434 COMPOSITAE 
4. Senecio spartidides Torr. & Gray. Narrow-leaved Butterweed. Fig. 5745. 
Senecio spartioides Torr. & Gray, Fl. N. Amer. 2: 438. 
Senecio serra var. sanctus H. M. Hall, Univ. oe Pub. Bot. 3: 230. 1907. 
Taprooted perennial with numerous stems arising from the base, pone 2-8 dm. tall, 
somewhat woody below but commonly dying back to the ground each year; herbage glabrous. 
Leaves numerous, well distr inated gprs the stems, linear and entire coamite a few with some 
lateral segments), the lowermost reduced, the others long a 5 mm wie 
ea erous in a paniculate-corymbiform inflorescence, the disk mostly 5-10 mm 
volucre 5-11 mm. high, the principal bracts about 13 or sometimes only 8; pencenss ssl et 
few, 9 short; rays 7-15 mm. long; achenes canescent or imei glabro 
y open slopes, Arid Transition and Canadian Zones; southern California (San Bernardino Mountains) and 
northern Lower a niaer® PB = Sierra San Rabe eer north and east to New Mexico, western Nebraska, and 
Wyo . Typel ity: Sw ater River . i iy- Aug 
rise Cake var. peace shah . Holmgren ex Cronquist in Ferris, Contr. Dudley Herb. 
5: 102. 1958. Herbage oo 2 ope im Seti short, crisped, sega hairs and obscurely ee 
rn - Pon dag, —_ brous; otherwise similar to low, small-headed plants the typical variety (plants 3 dm. 
tall; ucre 5—7 Seg hi oy Upper nitittades 4 in California in Moab County "meth to the White 5 potash and 
the adiaceet mountains or Mineral County, Nevada. Type locality: head of Crooked Creek, White Mountains, 
Mono County, California. 
5. Senecio fremontii Torr. & aes Dwarf Mountain Butterweed. Fig. 5746. 
Senecio fremontit Torr. & Gray, Fl. N. Am : 445. 1843. 
Senecio ductoris Piper, Contr. U.S. Nat. ae ii 601. 1906. 
Glabrous perennial from a taproot and branching caudex (caudical branches — 
elongate and rhizome-like), freely te from the decumbent base, commonly about 1-1.5 dm. 
tall or t t someti longer and sprawling with ascending branches. pee thickish, 
om oO ar 1 
adly o 
hare: heads oars Ce the Ra usually shortly os aa Seles State involucre about 
a igh. the principal beens mostly about 13; fea vincles few, usually short and bro oce 
nally narrower “ more elongate; rays 6-10 mm. long; achenes glabrous or ecacboaile 
es Teeciiesicis 
ues Wrdeie. “Tepe elite: Wind River Moun Waele ng. July Saat 
Replaced in _ southern Rocky Mountains and_o Y ihe vanterh rim of the yet Basin by the well-marked 
pa (Greene) Cronquist, Vasc. Pl. Pacif. Northw. 5: 290. 1955 (S. blitotdes Greene, Pittonia 4: 123. 
nec io | ee var, occidentalis A. Gray, Bot. Calif. 1: 618. 1876. (Senecio occidentalis Greene, Pit- 
° 
Erospicuoualy poanes ueree pons of shires & nd adjacent Nevada and in the San Bernardino egerierred 
aaa A seis s from Mount Rose much resemble . fremontit. Type locality: Mamit Whitney and vicinity. 
J ug. 
6. Senecio pattersonénsis Hoover. Mono Butterweed. Fig. 5747. 
menees nevolate Hoover, Leaflets West. Bot. 3: 256. 1943. Not Kirk, 1899. 
oover, op. cit. 5: 1947 
Res Bees a small form of S. hidlsie but narrower-leaved and lacking a taproot; plant 
tic snttal from a branching eyuslens of wary rhiz gd about 1 dm. tall or less. Leaves sMisnicebbate 
to oe up to about 3.5 cm. long and 5 mm. wide. 
Open y piace s at very high elevations in me mountains, Hudsonian and Arctic-Alpine Zones; Sweetwater 
Mountains: ian rae Nevada, in Mono County, California. Type locality: Mount Patterson, Mono Comite 
u 
7. Senecio clarkianus A. Gray. Clark’s Butterweed. Fig. 5748. 
Senecio clarkianus A. Gray, Proc. Amer. Acad. 7: 362. 1868. 
Fibrous-rooted, apparently single-stemm ed perennial about 6-12 dm. tall, the stem and_some- 
times also the leaves obscurely to evidently crisp-pubescent with multicellular hairs as in S. inte- 
isc eaves numerous, — par ianed along the stem, up to 25 cm. long and 6 cm. wide, 
grad upwards, the pering to a petiolar base, the cilddle and upper sessile ; some 
or all of the leaves pinnately fied 6 or lobed, mostly Bieticauert 4 so, with pointed segments, the others 
sharply and remotely dentate; heads several in corymbiform inflorescence, the terminal pe- 
duncle shortened and surpas: ssed by the share: each about 7— m. high, the bracts about 
1 or sometimes only 13, not black-tipped ; bracteoles well developed, loose, and elongate; rays 
about 8 or 13, 1 cm. long or more; achenes glabro: 
Meadows and other moist place: € 
County, California. Type locality: sy nian, Zone in te Matias Mintice Gice Cahttiie Aub Sepe. 
