ocherflower wild buckwheat, white woolly buckwheat, whitewoolly wild buckwheat
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Railroad Canyon wild buckwheat
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Herbs, matted, scapose, 0.5–4.5(–5) × 0.5–3 dm, glabrous or glandular, grayish. |
Herbs, matted, not scapose, (0.02–)0.04–0.06(–0.08) × (0.5–)1–3(–4.5) dm, tomentose, grayish. |
matted or spreading, occasionally with persistent leaf bases, up to 1/5 height of plant; caudex stems matted or absent; aerial flowering stems scapelike, erect, slender, solid, not fistulose, (0.5–)1.5–4.5(–5) dm, glabrous, rarely slightly floccose, or glandular below inflorescence. |
spreading, with persistent leaf bases, up to 1/8 height of plant; caudex stems matted; aerial flowering stems absent. |
basal, fasciculate in terminal tufts, sometimes 1 per node and sheathing up stem 1–4 cm; petiole 1–4(–5) cm, tomentose; blade oblanceolate or lanceolate to elliptic, oblong, or ovate to obovate, (0.6–)1–3.5(–4) × (0.3–)0.5–1.5 cm, densely tomentose abaxially, only slightly less so adaxially, 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. |
capitate, 1.5–2.5 cm; branches absent; bracts 3, scalelike, narrowly triangular, 1–2.5 mm. |
capitate, 0.5–0.9 cm; branches absent; bracts absent. |
absent or erect, slender, 0.1–0.5(–0.6) cm, glabrous. |
erect, (1.5–)3–5(–7) cm, thinly tomentose, arising directly from caudices. |
5–8 per cluster, turbinate to campanulate, 3.5–5.5(–6) × (1.5–)2–4.5(–5) mm, rigid, floccose at least on teeth, occasionally glandular, rarely glabrous; teeth 6–8, erect, 0.5–1 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. |
1.5–3 mm; perianth yellow, glabrous or weakly glandular abaxially; tepals connate proximally, monomorphic, broadly oblong; stamens exserted, 2.5–3.5(–4) 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. |
light brown, (1.5–)2–3 mm, glabrous. |
light brown, 2.5–3.5 mm, glabrous except for slightly papillose beak. |
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Flowering Jul–Aug. |
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Gravelly soil, sagebrush communities |
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2500-2600 m (8200-8500 ft) |
CA; ID; NV; OR
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ID; MT |
Varieties 2 (2 in the flora). Variety ochrocephalum is occasionally seen in rock gardens, and var. calcareum is worthy of cultivation. (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.) |
1. Scapes glandular at least proximal to inflorescence; ne California, nw Nevada | var. ochrocephalum |
1. Scapes glabrous or, rarely, slightly floccose; sw Idaho, se Oregon, wc Nevada | var. calcareum |
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FNA vol. 5, p. 283. |
FNA vol. 5, p. 278. |
Polygonaceae > subfam. Eriogonoideae > Eriogonum > subg. Eucycla |
Polygonaceae > subfam. Eriogonoideae > Eriogonum > subg. Eucycla |
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. 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 |
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S. Watson: in W. H. Brewer et al., Bot. California 2: 480. (1880) |
Reveal & Björk: Brittonia 56: 296, fig. 1. (2004) |
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