Eriogonum nortonii


Pittonia 2: 165. 1891.

Common names: Pinnacles wild buckwheat
EndemicConservation concern
Synonyms: Eriogonum vimineum subsp. nortonii (Greene) S. Stokes
Treatment appears in FNA Volume 5. Treatment on page 420. Mentioned on page 414, 421.

Herbs, spreading, 0.5–2 dm, glabrous, usually reddish. Stems: aerial flowering stems prostrate to ascending or weakly erect, 0.1–0.3 dm, glabrous. Leaves basal and cauline; basal: petiole 1–3 cm, tomentose, blade round to reniform, 0.5–1.5 × 0.5–1.5 cm, densely white-tomentose abaxially, subglabrous or glabrous and green adaxially; cauline: petiole and blade similar to basal leaves. Inflorescences cymose, not distally uniparous due to suppression of secondary branches, open, 4–18 × 10–30 cm; branches glabrous; bracts 1–2 × 1–2 mm. Peduncles absent. Involucres terminal at tips of slender branchlets proximally, not appressed to branches, broadly turbinate, 3–4 × 2.5–3.5 mm, glabrous; teeth 6–8, erect, 0.4–0.8 mm. Flowers 1–2 mm; perianth white to rose, glabrous; tepals monomorphic, obovate; stamens included, 1–1.5 mm; filaments glabrous. Achenes light brown, 3-gonous, 1–1.3 mm.

Phenology: Flowering May–Aug.
Habitat: Sandy to gravelly slopes, mixed grassland and chaparral communities, oak and pine woodlands
Elevation: 300-1200 m


Of conservation concern.

Eriogonum nortonii is a rare and localized species restricted to the Gabilan Range of Monterey and San Benito counties, from Fremont Peak south to The Pinnacles. It is confined largely to two protected areas, the Hastings Natural History State Reservation and the Pinnacles National Monument. A disjunct population is found southeast of Carmel Highlands in the Santa Lucia Mountains of Monterey County.

Selected References


Lower Taxa

... more about "Eriogonum nortonii"
James L. Reveal +
Greene +
Eriogonum sect. Oregonium +
Pinnacles wild buckwheat +
300-1200 m +
Sandy to gravelly slopes, mixed grassland and chaparral communities, oak and pine woodlands +
Flowering May–Aug. +
Endemic +  and Conservation concern +
Eriogonum vimineum subsp. nortonii +
Eriogonum nortonii +
Eriogonum subg. Oregonium +
species +