Flora of North America species comparison

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Eriogonum ordii

Eriogonum hookeri

Fort Mohave wild buckwheat, Fort Mojave buckwheat

Hooker's buckwheat, Hooker's eriogonum, Hooker's wild buckwheat
Habit Herbs, erect, annual, (0.5–)1–7 dm, glabrous and sparsely floccose, greenish. Herbs, erect, annual, 1–6 dm, glabrous, glaucous, grayish.
Stems

caudex absent;

aerial flowering stems erect, solid, not fistulose, (0.3–) 0.7–3 dm, thinly floccose or glabrous, floccose proximally.

caudex absent;

aerial flowering stems erect, solid, not fistulose, 0.1–0.4 dm, glabrous, glaucous.
Leaves

basal, occasionally cauline;

basal: petiole 2–6(–10) cm, floccose, blade oblong-oblanceolate to obovate, (1.5–)2–8 × (0.8–)1–3 cm, thinly floccose or glabrous and green on both surfaces, margins entire;

cauline: petiole 0.5–3 cm, thinly floccose, blade elliptic to obovate, 0.7–3 × 0.2–2 cm, similar to basal blade.

basal;

petiole 1–5 cm, tomentose;

blade cordate to subreniform, (1–)2–5 × 2–6 cm, densely white felty-tomentose abaxially, tomentose and grayish adaxially, margins occasionally wavy.
Inflorescences

paniculate, open to diffuse, (5–)10–50 × 5–50 cm;

branches not fistulose, glabrous except for floccose nodes and proximal branches;

bracts 3, scalelike, 0.5–3 × 0.3–1 mm.

cymose, open to diffuse, spreading to subglobose or flat-topped to umbrella-shaped, 5–35 × 5–50 cm;

branches glabrous, glaucous;

bracts 3, scalelike, 1–3 × 0.5–1.5 mm.
Peduncles

erect, straight, capillary, 0.5–2 cm, glabrous or thinly floccose.

absent.
Involucres

narrowly turbinate to turbinate, 1–1.5(–1.8) × 0.6–1.2 mm, glabrous;

teeth 4, erect, 0.2–0.5 mm.

Flowers

1–2.5(–3) mm;

perianth white with greenish or reddish midribs to pale yellow with greenish midribs, becoming pink to reddish, densely short-villous;

tepals monomorphic, oblong to narrowly ovate;

stamens exserted, 1–1.5 mm;

filaments glabrous.

1.5–2 mm;

perianth yellow to reddish yellow, glabrous;

tepals dimorphic, those of outer whorl orbiculate, those of inner whorl narrowly ovate;

stamens mostly included, 1.3–1.5 mm;

filaments glabrous.
Achenes

dark brown to black, 3-gonous, 1.8–2 mm, glabrous.

light brown, 3-gonous, 2–2.5 mm, glabrous.
Invo

-lucres deflexed, broadly campanulate to hemispheric, 1–2 × 1.5–3(–3.5) mm, glabrous;

teeth 5, erect, 0.5–0.7 mm.
2n

= 40.

Eriogonum ordii

Eriogonum hookeri
Phenology Flowering Mar–Jul. Flowering Jun–Oct.
Habitat Gravelly to clayey flats and slopes, mixed grassland communities, oak and conifer woodlands Sandy washes, flats, and slopes, saltbush, greasewood, sagebrush, and mountain mahogany communities, pinyon-juniper woodlands
Elevation 200-1400 m (700-4600 ft) 1300-2500(-3000) m (4300-8200(-9800) ft)
Distribution
from FNA
CA
[WildflowerSearch map]
[BONAP county map]
from FNA
AZ; CA; CO; ID; NM; NV; OR; UT; WY
[WildflowerSearch map]
[BONAP county map]
Discussion

Eriogonum ordii is infrequently encountered (rarely locally common) along the inner Coast Ranges from Monterey and San Benito counties south through Fresno, Merced, and San Luis Obispo counties to Ventura County, then eastward across northern Los Angeles County to the hills east of Bakersfield in Kern County. This distribution is based on confirmed modern collections. The type (J. G. Lemmon 4189, ASU, BM, DS, G, GH, ISC, K, P, UC, US) supposedly was collected near Fort Mohave, Mohave County, Arizona, in 1884. Two T. Brandegee specimens reportedly were gathered on the boundary of San Diego and Imperial counties, one at Split Mountain (Apr 1905, UC) and the second along San Felipe Creek (4 Apr 1901, UC). Brandegee’s label data often are dubious, and these disjunct sites are discounted.

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

Eriogonum hookeri is basically a species of the Intermountain Region of Utah and Nevada, just entering portions of east-central California, southeastern Oregon, southeastern Idaho, southwestern Wyoming, western Colorado, northwestern New Mexico, and northern Arizona. Populations of the species usually are scattered, with the plants rarely common and even less frequently locally weedy.

P. A. Vestal (1940) stated that the Hopi boiled Eriogonum hookeri with mush for flavoring.

(Discussion copyrighted by Flora of North America; reprinted with permission.)
Source FNA vol. 5, p. 390. FNA vol. 5, p. 396.
Parent taxa Polygonaceae > subfam. Eriogonoideae > Eriogonum > subg. Ganysma 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. 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. 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. 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. tenuissimum E. deflexum var. gilvum, E. deflexum subsp. hookeri
Name authority S. Watson: Proc. Amer. Acad. Arts 21: 468. (1886) S. Watson: Proc. Amer. Acad. Arts 14: 295. (1879)
Web links 
Unless otherwise noted, all data comes from the online version of the Flora of North America, who have made most of their content available via a Creative Commons license (CC BY 4.0).



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