SPIF

Arnica mollis Hook.

Lassen, Westwood West 7.5' USGS quad. Wet creekside., 1749m

SPIF

Arnica dealbata (A. Gray) B. G. Baldwin

Tehama, Mineral 7.5' USGS quad. Forest slope near creek.

SPIF

Arnica cordifolia Hook.

Trinity, Weaverville or Hoosimbim Mountain 7.5' USGS quad. BLM exchange parcel TRI-024. Steep slope near logging road. ID determined by Glenn Clifton, 701m

SPIF

Arnica cordifolia Hook.

Humboldt, Board Camp Mountain 7.5' USGS quad. Pilot Ridge, ca. 23 road miles south of Hwy 299 on USFS Road 1. On rocky road bank of slightly-serpentinized soil., 1280m

SPIF

Arnica cordifolia Hook.

Humboldt, Board Camp Mountain 7.5' USGS quad. Pilot Ridge, ca. 27 road miles south of Hwy 299 on USFS Road 1. Common on forest floor and in openings., 1219m

SPIF

Arnica cordifolia Hook.

Trinity, Damnation Peak 7.5' USGS quad. Trinity Mountains, North of Blue Mountain. Growing in opening of forest near road edge with Lithocarpus densiflorus, Pseudotsuga menziesii, and Pinus ponderosa. Exact location information not collected.

SPIF

Arnica discoidea Benth.

Shasta, Bollibokka Mountain 7.5' USGS quad. Growing under a mixed conifer forest., 1038m

SPIF

Arnica discoidea Benth.

Shasta, Growing in the Sacramento Canyon in a mixed conifer forest.

SPIF

Arnica discoidea Benth.

Shasta, Ono L 7.5' USGS quad. Exact location not recorded. Growing along a road within a predominately Douglas-fir forest. Near Jerusalem Creek.

SPIF

Arnica fulgens Pursh

Lassen, Bullard Lake 7.5' USGS quad. On the west side of Jessen Valley, SSW of Big Jacks Lake on Forest Route 34N27. Growing in meadow drainage that drains into Jessen Valley. Growing above and below the road in the drier edges of the meadow and drainage. Additional Points: 40.79712, -120.996; 40.79398, -120.992; NAD27. About 2,900 plants all together. Lat/Lon collected by GPS.

SPIF

Arnica fulgens Pursh

Lassen, Bullard Lake 7.5' USGS quad. Within a bend of the "GC-Line", just E of its junction with the "140A" road and E of the mapped "Camp Stanford". About 13 air miles NW of Eagle Lake and 3 miles east of Big Jacks Lake. 3 clusters within a meadow with still moist soil, alongside open eastside pine forest with a meadow and seasonal stream running through. At the forest edge where the meadow/stream enters a large open meadow. With Potentilla sp, Triteleia hyacinthina, Symphyotrichum sp, Achillea millefolium, Grasses, Sidalcea sp.

SPIF

Arnica fulgens Pursh

Modoc, Donica Mountain 7.5' USGS quad., 1351m

SPIF

Arnica mollis Hook.

Trinity, Seven Lakes Basin 7.5' USGS quad. ENE of Panther Rock along a tributary to Tamarack Creek. Growing in a meadow in a red fir forest., 1880m

SPIF

Arnica sororia Greene

Lassen, Poison Lake 7.5' USGS quad. Longs Cabin (ca. 12 air miles NE of Old Station), margin of moist meadows bordered by Pinus ponderosa forest., 1783m

SPIF

Arnica sororia Greene

Lassen, Growing on the edge of a meadow and pine forest out near Bieber.

SPIF

Arnica venosa Hall

Shasta, Bollibokka Mountain 7.5' USGS quad. Logging Road 1.48 air miles N 26.45*W of Nosoni Mountain, Mc Cloud River Canyon, watershed South Fork Chatterdown Creek. Roadcut of logging road on northwest facing slope, on mobile sedimentary scree fragments, growing in mesic Pseudotsuga menziesii forest., 671m

SPIF

Arnica venosa Hall

Trinity, Carrville 7.5' USGS quad. Forest Road 38N85 from Trinity River campground to Bonanza King Lookout, about 0.5 mile by road east of Highway 3. Roadbank in loose soil, mixed conifer forest of Pseudotsuga menziesii-Pinus ponderosa, Acer macrophyllum; gabbro substrate., 853m

SPIF

Arnica venosa Hall

Shasta, Yellowjacket Mountain 7.5' USGS quad. Curl Ridge road (35N18) just above the road cut on the inside of hairpin turn. Collectors: T. Engstrom, A. Arthur, J. Minton. Lat/Lon collected by GPS., 794m

SPIF

Arnica vernalis nov.

Trinity, Weaverville 7.5' USGS quad. South of Grub Gulch. With some Arnica cordifolia in open understory of Douglas Fir and Black Oak forest on North-facing slope. ID Determined by Glenn Clifton., 762m