Eriogonum cithariforme var. agninum

(Greene) Reveal

Aliso 7: 223. 1970.

Common names: Santa Ynez wild buckwheat
Endemic
Basionym: Eriogonum agninum Greene Pittonia 2: 165. 1891
Synonyms: Eriogonum gracile var. polygonoides (S. Stokes) Munz Eriogonum vimineum var. agninum (Greene) S. Stokes Eriogonum vimineum subsp. polygonoides S. Stokes
Treatment appears in FNA Volume 5. Treatment on page 424. Mentioned on page 425.

Leaves: petiole not winged; basal blade elliptic to ovate or nearly rounded. Flowering stems and inflorescence branches glabrous.


Phenology: Flowering May–Oct.
Habitat: Sandy flats and slopes, chaparral communities, oak and montane conifer woodlands
Elevation: 500-1800(-2100) m

Discussion

Variety agninum is known primarily from the mountains of Santa Barbara and Ventura counties. A single collection (Davidson 1617, NY) found along Big Rock Creek in Los Angeles County in 1900, and the type of subsp. polygonoides, gathered in San Luis Obispo County, are from disjunct populations. This variety is sometimes difficult to differentiate from E. davidsonii.

Selected References

None.

Lower Taxa

None.
James L. Reveal +
(Greene) Reveal +
Eriogonum agninum +
Santa Ynez wild buckwheat +
500-1800(-2100) m +
Sandy flats and slopes, chaparral communities, oak and montane conifer woodlands +
Flowering May–Oct. +
Eriogonum gracile var. polygonoides +, Eriogonum vimineum var. agninum +  and Eriogonum vimineum subsp. polygonoides +
Eriogonum cithariforme var. agninum +
Eriogonum cithariforme +
variety +