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ocherflower wild buckwheat, white woolly buckwheat, whitewoolly wild buckwheat

ternate buckwheat, ternate wild buckwheat

Habit Herbs, matted, scapose, 0.5–4.5(–5) × 0.5–3 dm, glabrous or glandular, grayish. Herbs, spreading, matted, synoecious, 1–2.5(–3) × 3–13 dm, tomentose.
Stems

matted or spreading, occasionally with persistent leaf bases, up to 1/5 height of plant;

caudex stems matted or absent;

aerial flowering stems scapelike, erect, slender, solid, not fistulose, (0.5–)1.5–4.5(–5) dm, glabrous, rarely slightly floccose, or glandular below inflorescence.

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, 1–2.5(–3) dm, tomentose.

Leaves

basal, fasciculate in terminal tufts, sometimes 1 per node and sheathing up stem 1–4 cm;

petiole 1–4(–5) cm, tomentose;

blade oblanceolate or lanceolate to elliptic, oblong, or ovate to obovate, (0.6–)1–3.5(–4) × (0.3–)0.5–1.5 cm, densely tomentose abaxially, only slightly less so adaxially, margins plane.

in loose basal rosettes;

petiole 0.5–1 cm, tomentose;

blade oblong to obovate, (0.7–)1–1.5 × (0.4–)0.8–1.3 cm, usually densely brown-tomentose abaxially, tomentose to thinly tomentose, floccose or glabrate adaxially, margins entire, plane.

Inflorescences

capitate, 1.5–2.5 cm;

branches absent;

bracts 3, scalelike, narrowly triangular, 1–2.5 mm.

umbellate, rarely with an additional bracteate branch and 1 peduncle with 1 involucre, 0.8–3 × 1–3.5 cm;

branches thinly tomentose;

bracts 4–6(–8) at first node, lanceolate, 0.5–1.5 × 0.2–0.9 cm, scalelike distally, 1–3 × 0.5–1.5 mm.

Peduncles

absent or erect, slender, 0.1–0.5(–0.6) cm, glabrous.

Involucres

5–8 per cluster, turbinate to campanulate, 3.5–5.5(–6) × (1.5–)2–4.5(–5) mm, rigid, floccose at least on teeth, occasionally glandular, rarely glabrous;

teeth 6–8, erect, 0.5–1 mm.

1 per node, turbinate, 5–8 × 3–5 mm, tomentose;

teeth 5–8, erect, 0.8–2 mm.

Flowers

1.5–3 mm;

perianth yellow, glabrous or weakly glandular abaxially;

tepals connate proximally, monomorphic, broadly oblong;

stamens exserted, 2.5–3.5(–4) mm;

filaments pilose proximally.

3–5 mm, including 0.3–0.6 mm stipelike base;

perianth sulphur yellow, glabrous;

tepals monomorphic, spatulate to obovate;

stamens exserted, 3–4 mm;

filaments pilose proximally, infrequently glabrous.

Achenes

light brown, (1.5–)2–3 mm, glabrous.

light brown, 3.5–5 mm, glabrous except for sparsely pubescent beak.

Eriogonum ochrocephalum

Eriogonum ternatum

Phenology Flowering Jun–Aug.
Habitat Sandy to gravelly often serpentine slopes and outcrops, manzanita and sagebrush communities, oak and montane conifer woodlands
Elevation 400-1700(-2200) m (1300-5600(-7200) ft)
Distribution
from FNA
CA; ID; NV; OR
[WildflowerSearch map]
[BONAP county map]
from FNA
CA; OR
[WildflowerSearch map]
[BONAP county map]
Discussion

Varieties 2 (2 in the flora).

Variety ochrocephalum is occasionally seen in rock gardens, and var. calcareum is worthy of cultivation.

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

Eriogonum ternatum is infrequently encountered in the Coast Ranges of southwestern Oregon (Curry and Josephine counties) and adjacent northwestern California (Del Norte and western Siskiyou counties). A collection from “Dodkin’s Lake” in the Mt. Eddy area of Siskiyou County (Bracelin 455, IND) remains to be confirmed, as this is well to the east of other populations. Some workers have confused this species with E. umbellatum (especially var. humistratum). No doubt the poor representation of this species in herbaria is due at least in part to collectors having assumed that it is some variant of the much more common E. umbellatum.

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

Key
1. Scapes glandular at least proximal to inflorescence; ne California, nw Nevada
var. ochrocephalum
1. Scapes glabrous or, rarely, slightly floccose; sw Idaho, se Oregon, wc Nevada
var. calcareum
Source FNA vol. 5, p. 283. FNA vol. 5, p. 356.
Parent taxa Polygonaceae > subfam. Eriogonoideae > Eriogonum > subg. Eucycla Polygonaceae > subfam. Eriogonoideae > Eriogonum > subg. Oligogonum
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. 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. 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. 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. ochrocephalum var. calcareum, E. ochrocephalum var. ochrocephalum
Synonyms E. umbellatum var. ternatum, E. ursinum var. confine
Name authority S. Watson: in W. H. Brewer et al., Bot. California 2: 480. (1880) Howell: Fl. N.W. Amer., 570. (1902)
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