444 COMPOSITAE 
tufted on separate short shoots, petiolate, the blade subrotund or a ovate, up to about 6 c 
long and broad, more or less dentate; middle and eae cauline leaves few and much relied: 
heads 1-3, naked-pedunculate, erect, relatively very large, the involucre 10-14 mm. high, o 
much shorter than the broad (1.5-3 cm.) disk, the bracts es 13 or about og, Bocieotts few or 
none; rays 1-3 cm. long, flame or red-orange like the disk; achenes glabro 
Brushy slopes, commonly on serpentine, Upper Sonoran and Transition Ronen: Coan Ranges of northern 
California. Type locality: near the Geysers, Lake County, California. May—Jun 
26. Senecio werneriaefolius A. Gray. Alpine Rock Butterweed. Fig. 5767. 
ayeecte aureus ‘gph bbe Gray, Proc. Acad. Phila. 1863: 68. 
n, Mo, t. Ga 18 
1863. 
rd. 5:56, 1918. Not oy muirit L. Bolus, 1915. 
Senecio speculicola J. T. Howell, an West. Bot. 4: 64. 
Lax, several-stemmed perennial from a loosely ae ing caudex, up to 1.5 dm. tall, thinly 
Sicine and often Se citaally glabrate. Leaves tufted at the base, oblanceolate to Reon ie 
or occasionally broader, tapering to the petiole or petiolar — entire or nea he whol 
abou i 
ry, open, often rocky places at high elevations in the ntains, Arctic-Alp Zones; oe hk Nevada east to 
northern New Mexico, Colorado, western South Dakota, siad ‘western’ Montana m2 locality: et 
the Rocky iscntains.. in oerery ery, fat. 39°—41°." Jin 
The bbs: aba plants of S. riaefolius aie ye ap oncaran d<asS. 1 Gre Pike culicola 
J. T. Howell but can easily be eat tche a among specimens ee true S. werner nefuiae Scone Colorado. Tevcani onal 
plants “asin California approach or match the chiefly more northeastern, broader-leaved S. sarosus Klatt, cathe 
segregate from S. werneriaefolius. 
ae Senecio saalavhas ee Siskiyou Butterweed. Fig. 5768. 
¢ os y a 
hesp Greene, Pittonia 2: 166. 
S f leticus Greene, Leaflets Bot. Obs. oe < 1909. 
Fibrous-rooted, single-stemmed perennial from a short simple caudex, mostly 1-3 dm. tall; 
herbage tending to be slightly ietaci tulose. vidently so at the summit of the peduncles and base 
involucre. Basal leaves oblanceolate or elliptic to obovate ag | long (including 
the petiole) and 5— de; caulin f nt, and progressively reduced, somet 
hat pinnatifid ; heads 1-3, all long-pedunculate, the d wide; i 
high, the bracts about 13 o t-21, s lish toward the tip; bracteoles few, slender 
and elongate, or none; 1- m. wide; rays about 9-14 mm. long, yellow ; achenes glabrous 
Cc . 
. a areas, Arid Transition Zone; Josephine County, Oregon. Type locality: near Kerby, Oregon. 
ay—June 
28. Senecio subnidus DC. Alpine Meadow Butterweed. Fig. 5769. 
— ak tse DC. Prod. 6: 428. 1837. 
Sene. us var. subnudus A. Gray, Syn. Fl. N. Amer. 12: 391. 1884. 
rorseke sso Riots subnudus Jepson, Man. FI. Pl. Calif. 1154. 1925. 
Glabrous, fibrous-rooted perennial from a short slender rhizome, 0.5-3 dm. tall. Leav 
small, thin or slightly thickish, the basal ones commonly subrotund or r broadly obovate, comet 
: and 2 cm 
n de; cauline leaves few and reduced, some- 
times eee. ~ less > ~ stem ge ieee gr eads solitary or sometimes 2, the disk 
€, ye voluc 8m , the bracts about 21 or rarely only 13, ae 
long ; ach 
poe and ciiiee wet meadows, Hudsonian and Arctic-Alpine Zones; Washington to Montana and south- 
River yoke aan ne south to California (throughout the Sierra Nevada) and ‘Wyoming. Type locality: Columbia 
er. y-S 
purplish toward the tp ap: biacteples few, uate and rather elongate, or none; rays about 7-14 m 
29. Senecio resedifélius Less. Dwarf Arctic Butterweed. Fig. 5770. 
Senecio resedifolius Less. Linnaea 6: 243. 1831. 
Sene, oto Tyailts Klatt, Ann. = Hofm. Wien 9: 365. 1894. Not Hook. f. 1853. 
Sen eene, Pittonia 4: 110, 1900. 
i reenm. hae . Mo. . Gard. 3: 101. 1916. 
_ bs ¥ 
om a branched caudex or short, rather thick rhizome, about 0.5-2 dm. tall, essen- 
tiathy pi opined or occasionally on a little persistent tomentum at the base and in the axils of the 
leaves. Leaves thickish, the basal ones mostly arbicidatcbvatet we eniform ven o| e, blunt- 
toothed or subentire, the b ptoa it 2.5 cm. long and wide, generally abruptly contracted 
to the petiole; cauline leaves reduced upwards ‘becomi g sessile, in the larger pl 
less pinnatifid ; xsi hse arse ted 2, the disk a -18 mm. wide, yel more 
often orange or olucre h, the bracts a _ 21 S rarely only 
13, dactish = feast usally heccleles. averaging shorter and broader than in S. s us; rays 
variously dev: times as much as 14 mm. long and 4 mm. wide or - Wetasionally wanting ; ; 
Exposed situations at alpine or occasionally subalpine stations oe the h mountains, mostly upper 
Lata ar: pre Reape and Alaska to Ri frei nee south to central ice ington, sg ana, and northwestern 
yoming. Type locality: St. Lawrence Island n the Bering Sea. July—S. 
