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wing buckwheat, wing wild buckwheat

Esmeralda buckwheat, Esmeralda wild buckwheat

Habit Herbs, monocarpic, 5–20(–25) dm, strigose or glabrous; taproot often chambered. Herbs, erect to spreading, annual, (0.5–)1–5(–10) dm, glabrous or glandular proximally, mostly grayish.
Stems

caudex absent;

aerial flowering stems usually 1, not fistulose, 2–13 dm, strigose or glabrous.

caudex absent;

aerial flowering stems erect, solid, not fistulose, 0.5–1(–3) dm, glabrous or sparsely glandular proximally.

Leaves

basal and sometimes cauline;

basal petiolate, petiole 2–6 cm, stigose to woolly or glabrous, blade linear-lanceolate or lanceolate to oblanceolate to spatulate, (3–)5–20 × 0.3–2 cm, strigose, becoming glabrous and green on both surfaces except for margins and midvein;

cauline sessile, blade linear-oblanceolate to lanceolate, 1–9 × 0.3–0.8(–1) cm, similar to basal blade.

basal;

petiole 0.5–4 cm, strigose to hispid;

blade obovate to round-ovate, 0.5–2.5 × 0.4–2 cm, sparsely strigose to pilose-hispid, often slightly glandular, grayish, greenish, or reddish on both surfaces, or reddish adaxially, margins plane.

Inflorescences

2–10 dm;

branches strigose or glabrous;

bracts semileaflike proximally, linear to linear-lanceolate, 2–9 × 1–3 mm, scalelike distally, triangular, 0.8–5 × 0.5–2 mm.

cymose, open to diffuse, 5–40(–70) × 5–50 cm;

branches not fistulose, glabrous or sparsely glandular near proximal nodes;

bracts 3, scalelike, 0.5–3 × 0.5–2 mm.

Peduncles

erect, straight or curving upward, 0.5–3.5 cm, strigose or glabrous.

spreading to reflexed, straight, slender to filiform, 0.2–1.5 cm, glabrous.

Involucres

turbinate to campanulate, 2–4(–4.5) × 2–4(–4.5) mm, strigose or glabrous;

teeth 1–1.8 mm.

narrowly turbinate, 0.8–1.8 × 0.5–1.2 mm, glabrous;

teeth 4–5, erect, 0.2–0.4 mm.

Flowers

1.5–2.5 mm in anthesis, 3–6 mm in fruit;

perianth yellow to yellowish green, rarely maroon in anthesis, often reddish or maroon in fruit, glabrous;

tepals lanceolate;

stamens 1.5–3 mm;

filaments glabrous.

1–3 mm;

perianth white to pinkish with greenish or reddish midribs, glabrous, minutely pustulose proximally;

tepals monomorphic, oblanceolate to oblong;

stamens included, 1–1.5(–1.8) mm;

filaments glabrous.

Achenes

yellowish green to reddish brown, 5–9 mm, glabrous, 3-winged entire length, beakless.

light brown, 3-gonous, 1.4–2.5 mm, glabrous.

Eriogonum alatum

Eriogonum esmeraldense

Distribution
from FNA
AZ; CO; KS; NE; NM; OK; TX; UT; WY; including Mexico
[WildflowerSearch map]
[BONAP county map]
from FNA
CA; NV; UT
[WildflowerSearch map]
[BONAP county map]
Discussion

Varieties 2 (2 in the flora).

The mature reddish roots of Eriogonum alatum can be distinctively chambered. The Navajo (Diné) people consider the species to be a “life medicine” (L. C. Wyman and S. K. Harris 1951), using a mixture of shredded roots and water primarily to treat internal ailments. The species is used also as a ceremonial medicine (P. A. Vestal 1952). The Zuni use it as an emetic for stomachaches (S. Camazine and R. A. Bye 1980).

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

Varieties 2 (2 in the flora).

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

Key
1. Flowering stems and inflorescence branches usually strigose; peduncles strigose or nearly so; involucres strigose, rarely glabrous; plants 5-13(-17) dm; n Arizona, Colorado, w Kansas, sw Nebraska, New Mexico, w Texas, e Utah, se Wyoming
var. alatum
1. Flowering stems and inflorescence branches glabrous or nearly so; peduncles glabrous, occasionally slightly strigose; involucres glabrous; plants 10-20(-25) dm; ne New Mexico, w Oklahoma, n Texas
var. glabriusculum
1. Flowering stems and inflorescence branches glabrous
var. esmeraldense
1. Flowering stems and inflorescence branches glandular to sparsely glandular proximally
var. toiyabense
Source FNA vol. 5, p. 379. FNA vol. 5, p. 392.
Parent taxa Polygonaceae > subfam. Eriogonoideae > Eriogonum > subg. Pterogonum Polygonaceae > subfam. Eriogonoideae > Eriogonum > subg. Ganysma
Sibling taxa
E. abertianum, E. acaule, 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. 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. eremicum, E. ericifolium, 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. alatum var. alatum, E. alatum var. glabriusculum
E. esmeraldense var. esmeraldense, E. esmeraldense var. toiyabense
Synonyms Pterogonum alatum
Name authority Torrey: in L. Sitgreaves, Rep. Exped. Zuni Colorado Rivers, 168, plate 8. (1853) S. Watson: Proc. Amer. Acad. Arts 24: 85. (1889)
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