angle stermed buckwheat, spotted buckwheat, spotted wild buckwheat
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lance-leaf wild buckwheat, lanceleaf buckwheat
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Herbs, erect to spreading, annual, 1–2(–3) dm, tomentose, greenish to reddish. |
Shrubs, spreading, not scapose, 3.5–8(–10) × 5–10(–13) dm, grayish-tomentose, grayish. |
caudex absent; aerial flowering stems erect, not striated or angled, solid, not fistulose, 0.1–0.5 dm, tomentose. |
spreading, usually without persistent leaf bases, sheathing up to 1/2 or more height of plant; caudex stems absent; aerial flowering stems erect to spreading, slender, solid, not fistulose, 0.5–1.2 dm, tomentose. |
basal and cauline; basal: petiole 0.3–1 cm, floccose, blade lanceolate to obovate, 1–3(–4) × 1–1.5(–2) cm, tomentose abaxially, sparsely floccose to glabrate and grayish to greenish adaxially, margins entire or infrequently crenulate; cauline sessile, blade lanceolate to oblanceolate, 0.5–2 × 0.3–1 cm, similar to basal blade. |
cauline, 1 per node; petiole 0.3–0.6 cm, tomentose; blade lanceolate to elliptic, 3–5 × 0.5–2 cm, densely silvery-tomentose on both surfaces or rarely less so to subglabrous and greenish abaxially, margins plane or slightly revolute, sometimes crenulate. |
cymose, open, 5–25 × 10–30 cm; branches tomentose; bracts 3, scalelike, 0.5–2.5 × 1–2 mm. |
cymose, often compact, (3–)6–14 × 3–10 dm; branches dichtomous, tomentose to subglabrous; bracts 3, scalelike, linear, and 1.5–3 mm, or leaflike, 10–15 mm, and similar to leaf blades. |
spreading, straight or nearly so, filiform, (0.5–)1–3 cm, glandular-puberulent. |
absent. |
campanulate, 1–1.5(–2) × 1.5–3(–3.5) mm, glandular-puberulent; teeth 5, erect, 0.4–0.8 mm. |
1 per node, turbinate, 2.5–3 × 1.5–2 mm; teeth 5, erect, 0.4–1 mm. |
1–2.5 mm; perianth white to yellow, becoming pink or red, with a conspicuous rose-purple spot on each outer tepal, glandular-puberulent; tepals dimorphic, those of outer whorl elliptic to roundish or obovate, inflated from base to middle, those of inner whorl lanceolate; stamens included, 1–1.5(–2) mm; filaments pilose proximally. |
(2–)2.5–3.5 mm; perianth white to cream, glabrous; tepals connate proximal 1/4, essentially monomorphic, spatulate; stamens exserted, 1.5–4.5 mm; filaments glabrous or slightly pilose proximally. |
brown, 3-gonous, 1–1.5 mm, glabrous. |
brown, 2–2.5 mm, glabrous. |
= 40. |
= 40. |
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Flowering Apr–Nov. |
Flowering Jul–Oct. |
Sandy to gravelly or clayey flats and slopes, mixed grassland, saltbush, creosote bush, and sagebrush communities, pinyon-juniper and montane conifer woodlands |
Heavy clay flats and slopes, mixed grassland and saltbush communities, juniper woodlands |
100-2500 m (300-8200 ft) |
1500-1800 m (4900-5900 ft) |
AZ; CA; ID; NM; NV; OR; UT; WA; Mexico (Baja California)
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UT |
Eriogonum maculatum is the most common and widespread expression of the E. angulosum complex, being found in Arizona, California, southwestern Idaho, Nevada, northwestern New Mexico, eastern Oregon, western Utah, and southeastern Washington. It is often common to abundant and may even be weedy, especially along roadsides intermixed with other annual wild buckwheats. The swollen bases of the outer tepals readily distinguish the species. The greatest concentrations of the spotted wild buckwheat are found in the Mojave Desert and the Great Basin. A specimen supposedly found on the “Laramie Plains” of Wyoming (Parry s.n., 1882, ISC) is discounted as to location. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Of conservation concern. Eriogonum lancifolium is known only from Mancos Shale hills and flats east and south of Wellington, in Carbon and Emery counties. The largest population is found on the flats south of Mounds Reef. S. L. Welsh et al. (2003) reduced this species to synonymy under E. corymbosum var. corymbosum. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
FNA vol. 5, p. 411. |
FNA vol. 5, p. 259. |
Polygonaceae > subfam. Eriogonoideae > Eriogonum > subg. Ganysma |
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. 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. 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. angulosum subsp. maculatum, E. angulosum var. maculatum, E. angulosum var. rectipes |
E. corymbosum var. davidsei |
A. Heller: Muhlenbergia 2: 188. (1906) |
Reveal & Brotherson: Great Basin Naturalist 27: 187, fig. 1. (1968) |
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