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bitterroot buckwheat, bitterroot wild buckwheat, golden buckwheat, golden wild buckwheat, one-eyed wild buckwheat

Railroad Canyon wild buckwheat

Habit Herbs, matted, scapose, 0.2–1 × 0.5–2 dm, floccose to tomentose, greenish. Herbs, matted, not scapose, (0.02–)0.04–0.06(–0.08) × (0.5–)1–3(–4.5) dm, tomentose, grayish.
Stems

matted, with persistent leaf bases, up to 1/5 height of plant;

caudex stems matted;

aerial flowering stems scapelike, erect, slender, solid, not fistulose, 0.2–1 dm, floccose to tomentose.

spreading, with persistent leaf bases, up to 1/8 height of plant;

caudex stems matted;

aerial flowering stems absent.

Leaves

basal, fasciculate in terminal tufts;

petiole 0.2–0.5(–0.8) cm, tomentose;

blade oblanceolate to spatulate, (0.5–)0.7–1 × 0.2–0.4(–0.5) cm, densely white- or grayish-tomentose on both surfaces, margins plane.

basal, fasciculate in terminal tufts;

petiole 0.1–0.3 cm, tomentose;

blade narrowly spatulate, 0.4–0.8 × (0.15–)0.2–0.4 cm, densely grayish-white-tomentose on both surfaces, margins plane.

Inflorescences

capitate, 0.5–1.5 cm wide;

branches absent;

bracts 3–5, scalelike, triangular, 1–2 mm.

capitate, 0.5–0.9 cm;

branches absent;

bracts absent.

Peduncles

absent.

erect, (1.5–)3–5(–7) cm, thinly tomentose, arising directly from caudices.

Involucres

3–5 per cluster, turbinate-campanulate to campanulate, 2.5–3(–3.5) × 2.5–3 mm, membranous, glabrous, sparsely floccose on teeth;

teeth 5, erect, 0.6–1.2 mm.

1 per node, turbinate to turbinate-campanulate, 2–3 × 1.5–2(–2.5) mm, rigid, thinly tomentose;

teeth 5, erect, 0.4–0.6 mm.

Flowers

(2–)2.5–3 mm;

perianth yellow, sparsely glandular, infrequently glabrous;

tepals connate proximal 1/3, monomorphic, oblong to narrowly obovate;

stamens exserted, 2–2.5(–3) mm;

filaments pilose proximally.

2–3.5(–4) mm;

perianth white, glabrous, pustulose;

tepals connate proximal 1/5, slightly dimorphic, those of outer whorl oblong, those of inner whorl oblong-oblanceolate;

stamens slightly exserted, 2–3 mm;

filaments pilose proximally.

Achenes

light brown, 2.5–3 mm, glabrous except for minutely bristly beak.

light brown, 2.5–3.5 mm, glabrous except for slightly papillose beak.

Eriogonum chrysops

Eriogonum soliceps

Phenology Flowering May–Jul. Flowering Jul–Aug.
Habitat Gravelly basaltic or rhyolitic slopes and outcrops, sagebrush communities Gravelly soil, sagebrush communities
Elevation 1200-1400 m (3900-4600 ft) 2500-2600 m (8200-8500 ft)
Distribution
from FNA
OR
[WildflowerSearch map]
[BONAP county map]
from FNA
ID; MT
[BONAP county map]
Discussion

Of conservation concern.

Eriogonum chrysops is known from five scattered sites in the Skull Creek area of Malheur County. It is no longer considered a candidate for threatened status under the provisions of the Endangered Species Act. However, it still is considered a “threatened” species by the state of Oregon.

(Discussion copyrighted by Flora of North America; reprinted with permission.)

Of conservation concern.

Eriogonum soliceps occurs in the Beaverhead Mountains that border Lemhi County, Idaho, and Beaverhead County, Montana. Elsewhere in Beaverhead County the species is found in the Tendoy Mountains, and in the Cedar Pass and Bannack areas. Otherwise the Railroad Canyon wild buckwheat is known from Chalk Bluffs northeast of Wisdow in Deer Lodge County, and from an unknown location in the “mountains south of Virginia City” in Madison County, Montana. It may be quickly distinguished from E. mancum by its reduced inflorescence composed of a single, upright peduncle bearing a solitary involucre.

(Discussion copyrighted by Flora of North America; reprinted with permission.)

