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bare-stem buckwheat, barestem wild buckwheat, naked buckwheat, naked wild buckwheat, nude buckwheat
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kidney-shape wild buckwheat, kidneyshape buckwheat
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| Herbs, mostly erect, infrequently scapose, (0.5–)1–15(–20) × 0.5–3 dm, glabrous or floccose to tomentose, usually greenish, occasionally grayish. |
Herbs, erect or slight spreading, annual, 1–5(–7) dm, mostly glabrous, usually greenish. |
spreading to erect, with or without persistent leaf bases, up to 1/4 height of plant; caudex stems absent; aerial flowering stems erect to spreading, slender to stout, solid or hollow, occasionally fistulose, 0.3–4(–10) dm, glabrous or lanate to tomentose or floccose. |
caudex absent; aerial flowering stems erect, solid, not fistulose, (0.2–)0.5–1.5 dm, glabrous except floccose to glabrescent proximally. |
basal or sheathing up stem 0.5–4 dm; petiole 1–10 cm, glabrous or tomentose; blade oblanceolate to elliptic or ovate, 1–6 × (0.3–)1–4 cm, densely white-lanate or tomentose abaxially, tomentose to floccose or subglabrous to glabrous adaxially, margins plane or undulate-crisped. |
basal; petiole (1–)2–6 cm, mostly floccose; blade reniform to orbiculate, (0.3–)1–3.5(–4) × (0.3–)1–4(–5) cm, densely white-tomentose abaxially, hirsute to floccose or glabrous and greenish adaxially, margins plane. |
cymose, rarely umbellate or capitate, 2–100(–150) × 2–40(–80) cm; branches usually dichotomous, glabrous or tomentose to floccose or sparsely pubescent; bracts 3, scalelike, 0.5–3(–5) mm. |
cymose, open to somewhat diffuse, 5–40(–50) × 5–35 cm; branches glabrous; bracts 3, scalelike, 1–3 × 1.5–2.5 mm. |
absent. |
erect or nearly so, straight, filiform, 0.5–2.5 cm, glabrous or rarely floccose at or before anthesis. |
1 per node or 2–10 per cluster, turbinate to turbinate-campanulate, (2.5–)3–5(–7) × (1.5–)2–4 mm, glabrous, tomentose, or sparsely pubescent; teeth 5–8, 0.2–0.6 mm. |
turbinate, 0.5–1 × 0.6–0.9 mm, glabrous; teeth 5, erect, 0.2–0.4 mm. |
(1.5–)2–4 mm; perianth white or yellow, sometimes pink or rose, glabrous or pubescent; tepals connate proximal 1/4, monomorphic, oblong to obovate; stamens exserted, 2–5 mm; filaments pilose proximally. |
0.6–1.6(–2) mm; perianth white to rose or rarely yellowish, glabrous or puberulent to sparsely hirsute; tepals monomorphic, lanceolate to spatulate or elliptic to ovate; stamens included to slightly exserted, 0.7–1.4 mm; filaments glabrous. |
light brown to brown, 1.5–3.5 mm, glabrous. |
light to dark brown, 3-gonous, 1.7–2 mm, glabrous. |
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Flowering Apr–Oct. |
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Sandy to gypsophilous or clayey flats and slopes, saltbush, greasewood, blackbrush, and creosote bush communities, oak and pinyon-juniper woodlands |
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800-2100 m (2600-6900 ft) |
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CA; NV; OR; WA; nw Mexico
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AZ; NM; UT |
Varieties 13 (13 in the flora). Several local groups of Native Americans in California used members of this species in a variety of ways. S. A. Barrett and E. W. Gifford (1933) and S. M. Schenck and E. W. Gifford (1952) reported the consumption of raw young stems that are rather moist and tasty, although there is a sour aftertaste. The Kawaiisu used the hollow stems (probably var. westonii, rather than var. pauciflorum) as drinking tubes and as pipes (M. L. Zigmond 1981). Zigmond reported also that the roots of var. pauciflorum are used as an infusion for coughs. Members of Eriogonum nudum are food plants for the Bauer’s dotted-blue butterfly (Euphilotes baueri), the Pacific dotted-blue (E. enoptes), the gorgon copper (Gaeides gorgon), and the Mormon metalmark (Apodemia mormo). (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Eriogonum subreniforme is generally rare to infrequent throughout its scattered range in northern Arizona (Apache, Coconino, Mohave, and Navajo counties), northwestern New Mexico (McKinley and San Juan counties), and southern Utah (Garfield, Kane, and Washington counties). Even in a “good” year, the plants are rarely common and never weedy. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
