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Wooton's buckwheat, Wooton's wild buckwheat

acorn buckwheat, glandular buckwheat, glandular wild buckwheat

Habit Herbs, erect, 4–5 × 3–5 dm, tomentose to floccose. Herbs, spreading, annual, (0.5–) 1–2.5 dm, glandular, greenish or reddish green.
Stems

caudex absent;

aerial flowering stems erect, stout, solid, not fistulose, arising directly from a taproot, 1–2.5 dm, tomentose to floccose.

caudex absent;

aerial flowering stems erect, solid, not fistulose, 0.3–0.7 dm, glandular.

Leaves

basal, not in rosettes;

petiole 2–5 cm, tomentose to floccose;

blade elliptic, (2.5–)3–6.5 × 1.5–3 cm, densely whitish- to tannish-tomentose abaxially, thinly tomentose to floccose and greenish adaxially, margins entire, plane.

basal, often sheathing up stem 1–2 cm;

petiole 0.3–2 cm, glandular;

blade broadly elliptic to oval, 0.5–1.5 × 0.5–1.5 cm, pilose-hirsutulous, slightly glandular and greenish on both surfaces, margins entire.

Inflorescences

compound-umbellate, 5–15 × 5–20 cm;

branches tomentose to floccose;

bracts 3–6, leaflike at proximal node, 2–4(–5) × 0.7–1.8 cm, often scalelike distally.

cymose, diffuse, spreading and usually flat-topped, 5–20 × 5–30 cm;

branches not fistulose, glandular;

bracts 3, scalelike, 0.8–1.2 × 0.5–1 mm.

Peduncles

deflexed or nearly so, straight, slender, 0.2–0.5 cm at proximal nodes, 0.01–0.1 cm distally, sparsely glandular nearly entire length.

Involucres

1 per node, campanulate, 3–6 × 3–7 mm, thinly floccose;

teeth 5–7, erect, 0.3–0.6 mm.

narrowly turbinate, 0.8–1.2(–1.5) × 0.6–1(–1.3) mm, glabrous;

teeth 5, erect, 0.3–0.5 mm.

Flowers

4–7(–9) mm, including 1–1.5 mm stipelike base;

perianth bright yellow, densely pubescent abaxially;

tepals dimorphic, those of outer whorl lanceolate to elliptic, 3–6 × 1.5–2.5, those of inner whorl elliptic, 5–9 × 2–3.5 mm;

stamens exserted, 3–5 mm;

filaments pilose proximally.

1–1.8 mm;

perianth white to pinkish with dark reddish brown to red midribs, densely pilose;

tepals monomorphic, narrowly lanceolate;

stamens exserted, 1–1.5 mm;

filaments glabrous.

Achenes

light brown to brown, 4–8 mm, glabrous except for sparsely pubescent beak.

black, 3-gonous, 1–1.3 mm, glabrous.

Eriogonum wootonii

Eriogonum glandulosum

Phenology Flowering Jul–Sep. Flowering May–Nov.
Habitat Sandy to gravelly slopes, sagebrush communities, montane conifer woodlands Sandy to gravelly, often calcareous slopes, saltbush and creosote bush communities
Elevation 2000-2800 m (6600-9200 ft) 900-1600 m (3000-5200 ft)
Distribution
from FNA
NM
[WildflowerSearch map]
[BONAP county map]
from FNA
CA; NV
[BONAP county map]
Discussion

Eriogonum wootonii is known only from the San Francisco Mountains of Lincoln and Otero counties in southern New Mexico. It is related to, but significantly disjunct from, E. arcuatum, and is part of a three-species complex that includes E. correllii of northern Texas and E. allenii of Virginia and West Virginia, and that skips across the central United States, the result of fragmentation associated with the southward push of Pleistocene glaciation.

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

Of conservation concern.

Eriogonum glandulosum is a localized species that varies from rare to common in southeastern Inyo and extreme northeastern San Bernardino counties, California, and in southern Nye, northern Clark, and southwestern Lincoln counties, Nevada. The name E. glandulosum may not be the earliest for the taxon. The type of E. cordatum Torrey & Frémont (1845, as “cordalum”) was collected by Frémont most likely near the California-Nevada border, where E. trichopes, E. contiguum, and E. glandulosum occur. Because the description is not decisive, and because J. Torrey and A. Gray (1870) reported the type as missing, it is impossible to place the name unequivocally. Nonetheless, E. cordatum was reported to be glandular (“glaneous”) with the leaves “pubescent above, hairy underneath.” The glandular condition probably eliminates E. trichopes, while those leaf features probably exclude E. contiguum.

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

Source FNA vol. 5, p. 370. FNA vol. 5, p. 389.
Parent taxa Polygonaceae > subfam. Eriogonoideae > Eriogonum > subg. Oligogonum Polygonaceae > subfam. Eriogonoideae > Eriogonum > subg. Ganysma
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. 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. 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. 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. jamesii var. wootonii Oxytheca glandulosa, E. carneum, E. glandulosum var. carneum, E. trichopes subsp. glandulosum
Name authority (Reveal) Reveal: Harvard Pap. Bot. 9: 206. (2003) (Nuttall) Nuttall ex Bentham: in A. P. de Candolle and A. L. P. P. de Candolle, Prodr. 14: 21. (1856)
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