442 COMPOSITAE 
21. Senecio macounii Greene. Puget Butterweed. Fig. 5762. 
wanacie festigtaas: Nutt. Suse A _, Soc. IT. 7: 410. 1841. Not Schweinf. 1824. 
er it 
Senecio spatuliformis Heller, Bal ‘Tore ip 26: rar 1899. 
Sen ene, Lea s Bot. Obs. 909. 
eas ilar to S. canus but ge er and more — on 2-7 dm. tall, more thinly tomentose 
i tomentum sometimes obscure by flowering time), and with consistently narrow leaves, the 
basal ones commonly merely ibintera inte: heads getiaicis larger, the involucre up to 1c m. high 
and dry n places, Upper Sonoran and Humid Transition Zones; west of the nen — 
tains from Vancouver ‘aend to seethara Oregon, mostly in the Puget trough. Type locality: Mou nson 
V cei Island. June-July. 
22. Senecio — es Woolly Butterweed. Fig. 5763. 
Senecio canus Hook. Fl. Bor. Am 333 
eae ie ewrerer Nutt. Trans. oe mer Phil. a ts: 7: 412, 1841. 
, Bull. Torrey Club 8: a Briges 
Senecio ligulifolius Greene, Leaflets Bot. Obs. 909. 
enecto canus [var.] purshianus A. Nels. in sath es 9 nase a Bot. Rocky Mts. 581. 1909. 
Senect 10 howellia var. Sette gee Bot. Gaz. 48: 148. 19 
Sene ecio ciesignams is Greenm. ty o. Bot. Gard. 1: 286. 1914. 
Y p Greenm te 
S i bolus £ i saben ace eae, op. cit. 269. 
Several-stemmed perennial from a more or less branching caudex, often with an evident — 
taproot, 1-3( m. tall, more or less strongly white-tomentose, often less so in age, the upper 
surfaces of the leaves sometimes glabrate. Basal lowermost cau ie leaves more or less tufted, 
m narrowly anceolate Bs broadly elliptic or ovate, the blade mostly 14 5 > 
wide, entire metimes irregularly subpinnately ort or elongate 
petiole; middl pper leaves few, often iairecky oothed or subpinnatifid, strongly and pro- 
gressively reduced, becoming + gears but the stem generally not appearing a aed — 
several ; involucre 4-8 mm. high, the bracts about 13 or about 2; bracteoles wanting or and 
Pp 1 
inconspicuous; disk 6-13 mm. aes rays mostly 6-13 mm. long or rarely wanting; scheits 
glabrous. 
Dry, n, often rocky places, from the a —_ foothills to timberline or above, Arid Transition and Boreal 
Zones; southern British co ageana to Saskate sete! outh to California, Colorado, and Nebraska; in our range 
occurring east of the Cas summits in tnahe P ge) norteade "‘Origte. eens rine: - near the coast in 
the Klamath region o ot et ta Oregon and fsa along the se aig Mountains and Sierra Nevada to Tulare 
County, California. Type locality: banks of the Saskatchewan Riv May-—Aug 
23. Senecio bernardinus Greene. San Bernardino Butterweed. Fig. 5764. 
Senecio bernardinus Greene apt aze i 298. 1898. 
Senecio inapiaieee var. eeisirdinn H. M. Hall, Univ. Calif. Pub. Bot. 3: 232. 1907. 
ial with 1 ae erect stems fro audex, 1-3 dm. tall, rather thinly tomentulose 
or in Ry ‘eee. Sp hot ong at the base, nerioiete the elliptic to obovate or subrotund blade 
0.5-2.5 cm. long and 5-15 m wae e, more or less toothed (often regularly s o) or subentire; 
ae eaves few nc very m mah uced, po stems somewhat scapiform sheaths abou t 3-20; 
involucre 5-8 mm. high, the bracts abcak 21 or about 13; bracteoles inconspicuous or eater: 
disk seen 8-14 mm. wide; s 6-10 mm. lo ici’ achenes glabrous o r hispidulou 
Dry open places, ie Transition and Canadian Zones; San Bernardino Mountains, rece Type locality: 
Bear Valley, San Bernardino Mountains. June—Aug 
24. Senecio ionéphyllus Greene. Tehachapi Butterweed. Fig. 5765. 
mentee fonophylius — Pe ange 20. 1899, 
t. Gaz. ge 462. 
Seperee ionophyilus v var. sind ane H. M. Hall, Hoa Calif. Pub. Bot. 3: 232. 1907. 
S var. sparsilobatus Greenm. Ann. Mo. Bot. Gard. 5: 46. 1918. 
S. io ionophyll: wine enm. loc. cit 
PAYVUUS Var. intr 
Seve eral- Se ence a ial from a branching caudex, 1.5—4 dm. tall, sir tomentulose or 
metimes a elatwede: Biel id: lowermost cauline leaves with obovate o rotund or flabel- 
late, coarsely blunt-toothe d, sometimes more or less lyrate blade up to scat "3 acm. nll and 
, peti 
th m ; 
involucre about 8-10 mm. high, the principal bracts about 21 or sometimes only 13; bracteoles 
few but sometimes well ror: or none ust di ~ necb Po asout 8-10 mm. long; rays about 8-14 
mm. long; achenes 5-6.5 g, glabro 
Dry open slopes in the Saints tes icici and Canadian Zones; mountains of southern a 
from Tehachapi aoatherard Type locality: near the summit of the mountains south on Tehachapi. June—Jul 
25. Senecio gréenei A. Gray. Flame Butterweed. Fig. 5766. 
Senecio greenei A. Gray, Proc. Amer. Acad. 10:75. 1874. 
Perennial from a branching, rhizome-like caudex, 1-3 dm. tall, thinly floccose-tomentose, 
eventually more or hese glabrate. Basal and lower cauline leaves well developed, the basal often 
