18 to 21, linear acute, 6 to 8 mm. 

 long, slightly purplish-tipped, glabrous, ray-flowers 10 to 12; rays yellow; disk-flowers 50 

 to 60, achenes glabrous. 



Washington: Roadside in partial shade, Deming, Whatcom County, June 30, 1898, J. B. 

 Fieil, no. 852 in part (type in hb. Piper, fragment and tracing in hb Gray). 



The subspecies /a//aa: is readily separated from D. pseudaureus on the characters of the 

 foliage. 



5. Senecio subnudus DC. Prod. 6: 428. 1837. 



Senecio aureus subnudus A. Gray, Syn. Fl. l'^: 391. 1884. 

 Type locality. "Ad Columbia River." Collected by Douglas. 

 Range. Washington and Montana to California. 



