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ashyleaf wild buckwheat, coastal buckwheat, coastal wild buckwheat

Cache Valley buckwheat, Cache Valley wild buckwheat

Habit Shrubs, round, 6–15 × 10–20(–25) dm, tomentulose, grayish. Herbs, cespitose or spreading, scapose, (0.5–)1.5–3 × (0.5–)2–4(–5) dm, tomentose, reddish, greenish, or grayish.
Stems

spreading, occasionally with persistent leaf bases, up to 3/4 or more height of plant;

caudex stems absent;

aerial flowering stems erect to spreading, slender, solid, not fistulose, 1–4 dm, tomentulose.

spreading, occasionally with persistent leaf bases, up to 1/4 height of plant;

caudex stems matted;

aerial flowering stems slightly spreading to erect, slender, solid, not fistulose, (0.06–)1–2.5 dm, tomentose.

Leaves

cauline, 1 per node;

petiole 0.1–0.5(–1) cm, tomentulose;

blade ovate, 1.5–3 × 1–2.5(–3) cm, white-tomentulose abaxially, less so and greenish adaxially, margins plane.

sheathing up stem 1–4 cm, 1 per node;

petiole (0.5–)1–2.5(–3) cm, lanate;

blade oblanceolate to elliptic, (0.5–)1–5(–7) × (0.2–)0.3–1 cm, densely lanate abaxially, less so to tomentose adaxially, margins plane.

Inflorescences

capitate, congested, 1–2.5 × 1–2.5 cm;

branches dichotomous, tomentulose;

bracts usually 3, scalelike, triangular, and 1–3 mm, or leaflike, ovate, and 7–20 × 5–18 mm.

capitate, 1 cm;

branches absent;

bracts 3, scalelike, triangular, 1.5–3 mm.

Peduncles

absent.

absent.

Involucres

3–10 per cluster, narrowly turbinate, 3–5 × 2–3 mm, tomentulose;

teeth 5, erect, 0.2–0.5 mm.

3–5 per cluster, turbinate, (2–)3.5–4.5 × (1.5–)2.5–3 mm, tomentose;

teeth 5, erect, 0.5–1 mm.

Flowers

2.5–3 mm;

perianth white to pinkish, densely white-villous;

tepals connate proximally, monomorphic, spatulate to narrowly obovate;

stamens exserted, 2.5–3.5 mm;

filaments subglabrous.

(2–)2.5–3.5(–4) mm;

perianth ochroleucous or yellow, glabrous;

tepals connate proximal 1/4, monomorphic, oblong;

stamens exserted, (2.5–)3–5 mm;

filaments glabrous or sparsely pilose proximally.

Achenes

brown, 2–2.5 mm, glabrous.

brown, (2.5–)3–3.5 mm, glabrous.

2n

= 80.

Eriogonum cinereum

Eriogonum loganum

Phenology Flowering year-round. Flowering May–Aug.
Habitat Sandy beaches, coastal bluffs, mesas, canyon slopes, coast scrub and chaparral communities Sandy to gravelly slopes, sagebrush communities, juniper woodlands, gravelly or limestone slopes, high-elevation sagebrush communities, subalpine conifer woodlands
Elevation 0-400 m (0-1300 ft) 1400-3100 m (4600-10200 ft)
Distribution
from FNA
CA
[WildflowerSearch map]
[BONAP county map]
from FNA
UT
Discussion

Of conservation concern.

Eriogonum cinereum occurs naturally along the Pacific Coast in Los Angeles, Santa Barbara, and Ventura counties, and also on Santa Rosa Island. It is infrequently planted along highways (and is now found in San Diego County) and hybridizes with E. fasciculatum var. foliolosum. The species is the food plant of the Bernardino dotted-blue butterfly (Euphilotes bernardino).

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

Of conservation concern.

Eriogonum loganum is known from a few widely scattered, disjunct populations in Cache and Morgan counties. The type locality is on the southern edge of the Utah State University campus, but construction of three parking lots has resulted in its near total destruction. Fragmentary populations remain at the mouth of Logan Canyon, but more robust populations are known from Cart Hollow (south of Logan) and Smithfield Canyon (north of Logan). There is also a series of high-elevation populations found along the backbone of the Bear River Range, with both the Cart Hollow and Smithfield Canyon populations more similar to the material found around Tony Grove Lake than to that on the bench in Logan. The species is clearly related to E. brevicaule, especially to the ochroleucous forms of var. laxifolium found in Rich County, Utah.

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

Source FNA vol. 5, p. 300. FNA vol. 5, p. 268.
Parent taxa Polygonaceae > subfam. Eriogonoideae > Eriogonum > subg. Eucycla 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. 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. 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. 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. brevicaule var. loganum, E. chrysocephalum subsp. loganum
Name authority Bentham: Bot. Voy. Sulphur, 45. (1844) A. Nelson: Bot. Gaz. 54: 149. (1912)
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