hoary buckwheat, hoary wild buckwheat, rock buckwheat
|
cushion buckwheat, cushion wild buckwheat, oval-leaf buckwheat, oval-leaf eriogonum
|
Herbs, loosely to densely matted, not scapose, (1–)2–4 × 0.5–2 dm, densely white- or grayish-lanate to tomentose or floccose. |
Herbs, forming pulvinate to cespitose maps, usually scapose, 0.2–3 × 0.5–5 dm, floccose to tomentose or lanate. |
spreading, often with persistent leaf bases, up to 1/4 height of plant; caudex stems matted, decumbent to spreading; aerial flowering stems spreading to erect, slender, solid, not fistulose, 0.5–1.5 dm, lanate to tomentose or floccose. |
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 or sheathing up stems 4 cm, 1 per node or fasciculate at tips of caudex branches; proximal leaves: petiole 1–3(–4) cm, tomentose, blade obovate to rounded, 1–2(–2.5) × 1–2 cm, lanate to tomentose; distal leaves sessile, blade elliptic to rounded, 0.3–1 × 0.3–1 cm, lanate to tomentose. |
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, 10–25 × 5–12 cm; branches dichotomous, lanate to tomentose or floccose; bracts 3–4, scalelike, triangular, 1.5–7 mm. |
capitate or rarely umbellate, 0.7–5(–7) × 1.5–5 cm; bracts 3, scalelike, linear to triangular, 0.8–4 mm. |
absent. |
absent. |
1 per node, turbinate, 3–4 × 2–3 mm, tomentose to floccose; teeth 5–6, erect, 0.8–1.5 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. |
(3–)5–7 mm, including elongate, sharply triangular, slightly winged, stipelike base; perianth white to rose or yellowish, glabrous; tepals connate proximally, dimorphic, those of outer whorl oblanceolate to lanceolate, 3–5 × 1.5–2 mm, those of inner whorl obovate, 4–6 × 2–3 mm; stamens included to slightly exserted, 2.5–5 mm; filaments pilose proximally. |
(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. |
3-gonous, nearly winged, 3.5–4 mm, glabrous. |
light brown to brown, 2–3 mm, glabrous. |
= 40. |
|
|
|
|
|
Flowering May–Oct. |
|
Decomposed granitic or volcanic flats, slopes, and ridges, chaparral, saltbush, and sagebrush communities, pinyon-juniper and montane conifer woodlands |
|
(300-)800-3400(-3500) m ((1000-)2600-11200(-11500) ft) |
|
CA; NV
|
AZ; CA; CO; ID; MT; NM; NV; OR; UT; WA; WY; AB; BC
|
Eriogonum saxatile is found mainly in arid mountains of California (Fresno, Inyo, Kern, Los Angeles, Mono, Monterey, Riverside, San Benito, San Bernardino, Santa Barbara, Tulare, and Ventura counties) and Nevada (Esmeralda and western Nye counties). The plants vary considerably as to robustness, degree of branching, and sprawl of the caudex. The size and position of the leaves also vary, as does the density of tomentum on the blades. Flower color varies from white to rose or yellowish, but the deep yellow of E. crocatum is never seen in E. saxatile. The species is frequently cultivated and is an excellent plant for the rock garden. (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.) |
|
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 |
|
FNA vol. 5, p. 324. |
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. 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. 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 |
|
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. saxatile subsp. multicaule |
Eucycla ovalifolia |
S. Watson: Proc. Amer. Acad. Arts 12: 267. (1877) |
Nuttall: J. Acad. Nat. Sci. Philadelphia 7: 50, plate 8, fig. 1. (1834) |
| |