000 rONTRTBUTTONS FROM THE NATIONAL HERBARIUM. 



18. Senecio hydrophiloides Rydhorg, Mom. N. Y. Bot. Gard. 1: 441. 1900.^ 

 Type loc^vlitv: Idaho. 



Range; Washington to Montana. 



Specimens examined: Spokane, Piper, July 2, 1896; Spokane County, Svl-sdorf 37f); 

 Eamm, July, 1883; Clarks Spring.s, Kreager 5.5: Falcon Valley, Svk.ydorf, July 5, 1881. 

 Zonal dkstribution: Arid Transition. 



19. Senecio foetidus Howell, Fl. N. W. Am. 1: 377. 1900. 

 Type locality: Klickitat Valley, Washington. 



Range: Known only from the type locality. 

 Specimen.s examined: Klickitat Valley, Ilomll 224. 



20. Senecio vaseyi Greenman, sp. nov. 



An herbaceous perennial, more or le.ss pubescent throughout with jointed crisp hirsutish 

 hairs, later glabrate; stem erect, 4 to 7 cm. high, simple; leaves elliptic-ovate to lanceolate, 

 5 to 10 cm. long, 1 to 4 cm. broad, acute or obtu.se, entire or inconspicuously denticulate, 

 narrowed at the base into a winged petiole; the upper leaves remote, lanceolate from a 

 sessile subclasping base; inflorescence a simple or compound corymbose cyme; heads 

 medium-sized, 10 to 12 mm. high, discoid: involucre campanulate, sparingly biacteolate; 

 bracts of the involucre 12 to 18, linear-lanceolate, acute, black-tipped; achenes glabrous. 

 Washington: without definite locality, coll. of 1889, G. R. Vasey, no. 568 (hb. Gray); in 

 and near the Cascade Mountains of Kittitas, Chelan, and King counties, coll. of 1889, G. B. 

 Vasey, without number (hi). Piper); Klickitat River, Cascade Mountains, August 3, 1892, 

 L. F. Henderson (hb. Piper); Chewaukum, Whited 2532; Spipen [Naches] River to Colum- 

 bia River, Willces Expedition. California: Mount Shasta, altitude 7,500 feet, August 23, 

 1881, C. G. Pnngh, no. 6 (hi). Gray and hi). Field Mus.); Lassens Peak, coll. of 1875, 

 J. G. Lemmon (hb. Gray). 



21. Senecio exaltatus .\utt. Trans. Am. Phil. Soc. 7: 410. 1841. 



Type locality: "The plains of the Oregon, near the mouth of the Wahlamet." 

 Range: Washington and Idaho to California. 



Specimens examined: Pullman, Piper 1008; upper Atanum River, Henderson 2311. 

 Zonal distribution: Transition. 



21a. Senecio exaltatus ochraceus nom. nov. 



Senecio cordatus Nutt. Trans. Am. Phil. Soc. 7: 411. 1841, not Koch, 1834. 



Senecio In gens ochroleucus K.Gv&y, Syn. M. 1-': 388. 1884, not S. ochroleucns Ilook. & 

 Arn. 1841. 

 . Type locality: "Near the outlet of the Wahlamet." 



Range: British Columbia to California. 



Specimens examined: Mount Rainier, Flett 2167; Klickitat County, Svksdorf 23; 

 Howell in 1879; Goat Mountain, Alien 230; High Prairie, Klickitat County, Siiksdorf 1620; 

 Simcoc Mountains, Houell, June, 1881; Wenache Mountains, Cotton 1196; Ellensburg, 

 Piper, May 20, 1897; without locality, Vasey in 1889. 



Zonal di.stribution: Transition. 



22. Senecio atriapiculatus Rydberg, Mem. N. Y. Bot. Gard. 1: 442. 19f)0. 



Senecio colli nibiairiis Greene, Pittonia 3: 170. 1900, not »S'. renifolivs colundriensis A. Grny . 

 188!. 

 Type locality: None definitel}' given. 

 Range: British Columbia to Washington and Montana. 

 Specimens examined: Mount Carlton, A' /wqrc/' 242; Wenache, W lilted 88. 

 Zonal dlstribittion: Arid Transition. 



23. Senecio condensatus Greene, Pittonia 3: 298. 189S. 



Type locality: "High ridges of the Blue Mountains, Walla Walla Co., Washington." 

 Collected by Piper. 



Specimens examined: Blue Mountains, A/w 2434; Waitsburg, //wnr? , .\pril 17,1897. 



