SPIF

Ceanothus arcuatus McMinn

El Dorado, Loon Lake 7.5' USGS quad.

SPIF

Ceanothus integerrimus Hook. & Arn.

Tehama, Finley Butte 7.5' USGS quad. Judd Creek study site; ca. 1 air mile south of Lyman Springs., 1097m

SPIF

Ceanothus integerrimus Hook. & Arn.

Tehama, Finley Butte 7.5' USGS quad. Judd Creek study site; ca. 1 air mile south of Lyman Springs., 1097m

SPIF

Ceanothus lemmonii Parry

Butte, Paradise East 7.5' USGS quad. Collected outside Stirling City along the Feather River while conducting the Ferc-DeSabla PG&E Relicensing surveys on SPI land. Identification by Dean Wm. Taylor.

SPIF

Ceanothus pinetorum Coville

Shasta, Shasta Bally 7.5' USGS quad. (Unsure of exact location). Rainbow Lake area along road out to Duckett Peak. Growing out in 2008 Moon Fire area along a road that goes out to a SPI weather station on Duckett Peak. Area before the burn was predominately a dry, lower elevation, Ponderosa pine dominated forest. ID confirmed by Dr. Dean Taylor

SPIF

Ceanothus pinetorum Coville

Shasta, Shasta Bally 7.5' USGS quad. NE of Rainbow Lake ca 2.61 air miles. Growing out in 2008 Moon Fire area along a road that goes out to west side of Duckett Peak. Low elevation Pinus ponderosa and Quercus chrysolepis forest with Arctostaphylos viscida, Ribes roezlii, and Ceanothus integerrimus. Decomposed granite soil, SE aspect, 0% canopy. Plants blooming bright purple color., 985m

SPIF

Ceanothus prostratus Benth.

Modoc, Ambrose Valley 7.5' USGS quad. Ash Creek Campground

SPIF

Ceanothus pumilus Greene

Siskiyou, South China Mountain 7.5' USGS quad. Scott Mountains; The Eddy's, Pacific Crest Trail Ca. 0.5 mile North of Forest Road 17; Shasta-Trinity National Forest. Open old growth stand of Pinus jeffreyi., 2103m

SPIF

Ceanothus velutinus var. velutinus Douglas

Lassen, Milford Grade, southwest of Susanville. Abundant on north-facing slope.

SPIF

Frangula purshiana (DC.) A. Gray ex J.G. Cooper subsp. ultramafica Sawyer & S.W. Edwards

Plumas, Caribou 7.5' USGS quad. Canyon Creek, tributary to the Feather River. Seepage area abutting the roadway characterized by abundant Hastingsia alba; large shrubs with bifacial leaf coloration: upper surface sparsely pubescent, not papillose, and grey green (RHS 133B when fresh) but not glaucescent; rounded shrubs to 3-4 m tall; same location as Sawyer 12044 (a paratype cited in Madrono 54:172-174. 2007). Lat/Lon taken by GPS., 863m

SPIF

Frangula purshiana (DC.) A. Gray ex J.G. Cooper subsp. ultramafica Sawyer & S.W. Edwards

Plumas, Onion Valley 7.5' USGS quad. South Fork Rock Creek, along Forest Road 24N28, Plumas National Forest. On serpentine; low rounded shrubs to 1 m tall, with strong bifacial leaf coloration: upper surface sparsely pubescent, not papillose, and dark green (RHS 137A when fresh) but not glaucescent; lower leaf surface green (RHS 137C when fresh), veins heavily pubescent and more yellow green (RHS 145C). Lat/Long collected by GPS., 1609m

SPIF

Rhamnus alnifolia L'Hér.

Lassen, Canyondam 7.5' USGS quad. E of Lake Almanor and NE of Dyer Mtn. Growing along small seep with alder and Calocedrus decurrens, Senecio triangularis, Potentilla glandulosa, Carex feta, and Hackelia sp. Also growing out into dry open slope with 0% canopy cover., 1803m

SPIF

Rhamnus californica Eschsch.

Tehama, Devils Parade Ground 7.5' USGS quad. Near Ponderosa Way and "H" Line road., 1067m

SPIF

Rhamnus ilicifolia Kellogg

Shasta, Hanland Peak 7.5' USGS quad. ~0.72 air miles W of Bucks Peak and ENE of Lakehead. Growing near the bottom of a large rocky cliff-outcrop with Quercus chrysolepis, Aesculus californica, Cercis occidentalis, Pinus sabiniana. Very dry and steep, shaley, talus-scree slope., 851m

SPIF

Rhamnus rubra Greene

Tehama, Finley Butte 7.5' USGS quad. Judd Creek study site; ca. 1 air mile s Lyman Springs. (original described UTM point is typed incorrectly on label) (Current Jepson Name (10/2008): Frangula rubra), 1097m