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spurry buckwheat, spurry wild buckwheat, wild buckwheat

limestone buckwheat, limestone wild buckwheat

Habit Herbs, prostrate to spreading or erect, annual, 0.5–4 dm, glabrous or glandular and short-hispid, greenish, grayish, or reddish. Herbs, spreading, not scapose, 2.5–4.5 × 1–2.5 dm, glabrous, grayish.
Stems

caudex absent;

aerial flowering stems prostrate to erect, solid, not fistulose, 0.1–0.5 dm, glabrous or glandular and short-hispid.

spreading, without persistent leaf bases, up to 1/4 height of plant;

caudex stems absent;

aerial flowering stems erect, slender, solid, not fistulose, 0.5–2 dm, glabrous, pubescent among leaves.

Leaves

basal and cauline;

basal: petiole 0.05–0.3 cm, hispid, blade linear, (0.3–)1–3(–4) × 0.05–0.3 cm, short-hispid, margins plane or revolute, ciliate;

cauline sessile, blade linear, 0.3–2.5 × 0.05–0.3 cm, similar to basal blade.

basal, 1 per node;

petiole 1–2.5 cm, tomentose;

blade ovate to round, 1.2–2(–2.5) × 1–1.7(–2) cm, tomentose on both surfaces, margins plane.

Inflorescences

cymose, open to diffuse, 4–25 × 5–35 cm;

branches sparsely hispid to puberulent, internodes usually glandular;

bracts 3–6, semileaflike, 2–10 × 0.5–2 mm.

cymose, 1.2–2.5 × 1–2 dm;

branches dichotomous, glabrous;

bracts 3, scalelike, triangular, 1–3 mm.

Peduncles

erect, straight, filiform, 0.4–1.5 cm, glabrous.

absent.

Involucres

turbinate, 0.5–1 × 0.4–0.8 mm, glabrous;

teeth 4, erect, 0.2–0.4 mm.

(1–)2–5 per cluster, turbinate, 2.5–4(–4.5) × 2–2.5 mm, glabrous;

teeth 5, erect, 0.4–0.8 mm.

Flowers

1.5–3.5 mm;

perianth white with greenish to reddish midribs, becoming pinkish to rose, glabrous or sparsely pubescent;

tepals monomorphic, oblong;

stamens included, 0.5–2 mm;

filaments usually glabrous.

2.5–3 mm;

perianth white, glabrous;

tepals connate proximal 1/5, monomorphic, obovate;

stamens exserted, 2.5–3.5 mm;

filaments pilose proximally.

Achenes

brown to blackish, lenticular, 1.5–2.3 mm, glabrous.

light brown to brown, 2.5–3 mm, glabrous.

Eriogonum spergulinum

Eriogonum eremicum

Phenology Flowering Jun–Sep.
Habitat Gravelly dolomite flats, saltbush communities, pinyon-juniper woodlands
Elevation 1600-2100 m (5200-6900 ft)
Distribution
from FNA
CA; ID; NV; OR
[WildflowerSearch map]
[BONAP county map]
from FNA
UT
[BONAP county map]
Discussion

Varieties 3 (3 in the flora).

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

Of conservation concern.

Eriogonum eremicum is the dolomitic counterpart to the silty-clay species E. batemanii of eastern Utah and western Colorado. The limestone wild buckwheat is known from a small area in southwestern Millard County and adjacent northern Beaver County of western Utah.

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

Key
1. Branch internodes not glandular; plants prostrate to ascending; s Sierra Nevada, California
var. pratense
1. Branch internodes glandular; plants erect
→ 2
2. Flowers 1.5-2.5 mm; Transverse, Sierra Nevada, and North Coast Ranges of nw, sw, and e California and w Nevada, also s Oregon, c Idaho
var. reddingianum
2. Flowers 2.5-3.5 mm; c Sierra Nevada, California
var. spergulinum
Source FNA vol. 5, p. 409. FNA vol. 5, p. 272.
Parent taxa Polygonaceae > subfam. Eriogonoideae > Eriogonum > subg. Ganysma 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. 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. 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. 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. spergulinum var. pratense, E. spergulinum var. reddingianum, E. spergulinum var. spergulinum
Synonyms Oxytheca spergulina E. batemanii var. eremicum
Name authority A. Gray: Proc. Amer. Acad. Arts 7: 389. (1868) Reveal: Phytologia 23: 165. (1972)
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