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bractless parsnip-flower wild buckwheat, parsnip-flower buckwheat, parsnip-flower eriogonum, parsnip-flower wild buckwheat, whorled buckwheat, whorled wild buckwheat, Wyeth wild buckwheat, Wyeth's buckwheat

Kaye's wild buckwheat

Habit Herbs, spreading mats, infrequently polygamodioecious, 1–6 × 2–10, tomentose to floccose. Herbs, spreading, not scapose, (2–)3–4.5 × 1–2(–3) dm, glabrous.
Stems

caudex spreading;

aerial flowering stems erect, slender, solid, not fistulose, arising at nodes of caudex branches and at distal nodes of short, nonflowering aerial branches, (0.5–)1–3(–4) dm, often with a whorl of (2–)5–10, linear to oblanceolate, leaflike bracts ca. midlength, 0.5–4(–5) × 0.2–1 (1.5) cm, mostly tomentose to floccose.

spreading, without persistent leaf bases, up to 1/3 height of plant;

caudex stems absent;

aerial flowering stems erect, slender, solid, not fistulose, 1–2 dm, pubescent among leaves.

Leaves

in loose rosettes;

petiole 0.5–3 cm, usually floccose;

blade usually linear to oblanceolate, (1.5–)2–5 × 0.2–1(–1.5) cm, densely white-lanate to tomentose on both surfaces or only abaxially, thinly floccose or glabrous and green adaxially, margins entire, plane.

basal or sheathing up stem 1–3 cm, 1 per node;

petiole 2.5–4 cm, tomentose;

blade narrowly elliptic, 2–5 × (0.8–)1–1.5(–1.7) cm, grayish-tomentose on both surfaces, margins plane.

Inflorescences

simple or compound-umbellate, rarely reduced and compact, 1–10 × 1–10 cm;

branches tomentose to floccose;

bracts 3–10 or more, leaflike at proximal node, oblanceolate to linear, 0.3–1 × 0.2–0.4 cm, usually scalelike distally, 1–5 × 0.5–2.5 mm.

cymose, 10–25 × 5–15 cm;

branches dichotomous, glabrous;

bracts 3, scalelike, triangular, 2–3 mm.

Peduncles

erect, slender, 0.2–1 cm, glabrous.

Involucres

1 per node, turbinate to campanulate, 3–4.5 × 2.5–5(–6) mm, tomentose, rarely glabrous;

teeth 6–12 or more, lobelike, reflexed, 1.5–5 mm.

1 per node, turbinate, 3.5–4 × 2–2.5 mm;

teeth 5(–6), erect, 0.5–0.8 mm.

Flowers

4–9 mm, including 1.5–3 mm stipelike base;

perianth white to cream or ochroleucous, glabrous;

tepals monomorphic, spatulate to oblong-ovate;

stamens exserted, 4–8 mm;

filaments pilose proximally.

3.5–4 mm;

perianth ochroleucous to pale yellow or, rarely, yellow, glabrous;

tepals connate proximal 1/5, monomorphic, oblong;

stamens exserted, 5–6 mm;

filaments pilose proximally.

Achenes

light to dark brown, (2–)3.5–5 mm, glabrous except for sparsely pubescent beak.

light brown, 3.5–4 mm, glabrous.

Eriogonum heracleoides

Eriogonum artificis

Phenology Flowering Aug–Sep.
Habitat Sandy to somewhat gravelly, volcanic slopes, mixed grassland and sagebrush communities, juniper woodlands
Elevation 1800-1900 m (5900-6200 ft)
Distribution
from FNA
CA; CO; ID; MT; NV; OR; UT; WA; WY; BC
[WildflowerSearch map]
[BONAP county map]
from FNA
UT
[BONAP county map]
Discussion

Varieties 2 (2 in the flora).

According to N. J. Turner et al. (1980), plants of the narrow-leaved phase (var. angustifolum) were used for colds, tuberculosis, and other lung ailments, and to treat infected cuts and sores (a decoction of roots and stems). V. F. Ray (1933) reported that a decoction of roots of such plants was taken for diarrhea. E. V. Steedman (1930) said that they were taken for stomachaches, used in steambaths to treat aching joints and muscles, and had a role in a purifying ceremony held in sweatlodges. Steedman also indicated that a strong decoction was taken by the Thompson Indians to treat syphilis.

(Discussion copyrighted by Flora of North America; reprinted with permission.)

Eriogonum artificis is known from a single location near Frisco in Beaver County. Care must be taken not to confuse Kaye’s wild buckwheat with glabrous forms of E. spathulatum that occur nearby. The flowers of E. artificis are usually pale yellow, but occasionally plants are found with cream-colored and distinctly yellow flowers.

(Discussion copyrighted by Flora of North America; reprinted with permission.)

Key
1. Flowering stems with a distinct whorl of leaflike bracts ca. midlength
var. heracleoides
1. Flowering stems bractless, or with 1 leaflike bract ca. midlength
var. leucophaeum
Source FNA vol. 5, p. 353. FNA vol. 5, p. 272.
Parent taxa Polygonaceae > subfam. Eriogonoideae > Eriogonum > subg. Oligogonum Polygonaceae > subfam. Eriogonoideae > Eriogonum > subg. Eucycla
Sibling taxa
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. 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. 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. 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
Subordinate taxa
E. heracleoides var. heracleoides, E. heracleoides var. leucophaeum
Name authority Nuttall: J. Acad. Nat. Sci. Philadelphia 7: 49, plate 7. (1834) Reveal: Phytologia 86: 121. (2004)
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