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Havard's buckwheat, Havard's wild buckwheat
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cushion buckwheat, cushion wild buckwheat, oval-leaf buckwheat, oval-leaf eriogonum
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| Herbs, erect, not scapose, (2–)3–6 × 1.5–4 dm, glabrous, grayish. |
Herbs, forming pulvinate to cespitose maps, usually scapose, 0.2–3 × 0.5–5 dm, floccose to tomentose or lanate. |
spreading, without persistent leaf bases, up to 1/5 height of plant; caudex stems absent; aerial flowering stems erect, slender, solid, not fistulose, 0.5–2.5 dm, glabrous, tomentose among leaves. |
decumbent to spreading, with persistent leaf bases, up to 1/5 height of plant; caudex stems matted to spreading; aerial flowering stems scapelike, spreading to erect, infrequently decumbent to ascending, slender, solid, not fistulose, 0.03–4 dm, floccose to tomentose or lanate or nearly glabrous. |
basal, 1 per node; petiole 0.5–1.5(–2.5) cm, tomentose; blade oblanceolate to elliptic, 1–3(–5) × 0.2–1(–1.3) cm, densely white- or silvery-tomentose on both surfaces, margins plane. |
basal, 1 per node; petiole not twisted or curled, 0.1–10 cm, mostly tomentose; blade oblanceolate to elliptic or spatulate to rounded, 0.2–6 × (0.1–)0.2–1.5 cm, lanate to tomentose or floccose, sometimes less so adaxially, margins plane, occasionally brownish. |
cymose, open, divided 3–10 times, 10–40 × 10–30 cm; branches dichotomous, glabrous; bracts 3, scalelike, triangular, 1–2 mm. |
capitate or rarely umbellate, 0.7–5(–7) × 1.5–5 cm; bracts 3, scalelike, linear to triangular, 0.8–4 mm. |
erect, slender, 0.5–6 cm. |
absent. |
1 per node, campanulate, 1.5–2.5 × (1.5–)2–3 mm, tomentose; teeth 5, erect, 0.5–0.8 mm. |
1 per node or (2–)3–15 per cluster, turbinate to turbinate-campanulate, (2–)3.5–5(–8) × 2–4 mm, tomentose to floccose; teeth 5, erect, 0.1–1 mm. |
2.5–3 mm; perianth yellow, densely white-pubescent; tepals connate proximal 1/3, monomorphic, lanceolate; stamens exserted, 2.5–3.5 mm; filaments glabrous. |
(2.5–)3–6(–7) mm; perianth yellow or white to cream, rose, red, or purple, glabrous; tepals connate proximally, dimorphic, those of outer whorl usually oval to orbiculate, 2–4 × 2–4 mm, those of inner whorl oblanceolate to elliptic, 3–7 × 0.8–1.5 mm; stamens mostly included, 1–3 mm; filaments pilose proximally. |
brown, 2–2.5 mm, glabrous. |
light brown to brown, 2–3 mm, glabrous. |
= 40. |
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| Flowering May–Sep. |
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| Gravelly (often calcareous) or shaley to clayey or gypsum flats and outcrops, mixed grassland, creosote, and mesquite communities, juniper woodlands |
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| (400-)800-1800(-2100) m ((1300-)2600-5900(-6900) ft) |
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NM; TX
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AZ; CA; CO; ID; MT; NM; NV; OR; UT; WA; WY; AB; BC
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Eriogonum havardii is infrequent in southeastern New Mexico (Chaves, Eddy, Lea, Lincoln, Otero, and Socorro counties) and western Texas (Brewster, Culberson, El Paso, Hudspeth, Pecos, Presidio, Terrell, Val Verde, and Winkler counties). The leaf blades are demarcated by depressed lines along their entire length, appearing as a series of folds. The bright yellow of the flowers is seen only by looking at the adaxial surface of the tepals, the abaxial surface being wholly obscured by dense white hairs. The species is worthy of cultivation. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Varieties 11 (11 in the flora). Eriogonum ovalifolium is a highly diverse and widespread complex of generally distinct but sometimes intergrading varieties. Several varieties are in cultivation and make worthy additions, especially to the rock garden. The dimorphic nature of the tepals is obvious only in fully mature flowers. In some populations of the more depauperate varieties, such as var. nivale and var. depressum, the tepals may not be as distinctly dimorphic. Nonetheless, the overall aspect of the species is unmistakable. There are several reports of traditional use of Eriogonum ovalifolium by Native Americans. P. Train et al. (1941) indicated that a decoction of the roots is used in Nevada for colds. R. V. Chamberlin (1911) reported that the Gosiute Indians in southwestern Utah used it in a poultice or wash to treat venereal diseases. Members of the species are food plants for Bauer’s dotted-blue butterfly (Euphilotes baueri). (Discussion copyrighted by Flora of North America; reprinted with permission.) |
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1. Leaf blades 0.2-1.2(-2) cm; scapes usually 0.3-5(-9) cm, rarely longer; involucres usually 2-4.5 (rarely 5-8) mm | → 2 |
1. Leaf blades usually 1-6 cm, occasionally shorter; scapes (1-)5-30(-40) cm; involucres (3.5-)4-6.5(-8) mm | → 8 |
2. Perianths yellow; c Nevada and ec California | var. caelestinum |
2. Perianths white, sometimes rose, purple, or red; widespread | → 3 |
| → 4 |
3. Leaf margins not brownish or, if so, plants of high elevation, central Sierra Nevada | → 5 |
4. Leaf blades densely lanate, margins brownish | var. eximium |
4. Leaf blades tomentose, margins not brownish | var. williamsiae |
| → 6 |
| → 7 |
6. Leaf blades white-lanate; San Bernardino Mountains, s California | var. vineum |
6. Leaf blades tomentose to floccose; s Sierra Nevada, California | var. monarchense |
7. Leaf blades greenish and thinly tomentose at least adaxially, usually elliptic, infrequently oblong to spatulate; scapes often suberect to decumbent, usually thinly floccose; Rocky Mountains of Alberta, Idaho, Montana, and Wyoming, desert ranges of ne Nevada and e Oregon | var. depressum |
7. Leaves densely lanate to white-tomentose on both surfaces or only slightly less so adaxially, not at all greenish, usually round; scapes usually erect, lanate or tomentose; Sierra-Cascade cordillera, desert ranges of Great Basin | var. nivale |
8. Scapes usually 1-5(-7.5) cm; leaf margins brownish; rare, wc Nevada, ec California | → 9 |
8. Scapes usually (4-)7-30(-40) cm, rarely shorter; leaf margins only rarely brownish; widespread | → 10 |
9. Leaf blades densely lanate, brownish margins | var. eximium |
9. Leaf blades white-tomentose, margins not brownish | var. williamsiae |
10. Inflorescences umbellate, branches 1-3 cm; c Idaho and Montana | var. pansum |
10. Inflorescences capitate, branches absent; widespread | → 11 |
11. Flowers 5-7 mm; involucres 5-7 mm; s California | var. vineum |
11. Flowers 4-5 mm; involucres 4-6.5 mm; widespread | → 12 |
| var. ovalifolium |
12. Perianths white to rose or purple. | → 13 |
13. Leaf blades spatulate, oblong, or obovate to oval; scapes (4-)5-20 cm; widespread | var. purpureum |
13. Leaf blades oblanceolate to narrowly elliptic; scapes (15-)20-30(-40) cm; Montana and Wyoming | var. ochroleucum |
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| FNA vol. 5, p. 288. |
FNA vol. 5, p. 319. |
| 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. 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. 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 |
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E. ovalifolium var. caelestinum, E. ovalifolium var. depressum, E. ovalifolium var. eximium, E. ovalifolium var. monarchense, E. ovalifolium var. nivale, E. ovalifolium var. ochroleucum, E. ovalifolium var. ovalifolium, E. ovalifolium var. pansum, E. ovalifolium var. purpureum, E. ovalifolium var. vineum, E. ovalifolium var. williamsiae |
| E. leucophyllum |
Eucycla ovalifolia |
| S. Watson: Proc. Amer. Acad. Arts 18: 194. (1883) |
Nuttall: J. Acad. Nat. Sci. Philadelphia 7: 50, plate 8, fig. 1. (1834) |
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BC, 
CA, 
OR, 
WA
Flora NW, 
PNW Herbaria, 
SW CO Wildflowers
WildflowerSearch
iNaturalist (observations)
USDA Plants Database