1. Involucres and inflorescence branches tomentose to floccose; leaves usually basal | → 2 |
1. Involucres and inflorescence branches glabrous or, if pubescent, leaves sheathing up stems | → 3 |
2. Perianths white; flowering stems lanate to tomentose; leaf blades 2-3.5 cm; s Sierra Nevada | var. regirivum |
2. Perianths yellow or white to rose; flowering stems tomentose to floccose; leaf blades 2-4 cm; s Oregon, n California, wc Nevada | var. oblongifolium |
3. Leaves sheathing up stems, margins often strongly undulate-crisped | → 4 |
3. Leaves basal, margins plane or slightly undulate-crisped | → 8 |
4. Flowering stems tomentose | → 5 |
4. Flowering stems glabrous | → 6 |
5. Perianths pubescent; flowers 1.5-2 mm; involucres 3-4 mm; Sierra Nevada, California | var. regirivum |
5. Perianths glabrous; flowers 3-4 mm; involucres 4-6 mm; Coast Ranges, California | var. decurrens |
6. Leaf blades densely lanate abaxially, tomentose adaxially; involucres 5-10 per cluster; Sierra Nevada, California | var. murinum |
6. Leaf blades tomentose abaxially, less so to floccose, glabrous, or nearly so adaxially; involucres 1 per node or 2-5 per cluster; widespread, Coast Ranges, California | → 7 |
7. Flowering stems occasionally fistulose; involucres (2-)3-5 per cluster; perianths white to pink, rarely yellowish | var. auriculatum |
7. Flowering stems strongly fistulose; involucres 1 per node; perianths pale yellowish white to yellow or white | var. indictum |
8. Involucres 1(-2) per cluster | var. westonii |
8. Involucres 2-10 per cluster | → 12 |
9. Flowering stems fistulose; perianths yellow, infrequently white; c California | var. westonii |
9. Flowering stems not fistulose or, if so, plants of sw California; perianths white, rarely yellow | → 10 |
10. Perianths pubescent or, infrequently, glabrous; s California | var. pauciflorum |
10. Flowers glabrous; sw Oregon, n California, Nevada | → 11 |
11. Leaf blades 1-5 cm; sw Oregon, n California (including w slope of Sierra Nevada), Washington | var. nudum |
11. Leaf blades 1-2 cm; Sierra Nevada of California and adjacent desert ranges of wc Nevada | var. deductum |
12. Perianths pubescent, often yellow | → 13 |
12. Perianths usually glabrous abaxially, white, rarely yellow | → 14 |
13. Flowering stems not fistulose; leaf blades floccose or glabrous adaxially, margins plane; plants of nonaridregions | var. pubiflorum |
13. Flowering stems slightly to distinctly fistulose; leaf blades tomentose to floccose adaxially, margins undulate-crisped; plants of arid regions | var. westonii |
14. Inflorescences capitate or nearly so; alpine, Sierra Nevada | E. nudumvar. scapigerum |
14. Inflorescences cymose or, if capitate, not alpine. | → 15 |
15. Involucres 1(-2) per cluster, 5- 7 mm; mountains of s California | var. pauciflorum |
15. Involucres 2-10 per cluster, 3-5 mm; mountains and foothills of c and n California or coastal bluffs. [16. Shifted to left margin—Ed.] | → 16 |
16. Inflorescences cymose and branched 2 or more times; involucres 2-5 per cluster; mountains and foothills of c and n California, Oregon, and Washington. | var. nudum |
16. Inflorescences capitate or cymose and branched 1-2 times; involucres 5-10 per cluster; coastal bluffs, sw Oregon, ne California | var. paralinum |
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| FNA vol. 5, p. 309. |
FNA vol. 5, p. 405. |
| Polygonaceae > subfam. Eriogonoideae > Eriogonum > subg. Eucycla |
Polygonaceae > subfam. Eriogonoideae > Eriogonum > subg. Ganysma |
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. 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. soliceps, E. soredium, E. spathulatum, E. spectabile, E. spergulinum, E. sphaerocephalum, E. strictum, 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. nudum var. auriculatum, E. nudum var. decurrens, E. nudum var. deductum, E. nudum var. indictum, E. nudum var. murinum, E. nudum var. nudum, E. nudum var. oblongifolium, E. nudum var. paralinum, E. nudum var. pauciflorum, E. nudum var. pubiflorum, E. nudum var. regirivum, E. nudum var. westonii, E. nudumvar. scapigerum |
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| E. latifolium subsp. nudum |
E. filicaule |
| Douglas ex Bentham: Trans. Linn. Soc. London 17: 413. (1836) |
S. Watson: Proc. Amer. Acad. Arts 12: 260. (1877) |
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CA
OR
WA
Flora NW
PNW Herbaria
WildflowerSearch
iNaturalist
USDA Plants Database
