Eriogonum ertterae
PNW
ID
9 specimens from 3 herbaria:
Idaho (9)
Owyhee (9)
Eriogonum ertterae Reveal & Grady

Idaho: Owyhee County: Silver City Range; west slope of War Eagle Peak, about 100 m below summit, 1.5 airmiles ESE of Silver City. Elev. 8005 ft.
43.00721° N, 116.70648° W
Datum: WGS 84. Uncertainty: 4 meters. Coordinate Source: GPS.
In rhyolitic outcrops mostly barren with exception of Poa secunda ssp. secunda, Elymus elymoides ssp. elymoides, Astragalus whitneyi. flowers lemon yellow with red at petal apices; about 90% of population is flowering; 8-20 cm diameter mats; 5-8 cm tall. Phenology: Flowers.

D. H. Mansfield 20348, Jul 23, 2020
With B. Corbin
CIC, Accession: 57132
Eriogonum ertterae Reveal & Grady

Idaho: Owyhee County: Silver City Range; north facing slope of War Eagle Peak, 1.5 airmiles /ESE of Silver City. Elev. 8005 ft.
43.00788° N, 116.70493° W
Datum: WGS 84. Uncertainty: 4 meters. Coordinate Source: GPS.
On open slope of decomposing granite amidst sparse Cercocarpus ledifolius stands, with Eriogonum spp., Castilleja viscidula, Penstemon fruticosa, Festuca idahoensis, Symphoricarpos rotundifolius var. vaccinoides, and Astragalus whitneyi. Phenology: Flowers.

D. H. Mansfield 20352, Jul 23, 2020
With B. Corbin
CIC, Accession: 57131
Eriogonum ertterae Reveal & Grady
Annotated by D. H. Mansfield, 25 Jun 2019.

Idaho: Owyhee County: On War Eagle Mountain about 100 m west of and below the summit radio towers; Silver City range. Elev. 7780 ft.
43.00311° N, 116.7034° W
Datum: NAD 83. Coordinate Source: Field Notes.
On barren, old, rhyolitic barrows and adjacent gravelly flats. No individuals were reproductive in population of about 150. Only a few individuals had old scapes. Phenology: Vegetative.

D. H. Mansfield 19272b, Jul 15, 2019
CIC, Accession: 55860
Eriogonum ertterae Reveal & Grady
Annotated by D. Mansfield, Aug 2014.

Idaho: Owyhee County: On War Eagle Peak northeast of Silver City, ID. Elev. 8000 ft.
43.00719° N, 116.70631° W
Datum: NAD 83. Uncertainty: 6 meters. Coordinate Source: GPS. Error radius calculated from georeference precision
On rhyolitiic gravels to west of the top of War Eagle peak, in areas disturbed by barrow pits and cell phone tower structure and support buildings, with Eriogonum "crosbyae" (War Eagle Erigonum), E. strictum, and Chenactis douglasii. Phenology: Flowers.

D. Mansfield 12-731, Jul 26, 2012
With V. Ray, B. Chavez, B. Brown & B. Eckert
CIC, Accession: 43731
Eriogonum ertterae Reveal & Grady
Annotated by D. Mansfield, Aug 2014.

Idaho: Owyhee County: North and west side of War Eagle Peak, within 50 m of summit, above Silver City in the Owyhee Front range. Elev. 8010 ft.
43° 0.472' N, 116° 42.296' W; T5S R3W S9 NW 1/4
On mostly granitic soils, some in rhyolites, mainly north facing, wind blown slopes; with krumholtz Cercocarpus, Ericameria viscidiflora, Cryptantha spiculifera, Astragalus whitneyi, Carex rossii, Silene douglasii. Phenology: Flowers.

D. H. Mansfield 03-332, Jul 13, 2003
With J. Reveal, V. Geertson
CIC, Accession: 32818
Eriogonum ertterae Reveal & Grady
Annotated by D. Mansfield, Aug 2014.

Idaho: Owyhee County: North and west side of War Eagle Peak, within 50 m of summit, above Silver City in the Owyhee Front range. Elev. 8010 ft.
43° 0.472' N, 116° 42.296' W; T5S R3W S9 NW 1/4
On mostly granitic soils, some in rhyolites, mainly north facing, wind blown slopes; with krumholtz Cercocarpus, Ericameria viscidiflora, Cryptantha spiculifera, Astragalus whitneyi, Carex rossii, Silene douglasii. Phenology: Flowers.

D. H. Mansfield 03-332, Jul 13, 2003
With J. Reveal, V. Geertson
CIC, Accession: 33030
Eriogonum ertterae Reveal
Annotated by J. L. Reveal, 1993.

Idaho: Owyhee County: Silver City Range, summit of War Eagle Mtn. Elev. 2438 m.
N-facing tower, near radio tower. Eriogonum umbellatum, E. strictum, Haplopappus acaulis, H. suffruticosus, Astragalus whitneyi, Trisetum spicatum, and Festuca idahoensis.

A. F. Cholewa s.n., 15 Jul 1985
With D. M. Henderson
NY, Barcode: 00280683
Eriogonum ertterae Reveal
Annotated by James L. Reveal, 1993.

Idaho: Owyhee County: Silver City Range, summit of War Eagle Mtn, near radio tower. Elev. 8000 ft.
T5S R3W S9 NW
Datum: NAD 27. Uncertainty: 800 meters. Coordinate Source: TRS2LL.
N-facing slope, in decomposed granite with some metamorphic rocks. Associates: Eriogonum umbellatum, E. strictum, Haplopappus acaulis, H. suffruticosus, Astragalus whitneyi, Trisetum spicatum, and Festuca idahoensis. Plts scattered; fls yellow. Phenology: Flowers.

A. F. Cholewa 1200, Jul 15, 1985
With D.M. Henderson
ID, Accession: 85055, Barcode: ID074185
Eriogonum ertterae Reveal
Annotated by James L. Reveal.

Idaho: Owyhee County: Summit of War Eagle Mt, Silver City Range.
43.007173° N, 116.704682° W,
Datum: WGS 84. Uncertainty: 1000 meters. Coordinate Source: Digital Map.
Growing on raw decayed granite rocks. Occasional. Phenology: Flowers.

William H. Baker 8147, Jul 21, 1951
ID, Accession: 15423, Barcode: ID074232
8 images from 2 herbaria:
CIC (6)
ID (2)