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| Kingdom | Plantae
– plantes, Planta, Vegetal, plants |
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| Subkingdom | Viridiplantae
– green plants |
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| Infrakingdom | Streptophyta
– land plants |
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| Superdivision | Embryophyta
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| Division | Tracheophyta
– vascular plants, tracheophytes |
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| Subdivision | Spermatophytina
– spermatophytes, seed plants, phanérogames |
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| Class | Magnoliopsida
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| Superorder | Caryophyllanae
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| Order | Caryophyllales
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| Family | Polygonaceae
– knotweed, renouées, buckwheat |
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| Genus | Eriogonum Michx.
– ériogones, wild buckwheat, buckwheat |
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| Species | Eriogonum ovalifolium Nutt. – ovalleaf eriogonum, cushion wild buckwheat, cushion buckwheat |
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Direct Children: |
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| Variety | Eriogonum ovalifolium var. caelestinum Reveal
– cushion buckwheat | |
| Variety | Eriogonum ovalifolium var. depressum Blank.
– cushion buckwheat | |
| Variety | Eriogonum ovalifolium var. eximium (Tidestr.) J.T. Howell
– brownmargin buckwheat, cushion buckwheat | |
| Variety | Eriogonum ovalifolium var. monarchense D.A. York
– Monarch buckwheat | |
| Variety | Eriogonum ovalifolium var. nivale (Canby ex Coville) M.E. Jones
– cushion buckwheat | |
| Variety | Eriogonum ovalifolium var. ochroleucum (Small ex Rydb.) M. Peck
– cushion buckwheat | |
| Variety | Eriogonum ovalifolium var. ovalifolium Nutt.
– cushion buckwheat, cushion wild buckwheat | |
| Variety | Eriogonum ovalifolium var. pansum Reveal
– cushion buckwheat | |
| Variety | Eriogonum ovalifolium var. purpureum (Nutt.) Durand
– cushion buckwheat | |
| Variety | Eriogonum ovalifolium var. vineum (Small) Jeps.
– Cushenbury buckwheat | |
| Variety | Eriogonum ovalifolium var. williamsiae Reveal
– Williams' buckwheat, steamboat buckwheat | |
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