438 COMPOSITAE 
Senecio ietgmeseinews var. gcheolenee. (A. G may), Cronquist, Leaflets West. Bot. 6:48. 1950. (Senecio 
cordatus Nutt. Trans. Amer. Phil. Soc : 411. 1841; Senecio ines var. ochroleucus A. Gray, Syn. Fl. N, 
Amer. 17: 388. 1884; S. evxaltatus pelle S| Se i Bing Con U.S. Nat. Herb. 11: 600. 1906.) Basal 
leaves tending to have deltoid or subcordate blade though sometimes “i narrow as in typical var. exaltatus (which 
with deltoid o ~ r ad as in v. xaltatu 
Commonly in slightly more A habitats than var. exaltatus, ee in woodlands; western ntana, across north- 
ern Idaho to the Vascahe Mountains of Washin 4 , south to n n Oregon and reputedly to foarn California. 
Type locality: Columbia River, Klickitat County, Washin gton. 
$s io integerrimus var. major (A. Gis) Cronquist, sing i oa 1958. (Senecio eurycephalus var. 
major A. Gray in — Pacif. R. Rep. 4: 111. rie S. men ndocine Proc. Amer. Ac = 72 362; pri 
a: whippleanus A. Gray, Syn. FI. i Sar ip : 384. 1884; es "condensin s Davy, ae day 3: 117. 
ne : 
se 
r ‘ 
Bot, ~ : Wa foi § 
Pl. Calif. 1152. 1925.) Leaves subentire to toothed or even ilsiuie ded: hheads ‘mostly ged and. ag vely large, 
the involucre 7-12 mm. high, its bracts twit bate or sometimes somewhat purplish tips; “ee cm. long; 
otherwise as in var. exaltatus. On the west slope of the Sierra Nevada and in othe Nerth Cone’ Baie of Cali- 
fornia; also in the White Mountains in Nevada. Type locality: ‘near Murphy’s [Calaveras County], Califor nia.” 
Senecio integerrimus ov vaseyi (Greenm.) Cronquist, Vasc. Pl. Pacif. Northw. 5: 293. 1955. (Sen 
vaseyt serena. I n Piper, Con US. Nat Herb. 11: 600. 106. Heads not very numerous; principal involueral 
bracts co: monly. B Baia oT. evidently black. -tipped; rays wanting; ovis as in var. eraltatus. Ey and 
Wenatchee 1 region of central Washington; also in the Wallowa alcaictathe of northeastern Oregon pe Aiealiiy: 
ashington 
be Senecio aronicoides DC. California Butterweed. Fig. 5753. 
icoid rod. 6: 426. 1837. 
var. sini ulus A. Gray, Pacif. R. Rep. 4: 111. 1857. 
7 e, Pittonia 2: 166. 1891 
Senecio leptolepis Gib: F 1 Fran. 468. 189 
8 :, Dens. 
Stout, fibrous-rooted perennial from a very short, erect crown; stems solitary, 3-9 dm. tall; 
herbage srachnelt aitiecs with pes loose hairs at least when young. Leaves highly variable, 
subentire to i often toothed or even De erred incised-lobulate, the basal and lower cauline 
ones 8-30 ide, the 
long (petiole gear eds d 2-12 cm. wi blade often deltoid or subcordate, 
often hate hi narrower; ¢ auline leaves prabvectvely. reduced upward, becoming sessile; heads few 
to more often — umerous in a oose or compact sa ole the terminal peduncle shorter 
than the other vale e 4-8 m m. high, with mostly about 8 or about 13 bracts, <— with pale 
aw “ary sees in, in op in the foothills and lower mountains, Upper Sonoran and Arid Transition 
Foote Bride rim of the —— Valley of pag sc Behing the vicinity of Mount Shasta south to the San 
Franc o Bas m5 region and thence along the western the Sierra Nevada to Fresno County. Type icality? 
California. April—July. 
13. Senecio foétidus Howell. Sweet-marsh Butterweed. Fig. 5754. 
Senecio foetidus Howell, Fl. N.W. Amer. 377. 1900 
labrous but scarcely aplenty hada Lae perennial from a very short erect crown, 3-1 
tall, Pi stems solitary or more commonly clustered. Leaves thickish and somewhat succulent, 
pa Saat sharply dentate, the basal od lowermost cauline ones petiolate, with mostly elliptic or 
broadly oblanceolate blade 6-25 cm. long and 2-7 cm. wi e; middle and upper leaves rea strongly 
and progressively reduced, becoming sessile; heads more or less numerous (rarely as few as 8) 
in a congested inflorescence; involucre 6-9 mm. high, the bracts nt ie about C13 ometimes 
only 8, minutely black-tipped; bracteoles few, narrow and rather elongate; rays race typically 
ut 5, = o about 8 mm. long or more often wanti enes glabrous. 
Wet meadows in the mountains and foothills, Arid cranes sas ashington east of the Cascade Moun- 
tains aad adjacent southern British Columbia east to western south to no Eethcketern ete Sei northern 
Nevada, and central and southwestern Idaho. Type locality: aires Vatiay: Washington. May-July. 
ng foetidus var. hydro ophiloides (Rydb.) T. Rog ge ahaa ex Cronquist in Ferris. Cate Dudley Herb. 
5: 102,:. 1958. (Senecio h SRN ses Rydb. Mem el ie << 1: 441. 1900.) Single-stemmed; leaves 
thi rn or sometimes thin; head an open, corymbito ans inflor the terminal one short-pedunculate and 
Mes others; rays melt 5 or 8, 5-10 mm. long; "otherwiae ‘ike typical >. foetidus. Wet meadows ong 
moist sti d foo thills, western ) Mcatase to northeastern Washington and northeastern Ore: 
Type pee hes Forest, Nez Perce County, Idaho. 
5 Senecio hydréphilus Nutt. Alkali-marsh Butterweed. Fig. 5755. 
y drophilus Nutt. Trans. Amer. Phil. Soc. II. 7: 411. 1841. 
be phil: Yr. pactficu. ens Greene, P Pittonia 1: 220. 1888 
Senecio paitires Rydb. Fi. Rocky Mts. 917. 
Glabrous, > oat et or less glaucous, stout, hollow-stemmed, fibrous-rooted perennial from a short 
most ? 
erect cro 20 dm. tall, the gang often sa shin clustered. Leaves thick 
mewhat succulent, commonly entir early Imes more evidently callous-too 
al or lowermost cauline one long-petiolate, tae large, mostly narrowly elliptic blade 
c long and 2-5 cm. ‘ven larger ; middle and upper leaves few, strongl 
and progressively reduced, coming ine ti usually rather numerous r ; in- 
io 5-8 mm. high, rather narrow, its bracts common y about 8, sometimes 13, often black- 
; bracteoles few, narrow, and short; rays few, about 4-8 mm. long or often wanting ; 
Fi ae andsp rous. 
py places in the valleys and foothills, tolerant of salt and alkali, Upper Sonoran and Transition Zones; 
southern British pe to the San Francisco Ba: region, east i ) Montana, Bo uth Dakota, and Colorado. Type 
locality: ““Ham’s Fork of the Colorado of the West yoming ].”’ y—July 
