sulphur-flower buckwheat (Eriogonum umbellatum Torr.)

Munz's buckwheat (Eriogonum umbellatum var. munzii Reveal)

sulphur-flower buckwheat (Eriogonum umbellatum var. majus Hooker)

sulphur-flower buckwheat (Eriogonum umbellatum var. dichrocephalum Gand.)

sulphur-flower buckwheat (Eriogonum umbellatum var. nevadense Gand.)

Eriogonum umbellatum var. dumosum (Greene) Reveal

sulphur-flower buckwheat (Eriogonum umbellatum var. subaridum S. Stokes)

sulphur-flower buckwheat (Eriogonum umbellatum var. versicolor S. Stokes)

sulphur-flower buckwheat (Eriogonum umbellatum var. chlorothamnus Reveal)

sulphur-flower buckwheat (Eriogonum umbellatum var. vernum Reveal)

Eriogonum umbellatum var. deserticum J. L. Reveal

alpine sulphur-flower buckwheat (Eriogonum umbellatum var. minus I M. Johnst.)

sulphur-flower buckwheat (Eriogonum umbellatum var. devestivum Reveal)

sulphur-flower buckwheat (Eriogonum umbellatum var. ellipticum (Nutt.) J. L. Reveal)

Eriogonum umbellatum var. ramulosum Reveal

sulphur-flower buckwheat (Eriogonum umbellatum var. aureum (Gand.) Reveal)

Eriogonum umbellatum var. stragulum Reveal

Eriogonum umbellatum var. sandbergii Reveal

Eriogonum umbellatum var. mohavense Reveal

Eriogonum umbellatum var. lautum Reveal

Eriogonum umbellatum var. furcosum J. L. Reveal

Eriogonum umbellatum var. nelsoniorum Reveal

sulphur-flower buckwheat (Eriogonum umbellatum var. hypoleium (Piper) C. L. Hitchcock)

Eriogonum umbellatum var. canifolium Reveal

Eriogonum umbellatum var. ahartii Reveal

Eriogonum umbellatum var. goodmanii J. L. Reveal

Eriogonum umbellatum var. humistratum J. L. Reveal

Eriogonum umbellatum var. argus J. L. Reveal

Eriogonum umbellatum var. juniporinum J. L. Reveal

sulphur-flower buckwheat (Eriogonum umbellatum var. covillei (Small) Munz & Reveal)

sulphur-flower buckwheat (Eriogonum umbellatum var. cognatum (Greene) Reveal)

sulphur-flower buckwheat (Eriogonum umbellatum var. polyanthum (Benth.) M. E. Jones)

Eriogonum umbellatum var. haussknechtii (Dammer) M. E. Jones

sulphur-flower buckwheat (Eriogonum umbellatum var. cladophorum Gand.)

sulphur-flower buckwheat (Eriogonum umbellatum var. modocense (Greene) S. Stokes)

green buckwheat (Eriogonum umbellatum var. glaberrimum (Gand.) Reveal)

sulphur-flower buckwheat (Eriogonum umbellatum var. speciosum (Drew) S. Stokes)

sulphur-flower buckwheat (Eriogonum umbellatum var. bahiiforme (Torrey & A. Gray) Jeps.)

sulphur-flower buckwheat (Eriogonum umbellatum var. porteri (Small) S. Stokes)

Eriogonum umbellatum var. smallianum (A. Heller) S. Stokes

Donner Pass buckwheat (Eriogonum umbellatum var. torreyanum (A. Gray) M. E. Jones)

sulphur-flower buckwheat (Eriogonum umbellatum umbellatum)

sulphur-flower buckwheat (Eriogonum umbellatum umbellatum)

Eriogonum umbellatum var. hausknechtii

Eriogonum umbellatum var. umbellatum

Eriogonum umbellatum var. chlorothamnus

Eriogonum umbellatum var. humistratum

Eriogonum umbellatum var. argus

Eriogonum umbellatum var. clichrocephalm