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Matted wild buckwheat, tall buckwheat, tall wild buckwheat

Paiute buckwheat, Piute buckwheat

Habit Herbs, erect to spreading, perennial, 1–6 dm, glabrous, often glaucous, grayish. Herbs, matted, occasionally scapose, 0.2–1 × 0.8–1.5(–2) dm, glandular-puberulent and slightly pilose, greenish.
Stems

caudex compact to spreading;

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

matted, with persistent leaf bases, up to 1/5 height of plant;

caudex stems matted;

aerial flowering stems rarely scapelike, erect to prostrate, slender, solid, not fistulose, 0.15–0.6(–0.8) dm, thinly to densely glandular-puberulent and slightly pilose.

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, fasciculate in terminal tufts;

petiole 0.2–0.6(–1) cm, tomentose;

blade broadly elliptic, 0.2–0.8(–1) × 0.2–0.4(–0.6) cm, densely white-tomentose abaxially, less so and olive green adaxially, 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-umbellate or cymose, 0.5–3 × 1–2.5 cm, rarely capitate, 1–1.3 cm;

branches dichotomous, occasionally absent, pilose and glandular;

bracts 3, scalelike, triangular, 1–1.2 mm.

Peduncles

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

erect to spreading, slender, 0.05–0.5(–1) cm, glandular or nearly glabrous, rarely 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, rarely 2-4, turbinate-campanulate, (2.5–)3.5–4 × 3.5–4 mm, rigid, glandular-puberulent or nearly glabrous;

teeth 7–9, erect or slightly spreading, 1–1.5 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.

2.5–3.5(–4) mm;

perianth whitish to reddish, finely glandular-hairy abaxially;

tepals connate proximally, slightly dimorphic, those of outer whorl obovate and obtuse, 1.5–2.3 mm wide, apex truncate or emarginate, those of inner whorl cuneate or spatulate, 0.7–1.3 mm wide, apex rounded;

stamens exserted, 3–5.5 mm;

filaments sparsely pubescent proximally.

Achenes

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

light brown, 2.5–3 mm, apex sparsely glandular.

Eriogonum tenellum

Eriogonum breedlovei

Distribution
from FNA
CO; NM; OK; TX; including Mexico
[WildflowerSearch map]
[BONAP county map]
from FNA
CA
[BONAP county map]
Discussion

Varieties 3 (3 in the flora).

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

Varieties 2 (2 in the flora).

Eriogonum breedlovei is geographically isolated from the rest of the E. ochrocephalum complex, and the only member nearby is E. rosense, found at higher elevations of the Sierra Nevada. Both varieties of E. breedlovei are rare.

(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
1. Scapes erect; inflorescences cymose-umbellate, rarely capitate
var. breedlovei
1. Scapes suberect to prostrate; inflorescences cymose
var. shevockii
Source FNA vol. 5, p. 400. FNA vol. 5, p. 280.
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. 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. tenellum var. platyphyllum, E. tenellum var. ramosissimum, E. tenellum var. tenellum
E. breedlovei var. breedlovei, E. breedlovei var. shevockii
Synonyms E. ochrocephalum var. breedlovei
Name authority Torrey: Ann. Lyceum Nat. Hist. New York 2: 241. (1827) (J. T. Howell) Reveal: Leafl. W. Bot. 10: 335. (1966)
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