362 COMPOSITAE 
36. Erigeron piperianus Cronquist. Piper’s Daisy. Fig. 5617. 
Erigeron curvifolius Piper, Bull. Torrey Club 27: note 1900, pro max. part., excl.-type. 
Erigeron piperianus gt a Brittonia 6: 197. 19 
nd basal, linear or ax and usually curv pt lon d1.5 de, hispid 
ciliat gins, pile ially elow, a appre ssed- hai he e, the lower with con- 
spicuously enlarged, wh ph iadure’ d base; heads ni or few, small, t i mm. wide; 
in m gh, spreading-hirsute with long white hair , the phyllaries subequal or imbri- 
ate, Loin or greenish, with darker thickened midrib, acuminate at the tip; rays 0, yellow 
ong, .8 mm. wide; disk-corollas mostly 2.8-4.2 mm. long; pappus of 15-25 ceisie 
and often some short outer setae ; achenes 2- nerved. 
open places, often ng sagebrush, Arid Transition Zone; Columbia River plains of Washington from 
Douglas Pe Ay to Benton Somete Type Secular: cneide oe Soap Lake in the Grand Co ulee, Grant County, Wash- 
In 
37. Erigeron blodmeri A. Gray. Bloomer’s Daisy. Fig. 5618. 
Erigeron bloomeri A. Gray, Proc. Amer. Acad. 6: 540. 1865. 
Bipeon filifolius ieamar K: Nels. Bot. Gaz. 54: 413. 1912. 
Perennial from a taproot and much-br anched caudex, 5-15 cm. tall, the ef ncaa finely white- 
strigose. ee ves all or nearly all in a basal cluster, linear, 2-7 cm. long, nf wide; hea 
solitary, turbinate to subhemispheric, the disk wide; involuc ee 5-1 ches: “high, ptt 
to villous especially toward the base, — phyllaries gens acute, firm, imbricate, usually green 
pistillate flowers wanting ; disk-corollas 4.5- mm. long; style- appendage’ acute, mm. 
long ; pappus-bristles 25-40, gen alee unequal, sometimes with a few inconspicuous outer setae; 
achenes 2-nerved, glabrou s below, short-hairy abov 
ee rock laces in the mountains a fothils, Arid Transition and Canadian Zones; Kittitas 
adie: Washington, to Siskiyou (Marble Mountains) and Nevada —- Be cnet eastward to Lemhi and 
Cassin Counties, Idaho — Elko and Lander Counties, Nevada. Type 1 y: near Virginia City, Storey 
County, Nevada. June— 
Erigeron Seon var. nudatus (A. Gray) Cronquist, ear 6: 199. 1947, Cees nudatus A. Gray, 
Proc. Amer. Acad. 20: 297. 1885.) Stem and leaves glabrous or finely and sparsely strigose; involucre glabrous 
or very nearly so; style-appendages acutish, 0.2-0.3 mm ene Ccrpeatins areas in the mith region of 
southwestern Oregon and adjacent California. Type | ocality Boden 1 a page? Se Specimens of 
Erigeron bloomeri var. pibens Keck, Aliso 4: 105. — gooey ‘con ee Aaa ani E omeri var. 
nudatus in being soft- pilose throughout with -cpharerheg hairs. In the Marble Mountains, Siskiyou oe Cali- 
fornia. Type locality: King’s Castle, Marble Mountain 
an Ea gerap linearis (Hook.) Piper. Desert Yellow Daisy. Fig. 5619. 
Diplop p li Hook. Fl. Bor. Amer. 2: 21. 1834. 
Erigeron m peuteplie ane Gray, Proc. Amer. = or 16: 89. 1880. 
eset luteus A. Nels. Bull. Torrey oe 2: 1900. 
Erigeron linearis Siar Wonk 2. OS t. Herb. aa 567. 1906. 
Brive eron yakimensis A. Nels. Amer. ate, Bot. 23: 268. 1936. 
Perennial from a stout taproot and branched caudex, 5-30 cm. tall; Beare finely gray 
strigose ; tases of stems and of basal leaves conspicuously i indurated and Ye) oes enlarged, 
li rl , 
stramineous to sometimes purplish. Tove inear or nea 9 cm. long, 0 mm. wide 
sal and cauline or nearly ; heads solitary or few, the disk most! ide; in- 
volucre 4-7 m h, strigose-villous and etimes finely glandular, the phyllaries subequa 
imbricate, green or g ineous, ont. th da As idrib, rm, kened on the 
e inner sometimes purple-tipped ; or 5, yel 1 mm. long, mm. wide; 
disk-corollas 3.5-5.3 mm. long; pappus of 10-20 oo i sad some short, "often narrow, outer 
scales ; achenes 2-nerved, short-hai 
Dry often rocky soil from reste plains and foothills to moderate elevations in the mountains, often with sage- 
brush, Arid ‘Franshion Zone ilern British Columbia through eastern Washington and Oregon to Yosemite 
National Park, A pS ogg To eastward to Park County, Montana, Yellowstone National Park, Wyoming, and Elko 
- ounty, Nevad col ity: ‘‘near the ‘Priest’s Rapid’ of the Columbia, and also on Lewis and Clarke’s 
River.’ May Je uly (Aug.) 
39. Erigeron elegantulus Greene. Volcanic Daisy. Fig. 5620. 
eee sagen tains Me rem Erythea 3: 65. 1895. 
gantulus J. T. Howell, Leaflets West. Bot. 1: 205. 1936. 
Pecenall stants a taproot and much-branched caudex, 3-15 cm. tall; herbage poy or mod- 
erately gray-strigose ; bases of stems and basal leaves ped cartes Bre b mooth, shining, somewhat 
narrowly linear, one y 1.5-6 cm. long and 
so 
0.5-1 mm a sk ; 
involucre 3.5-5 mm. high, stri — -_ glutinous ; anc arcni imbricate, the short outer ones 
narrow and rather firm, the inner ones broader, with scarious and usually erose margins, acute 
or abruptly acuminate ; rays 15-25, py aesy or pink to ciennee white mm. long 8 wide ; 
disk-corollas 3.4-5.0 mm. long; pappus o sle ‘a bristles, eae ath a few slender, 
outer, sho above t ut. 
Open, often rocky ses in the plains and foothills, canna in basaltic or volcanic recks, Arid Transition 
and Canadian Zones; er, Union, and Klamath Counties, Oregon, to ray, Siskiyou, cg "Lassen Counties, 
California. Type locality : Dixie Valley, Lassen County, California. June—Jul 
