Solidago nana Nutt.
Annotated by Charles F. Williams, 18 Jan 2013. Sources: Intermountain Flora.

Idaho: Caribou County: Caribou Mountain. Camp at junction of Barnes Creek Road & Willow Creek Road 0.2 miles North of Monte Cristo Mine. Climbed roughly straight up from cabin to ridge. Grassy, fairly moist, open hillside.Elevation: 9000 ft. Elev. 9000 ft.
43.0969719° N, 111.3324451° W; T4S R44E S5 SW1/4
Datum: WGS84. Uncertainty: 500 meters. Coordinate Source: BioGeomancer. Invalid coordinates (located outside county bounds).
Rock slide, from boulders to medium rocks with lichens at margin of slide in little soil. Found species below. Rock with some soil. Associated with white geranium, Rudbeckia, Agastache, Solidago, Scrophularia lance, and yellow Mimulus. Some conifers: parrots beak, pink geranium, Potentilla, tobacco, yarrow, Senecio, Carex gayophytum, Eriogonum. Also columbine, Arnica, and a bramble (Rubus idaeus var. gracilipes). Rhizomantous. Radiate; rays yellow- tridentate tipped. 3 ranks phyllaries; papery base, green tip. Pappus- barbed filiments; 1 series. Receptacle naked. Invol ~ 3-4 mm. high. Leaf margins and stems densely hairy with short bent hairs- canescent. This most resembles S. nana because of leaf shape and hairyness of leaves and stems. Leaf surface less ahiry than typical for species and cauline leaves larger and more prominent than typical for species. Seems somewhat intermixed between S. nana and S. multiradiata. Phenology: Flowers.

Thomas Dieffenbach 00342, Jul 27, 1977
IDS, Accession: 2012.010, Barcode: IDS0054127