SUNFLOWER FAMILY 419 
dat cely so in reduced alpine forms); common in Oregon and 
Washington. grant Bee? southward, less commonly, to the pata ts une! of 
the Sierra Nevada. 14. A. cordifolia 
sents Sherecteuiprsy” disedid gh oy corollas occasionally a ag abe truly radiate). 
ast the lowermost lea more or less petiolate, the petiole sometimes (4. ee sage — 
heads idiies: avilndeas bracts narrow, rants and slenderly acute Aye 'g d Was 
ington, i Sarkyi: “ 
Heads erect; involucral bracts broader, oe acutish or hb acute. 
Lowermost leaves with mostly ovate subcordate or re igs blade more or less abruptly con- 
tracted to the mass 8 or at: wing i petiole, rely spatulate and wing- teen 
achenes usually tm not always hairy as well o “stipitate: a rasiotor: a aren on to 
southern California, ‘nig ih the Klamath reg . A, discot 
lLowermost ili more or atulate, usually with Ngcatis winged, often poor ssi ‘petiole: 
achenes stipitate- ih g Rtg region only. A. spathulat 
Leaves all broadly sessile, numerous, rather small; local species of northern Ke neas and cau 
regon 
Leaves tuotbied: reticulate-veiny; achenes hairy, not glandular. 17. A. venos 
Leaves entire, merely 3—5-nerved; achenes stipitate-glandular. 18. A. viscosa 
1. Arnica chamissénis subsp. chamissonis var. intérior Maguire. Meadow 
rnica. Fig. 5719 
Arnica chamissonis subsp. chamissonis var. interior Maguire, Madrofio 6: 154. 1942. 
Perennial from long, nearly naked rhizomes; stems solitary, 2-10 dm. tall; herbage mor 
less villous puberent to illo: Nikite, saa ng glandular jeg scid above. Cauline leaves Sanity 
, not m reduc par. lanceolate to slacia. sessile or the lowermost usually 
cm. long, 1-4. wide; heads generally 
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of rie involucre with ver y prominent c walls; rays commonly about 13, usually pale, about 
1.5 cm. long; achenes ae hairy and Diahdalie to palaces pappus tawny, subplumose. 
ows and other wet places, Boreal and Transition Zones; Alaska and Ay 3 age = oo ol earl 
ngto 
ypical A. chamissonis, a maritime phase of coastal —_ a and ihe Aleutian “Islands, has larger and mostly 
fewer (typically 1-3) heads, with the lower leaves hardly i = 
rnica chamissonis subsp. folidsa (Nutt.) Maguire, se a nin 0. “4999. (Arnica foliosa Nutt. repe 
Amer. Phil. Soc. IT. 7: 407. 1841.) Le a rl aad entire — teiety denticulate; hairs at the base of the 
volucre less prominently ave pappus eous ~ Ds itish, merely barbellate, Br grocw ge Boor. iss 
otherwise as in var. inter of the typical  eaideaies: uthern Mac Kenzie o Onta: uth t athern Cali- 
fornia and northern New Me xico. Type locality: Hg ithe alluvial flats o f the Celaada af the West. eartioe. 
pols near anid oe of the lake Timpanago s [Salt Lake].”’ This is a ag tract subspecies, composed of 
eral varieti Those occurring in our sane may be keyed as follows 
ee bracts very blunt ‘ relatively broad; herbage often but not always rather —T emi: 
n Bernardino Mountai r. bernardin 
uaa bracts a little narrower ie more poi 
ete conspicuously silvery- pee. = ee an mae of very wet places (typically tod Bead shallow 
ater). 
Herbage less densely hairy, scarcely silvery; moderately dry or usually merely moist habitats len. ‘sometimes 
n habitats as extreme as those characteristic of var. incana. r. folio. 
5719. Arnica chamissonis 5720. Arnica longifolia 