Source FNA vol. 5, p. 281. FNA vol. 5, p. 278.
Parent taxa Polygonaceae > subfam. Eriogonoideae > Eriogonum > subg. Eucycla Polygonaceae > subfam. Eriogonoideae > Eriogonum > subg. Eucycla
Sibling taxa
E. abertianum, E. acaule, E. alatum, E. aliquantum, E. allenii, E. alpinum, E. ammophilum, E. ampullaceum, E. androsaceum, E. anemophilum, E. angulosum, E. annuum, E. apiculatum, E. apricum, E. arborescens, E. arcuatum, E. aretioides, E. argillosum, E. argophyllum, E. arizonicum, E. artificis, E. atrorubens, E. baileyi, E. batemanii, E. bicolor, E. bifurcatum, E. brachyanthum, E. brachypodum, E. brandegeei, E. breedlovei, E. brevicaule, E. butterworthianum, E. caespitosum, E. capillare, E. cernuum, E. cinereum, E. cithariforme, E. clavatum, E. clavellatum, E. codium, E. collinum, E. coloradense, E. compositum, E. concinnum, E. congdonii, E. contiguum, E. contortum, E. correllii, E. corymbosum, E. covilleanum, E. crocatum, E. cronquistii, E. crosbyae, E. cusickii, E. darrovii, E. dasyanthemum, E. davidsonii, E. deflexum, E. deserticola, E. desertorum, E. diatomaceum, E. diclinum, E. divaricatum, E. douglasii, E. eastwoodianum, E. effusum, E. elatum, E. elegans, E. elongatum, E. ephedroides, E. eremicola, E. eremicum, E. ericifolium, E. esmeraldense, E. evanidum, E. exaltatum, E. exilifolium, E. fasciculatum, E. flavum, E. fusiforme, E. giganteum, E. gilmanii, E. glandulosum, E. gordonii, E. gossypinum, E. gracile, E. gracilipes, E. gracillimum, E. grande, E. greggii, E. gypsophilum, E. havardii, E. heermannii, E. helichrysoides, E. hemipterum, E. heracleoides, E. hieracifolium, E. hirtellum, E. hirtiflorum, E. hoffmannii, E. holmgrenii, E. hookeri, E. howellianum, E. hylophilum, E. incanum, E. inerme, E. inflatum, E. intrafractum, E. jamesii, E. jonesii, E. kelloggii, E. kennedyi, E. kingii, E. lachnogynum, E. lancifolium, E. latens, E. latifolium, E. lemmonii, E. leptocladon, E. leptophyllum, E. libertini, E. lobbii, E. loganum, E. lonchophyllum, E. longifolium, E. luteolum, E. maculatum, E. mancum, E. marifolium, E. mensicola, E. microthecum, E. mitophyllum, E. mohavense, E. molestum, E. mortonianum, E. multiflorum, E. natum, E. nealleyi, E. nervulosum, E. nidularium, E. niveum, E. nortonii, E. novonudum, E. nudum, E. nummulare, E. nutans, E. ochrocephalum, E. ordii, E. ostlundii, E. ovalifolium, E. palmerianum, E. panamintense, E. panguicense, E. parishii, E. parvifolium, E. pauciflorum, E. pelinophilum, E. pendulum, E. pharnaceoides, E. plumatella, E. polycladon, E. polypodum, E. prattenianum, E. prociduum, E. pulchrum, E. pusillum, E. pyrolifolium, E. racemosum, E. reniforme, E. ripleyi, E. rixfordii, E. robustum, E. rosense, E. roseum, E. rotundifolium, E. rubricaule, E. rupinum, E. salicornioides, E. saxatile, E. scabrellum, E. scopulorum, E. shockleyi, E. siskiyouense, E. smithii, E. soliceps, E. soredium, E. spathulatum, E. spectabile, E. spergulinum, E. sphaerocephalum, E. strictum, E. subreniforme, E. suffruticosum, E. temblorense, E. tenellum, E. ternatum, E. terrenatum, E. thomasii, E. thompsoniae, E. thornei, E. thurberi, E. thymoides, E. tiehmii, E. tomentosum, E. trichopes, E. tripodum, E. truncatum, E. tumulosum, E. twisselmannii, E. umbellatum, E. ursinum, E. vestitum, E. villiflorum, E. vimineum, E. viridescens, E. viridulum, E. viscidulum, E. visheri, E. watsonii, E. wetherillii, E. wootonii, E. wrightii, E. zionis
