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Matted wild buckwheat, tall buckwheat, tall wild buckwheat

crescent buckwheat, pinyon mesa buckwheat, scale-bract wild buckwheat

Habit Herbs, erect to spreading, perennial, 1–6 dm, glabrous, often glaucous, grayish. Herbs, erect, (1–)1.5–3 × 1–2 dm, tomentose, grayish.
Stems

caudex compact to spreading;

aerial flowering stems erect, solid, not fistulose, 0.4–4 dm, glabrous, often glaucous.

slightly spreading to erect, without persistent leaf bases, up to 1/5 height of plant;

caudex stems absent;

aerial flowering stems erect, slender, solid, not fistulose, 0.5–1(–1.3) dm, tomentose.

Leaves

basal or sheathing up stem 3–8 cm;

petiole 0.4–4 cm, tomentose;

blade elliptic to deltoid or ovate to suborbiculate or orbiculate, 0.3–3 × 0.2–3 cm, densely white-tomentose and grayish on both surfaces, margins plane.

basal, 1 per node;

petiole 1–2 cm, tomentose;

blade round, (0.3–)0.5–1.5 × (0.3–)1–1.5 cm, tomentose abaxially, thinly floccose and green adaxially, or white-tomentose on both surfaces, margins plane.

Inflorescences

cymose, open, erect to spreading, 5–40 × 5–40 cm;

branches glabrous;

bracts 3, scalelike, 1–3 × 0.5–2 mm.

cymose with involucres racemosely disposed at tips, 10–15(–20) × 0.6–3(–5) cm;

branches dichotomous, tomentose;

bracts 3, scalelike, linear to narrowly triangular, and 1–3 mm, or leaflike, ovate to orbiculate, and 5–12 × 5–12 mm.

Peduncles

erect or spreading, straight, slender, 0.6–6 cm, glabrous.

absent.

Involucres

turbinate to turbinate-campanulate, 2–4 × 1.5–3(–4) mm, glabrous but tomentose adaxially;

teeth 5, erect or nearly so, 0.5–1 mm.

1 per node, campanulate, 2–3(–4) × 2–4 mm, tomentose;

teeth 5, erect, 0.4–0.8 mm.

Flowers

1.5–3.5 mm;

perianth white to pink with greenish to reddish midribs, becoming pinkish or orange-brown to red, glabrous;

tepals dimorphic, those of outer whorl ovate to obovate or cordate to suborbiculate, those of inner whorl narrowly oblong to oblong;

stamens included, 1–1.5 mm;

filaments sparsely pilose proximally.

3–4 mm, perianth white to whitish brown, glabrous;

tepals connate proximal 1/4, monomorphic, oblanceolate;

stamens exserted, 3–6 mm;

filaments pilose proximally.

Achenes

light brown to brown, 3-gonous, 2–3 mm, glabrous.

light brown, 2.5–3 mm, glabrous.

Eriogonum tenellum

Eriogonum mensicola

Phenology Flowering Jul–Oct.
Habitat Rocky to gravelly flats and slopes, sagebrush and mountain mahogany communities, pinyon-juniper and montane conifer woodlands
Elevation 1800-2700 m (5900-8900 ft)
Distribution
from FNA
CO; NM; OK; TX; including Mexico
[WildflowerSearch map]
[BONAP county map]
from FNA
CA; NV
[BONAP county map]
Discussion

Varieties 3 (3 in the flora).

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

Eriogonum mensicola is infrequent in the Inyo Mountains and the Panamint and Coso ranges of Inyo County, California, with a disjunct population on the Sheep Range in Clark County, Nevada.

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

Key
1. Leaves basal; caudex stem blades 0.3-1.5 × 0.3-1 cm; compact; se Colorado, e New Mexico, w Oklahoma, n and w Texas
var. tenellum
1. Leaves sheathing up stems; caudex stem blades 0.3-3 × 0.2-3 cm; compact to spreading; Texas
→ 2
2. Leaf blades elliptic to deltoid, 0.3-1.2 × 0.2-0.7 cm; caudex stems spreading; c Texas
var. ramosissimum
2. Leaf blades ovate to suborbiculate or orbiculate, 1-3 × 1-3 cm; caudex stems compact to slightly spreading; sw Texas
var. platyphyllum
Source FNA vol. 5, p. 400. FNA vol. 5, p. 295.
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. spergulinum, E. sphaerocephalum, E. strictum, E. subreniforme, E. suffruticosum, E. temblorense, 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. 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. tenellum var. platyphyllum, E. tenellum var. ramosissimum, E. tenellum var. tenellum
Synonyms E. panamintense var. mensicola
Name authority Torrey: Ann. Lyceum Nat. Hist. New York 2: 241. (1827) S. Stokes: Leafl. W. Bot. 3: 16. (1941)
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