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Jaynes Canyon buckwheat, Jaynes Canyon wild buckwheat

Brandegee's buckwheat, Brandegee's wild buckwheat

Habit Herbs, matted, dioecious, (0.5–)1–2 × 3–8 dm, sparsely tomentose. Herbs, spreading, sometimes scapose, 1–2.5 × (0.5–)1–2 dm, tomentose to floccose, grayish.
Stems

caudex spreading;

aerial flowering stems erect, slender, solid, not fistulose, arising at nodes of caudex branches and at distal nodes of short, nonflowering aerial branches, (0.5–)1–2 dm, sparsely tomentose.

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

caudex stems matted, floccose or glabrous;

aerial flowering stems erect, slender, solid, not fistulose, 1–2.5 dm, tomentose to floccose.

Leaves

in loose basal rosettes;

petiole 0.7–3 cm, lanate to tomentose;

blade elliptic to ovate, (0.5–)1–2 × 0.5–1.5 cm, densely grayish-lanate on both surfaces, margins entire, plane.

strictly basal, 1 per node;

petiole 1–3(–3.5) cm, lanate;

blade oblanceolate to elliptic, 1.5–4(–5) × 0.4–1.2(–1.6) cm, densely white-tomentose adaxially, less so and greenish adaxially, margins plane.

Inflorescences

staminate plants capitate, rarely umbellate, 1–2 × 1–2 cm; pistillate plants capitate, rarely umbellate, 1–4 × 1–4 cm;

branches tomentose to floccose;

bracts 4–6, semileaflike to leaflike, 3–5 × 1–3 mm.

capitate or umbellate-cymose, 0.1–1.5 cm wide, tomentose to floccose;

branches dichotomous, sometimes absent, tomentose to floccose;

bracts 3, scalelike, triangular, and 2–5 mm, or leaflike, lanceolate, and 1–3 × 0.2–0.7 cm.

Peduncles

absent.

Involucres

1 per node or 2–3 per cluster, turbinate to turbinate-campanulate, tomentose; staminate plants 2.5–3 × 3–4 mm, teeth 5–6, erect, 1.5–2 mm; pistillate plants 3–4 × 3–4 mm, teeth 4–5, erect, 2.5–3.5 mm.

4–8 per cluster, turbinate, 3.5–5 × 3–4 mm, floccose or glabrous;

teeth 5, erect, 0.4–0.8 mm.

Flowers

perianth yellow to brownish yellow, glabrous; staminate flowers 2–3 mm, including 0.5–0.7 mm stipelike base; pistillate flowers (3.5–)5–8 mm, including 0.5–0.8 mm stipelike base;

tepals monomorphic, oblanceolate to obovate;

stamens exserted, 1–2 mm;

filaments pilose proximally.

(2.5–)3–3.5 mm;

perianth ochroleucous, glabrous;

tepals connate proximal 1/4, monomorphic, oblanceolate to oblong;

stamens exserted, 3–3.5 mm;

filaments pilose basally.

Achenes

light brown to brown, 3–4 mm, glabrous except for sparsely pubescent beak.

light brown, 3–3.5 mm, glabrous.

Eriogonum diclinum

Eriogonum brandegeei

Phenology Flowering Jun–Sep. Flowering Jul–Oct.
Habitat Gravelly serpentine flats and slopes, sagebrush communities, montane conifer woodlands Clay slopes and washes, sagebrush communities, juniper woodlands
Elevation 1800-2400 m (5900-7900 ft) 1800-2600 m (5900-8500 ft)
Distribution
from FNA
CA; OR
[WildflowerSearch map]
[BONAP county map]
from FNA
CO
[BONAP county map]
Discussion

Eriogonum diclinum is found infrequently in the Siskiyou and Trinity mountains of northwest California (Siskiyou and Trinity counties) and southwest Oregon (Jackson and Josephine counties). The species approaches E. incanum in aspect, and reports of that species in Oregon were based on staminate specimens of E. diclinum.

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

Of conservation concern.

Eriogonum brandegeei is a rare and localized species known from nine occurrences along the Arkansas River in Chaffee and Fremont counties. It is regarded as a “sensitive” species in Colorado, by both the state and the U.S. Forest Service. The Droney Gulch Natural Area has been established, in part, to protect the species. Brandegee’s wild buckwheat is related to E. brevicaule var. laxifolium, but well isolated from that taxon. An undated E. L. Greene specimen (ISC) supposedly was gathered in northern New Mexico, but that is most unlikely. A G. W. Letterman collection (MO) purportedly from Colorado Springs certainly is mislabeled.

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

Source FNA vol. 5, p. 367. FNA vol. 5, p. 269.
Parent taxa Polygonaceae > subfam. Eriogonoideae > Eriogonum > subg. Oligogonum 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. 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. 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
Synonyms E. spathulatum var. brandegeei
Name authority Reveal: Aliso 7: 218. (1970) Rydberg: Fl. Rocky Mts., 220, 1061. (1917)
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