E. abertianum, E. acaule, E. alatum, E. aliquantum, E. allenii, E. alpinum, E. ammophilum, E. ampullaceum, E. androsaceum, E. anemophilum, E. angulosum, E. annuum, E. apiculatum, E. apricum, E. arborescens, E. arcuatum, E. aretioides, E. argillosum, E. argophyllum, E. arizonicum, E. artificis, E. atrorubens, E. baileyi, E. batemanii, E. bicolor, E. bifurcatum, E. brachyanthum, E. brachypodum, E. brandegeei, E. breedlovei, E. brevicaule, E. butterworthianum, E. caespitosum, E. capillare, E. cernuum, E. chrysops, E. cinereum, E. cithariforme, E. clavatum, E. clavellatum, E. codium, E. collinum, E. coloradense, E. compositum, E. concinnum, E. congdonii, E. contiguum, E. contortum, E. correllii, E. corymbosum, E. covilleanum, E. crocatum, E. cronquistii, E. crosbyae, E. cusickii, E. darrovii, E. dasyanthemum, E. davidsonii, E. deflexum, E. deserticola, E. desertorum, E. diatomaceum, E. diclinum, E. divaricatum, E. douglasii, E. eastwoodianum, E. effusum, E. elatum, E. elegans, E. elongatum, E. ephedroides, E. eremicola, E. eremicum, E. ericifolium, E. esmeraldense, E. evanidum, E. exaltatum, E. exilifolium, E. fasciculatum, E. flavum, E. fusiforme, E. giganteum, E. gilmanii, E. glandulosum, E. gordonii, E. gossypinum, E. gracile, E. gracilipes, E. gracillimum, E. grande, E. greggii, E. gypsophilum, E. havardii, E. heermannii, E. helichrysoides, E. hemipterum, E. heracleoides, E. hieracifolium, E. hirtellum, E. hirtiflorum, E. hoffmannii, E. holmgrenii, E. hookeri, E. howellianum, E. hylophilum, E. incanum, E. inerme, E. inflatum, E. intrafractum, E. jamesii, E. jonesii, E. kelloggii, E. kennedyi, E. kingii, E. lachnogynum, E. lancifolium, E. latens, E. latifolium, E. lemmonii, E. leptocladon, E. leptophyllum, E. libertini, E. lobbii, E. loganum, E. lonchophyllum, E. longifolium, E. luteolum, E. maculatum, E. mancum, E. marifolium, E. mensicola, E. microthecum, E. mitophyllum, E. mohavense, E. molestum, E. mortonianum, E. multiflorum, E. natum, E. nealleyi, E. nervulosum, E. nidularium, E. niveum, E. nortonii, E. novonudum, E. nudum, E. nummulare, E. nutans, E. ochrocephalum, E. ordii, E. ostlundii, E. ovalifolium, E. palmerianum, E. panamintense, E. panguicense, E. parishii, E. parvifolium, E. pauciflorum, E. pelinophilum, E. pendulum, E. pharnaceoides, E. plumatella, E. polycladon, E. polypodum, E. prattenianum, E. prociduum, E. pulchrum, E. pusillum, E. pyrolifolium, E. racemosum, E. reniforme, E. ripleyi, E. rixfordii, E. robustum, E. rosense, E. roseum, E. rotundifolium, E. rubricaule, E. rupinum, E. salicornioides, E. saxatile, E. scabrellum, E. scopulorum, E. shockleyi, E. siskiyouense, E. smithii, E. soredium, E. spathulatum, E. spectabile, E. spergulinum, E. sphaerocephalum, E. strictum, E. subreniforme, E. suffruticosum, E. temblorense, E. tenellum, E. ternatum, E. terrenatum, E. thomasii, E. thompsoniae, E. thornei, E. thurberi, E. thymoides, E. tiehmii, E. tomentosum, E. trichopes, E. tripodum, E. truncatum, E. tumulosum, E. twisselmannii, E. umbellatum, E. ursinum, E. vestitum, E. villiflorum, E. vimineum, E. viridescens, E. viridulum, E. viscidulum, E. visheri, E. watsonii, E. wetherillii, E. wootonii, E. wrightii, E. zionis
Synonyms E. ochrocephalum subsp. chrysops, E. ovalifolium var. chrysops
Name authority Rydberg: Fl. Rocky Mts., 220, 1061. (1917) Reveal & Björk: Brittonia 56: 296, fig. 1. (2004)
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