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Kearney's wild buckwheat, money buckwheat, money or Kearney wild buckwheat, money wild buckwheat, round leaf buckwheat

clumping buckwheat, cushion desert wild buckwheat, mat wild buckwheat, Matted buckwheat, Matted wild buckwheat

Habit Shrubs, spreading or rarely sprawling, not scapose, (1.5–)3–8(–10) × 3–12(–15) dm, tomentose or rarely floccose to glabrate, grayish. Herbs, matted, polygamodioecious, (0.1–)0.3–1 × 1–5(–12) dm.
Stems

decumbent to spreading, often without persistent leaf bases, up to 1/3 height or more of plant;

caudex stems absent or spreading in moving sand;

aerial flowering stems spreading, slender to stout, solid, not fistulose, 0.5–1 dm, tomentose to floccose.

caudex spreading;

aerial flowering stems scapelike, ascending to weakly erect, slender, solid, not fistulose, arising at nodes of caudex branches and at distal nodes of short, nonflowering aerial branches, (0.1–)0.3–0.8(–1) dm, mostly floccose or glabrous, without a whorl of bracts.

Leaves

cauline, 1 per node;

petiole 0.2–1 cm, tomentose to floccose;

blade broadly oblanceolate to elliptic or, rarely, orbiculate, (0.5–)1–3 × 0.4–1.2(–1.5) cm, densely white-tomentose abaxially, less so and greenish adaxially, margins plane.

in compact basal rosettes;

petiole 0.05–0.4(–0.7) cm, usually tomentose;

blade elliptic to obovate or nearly oval, 0.2–1(–1.5) × 0.15–0.4(–0.5) cm, grayish- to whitish-tomentose on both surfaces or less so and greenish adaxially, margins entire, plane.

Inflorescences

cymose, open, 5–50 × 5–80 cm;

branches dichotomous proximally, often with involucres racemosely arranged distally, tomentose to thinly floccose, rarely glabrate;

bracts 3, scalelike, linear to triangular, 0.5–6 mm.

capitate, 0.5–2 cm wide;

branches absent;

bracts absent immediately below involucre.

Peduncles

absent or erect, 0.5–3 cm, tomentose.

Involucres

1 per node, turbinate to turbinate-campanulate, 2–3 × 1.5–2.7 mm, tomentose or nearly so;

teeth 5, erect, 0.1–0.4 mm.

1 per node, campanulate, 2–3.5 × 2–4 mm;

teeth 6–9, lobelike, strongly reflexed, 2–3.5 mm.

Flowers

1.5–3 mm;

perianth white, glabrous;

tepals connate proximal 1/4, essentially monomorphic, obovate;

stamens slightly to long-exserted, 2–5 mm;

filaments subglabrous or sparsely puberulent proximally.

2.5–10 mm, including 0.5–1 mm stipelike base;

perianth yellow to reddish or rose, densely pilose to villous abaxially;

stamens exserted, 3–4 mm;

filaments pilose proximally; staminate flowers shorter, 2.5–4 mm, tepals monomorphic, oblong-oblanceolate; pistillate flowers 2.5–10 mm, tepals slightly dimorphic.

Achenes

light brown, 2–3 mm, glabrous.

light brown to brown, (3.5–)4–5 mm, glabrous or sparsely pubescent on beak.

2n

= 80.

Eriogonum nummulare

Eriogonum caespitosum

Phenology Flowering Jul–Oct. Flowering Apr–Jul.
Habitat Sandy to occasionally gravelly washes, flats, and slopes, saltbush and sagebrush communities, pinyon-juniper woodlands Sandy to gravelly flats and slopes, mixed grassland, saltbush, sagebrush, and mountain mahogany communities, oak, pinyon and/or juniper and montane conifer woodlands
Elevation 800-2600 m (2600-8500 ft) (1300-)1500-3000(-3700) m ((4300-)4900-9800(-12100) ft)
Distribution
from FNA
AZ; CA; NV; UT
[WildflowerSearch map]
[BONAP county map]
from FNA
AZ; CA; ID; MT; NV; OR; UT; WY
[WildflowerSearch map]
[BONAP county map]
Discussion

Eriogonum nummulare occurs primarily in the Intermountain West from Inyo, Lassen, and Mono counties in California eastward across central and southern Nevada to western and southern Utah. It is found also in northern Mohave and northwestern Coconino counties in Arizona.

This species is the food plant of the pallid dotted-blue butterfly (Euphilotes pallescens pallescens) and the Sand Mountain blue butterfly (Euphilotes pallescens arenamontana) is an unprotected subspecies restricted to Sand Mountain in Churchill County, Nevada, where its host plant, Eriogonum nummulare, currently is subject to continued destruction due to unrestricted off-road vehicle activities.

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

Eriogonum caespitosum is widespread and usually common. It is variable throughout its range but no taxonomic subunits have been noted. The functionally staminate plants can be morphologically different from the functionally pistillate ones, and that may cause some confusion in the field, especially when the latter are in fruit. The plants are widely cultivated and worthy of consideration for the rock or sand garden. Plants from along the eastern edge of the Sierra Nevada in southern Mono County, California, form large, dense mats and would be most attractive in the garden. The scapelike flowering stem is technically a peduncle, being a further reduction of the inflorescence from that seen in E. douglasii. A specimen supposedly gathered in Nebraska (Abbott s.n., CAS) is discounted as to location.

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

Source FNA vol. 5, p. 250. FNA vol. 5, p. 364.
Parent taxa Polygonaceae > subfam. Eriogonoideae > Eriogonum > subg. Eucycla Polygonaceae > subfam. Eriogonoideae > Eriogonum > subg. Oligogonum
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. 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. 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
Synonyms E. dudleyanum, E. kearneyi, E. kearneyi var. monoense, E. kearneyi subsp. monoense, E. nodosum var. kearneyi, E. nodosum subsp. monoense E. sphaerocephalum var. sericoleucum
Name authority M. E. Jones: Contr. W. Bot. 11: 13. (1903) Nuttall: J. Acad. Nat. Sci. Philadelphia 7: 50, plate 8, fig. 2. (1834)
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