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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 | Asteranae
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| Order | Asterales
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| Family | Asteraceae
– sunflowers, tournesols |
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| Genus | Helianthella Torr. & A. Gray – helianthella |
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Direct Children: |
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| Species | Helianthella californica A. Gray
– California helianthella | |
| Species | Helianthella castanea Greene
– Mt. Diablo helianthella | |
| Species | Helianthella microcephala (A. Gray) A. Gray
– purpledisk helianthella, small-head dwarf-sunflower | |
| Species | Helianthella parryi A. Gray
– Parry's dwarf-sunflower, Parry's dwarfsunflower | |
| Species | Helianthella quinquenervis (Hook.) A. Gray
– fivenerve helianthella, nodding dwarf-sunflower, nodding helianthella | |
| Species | Helianthella uniflora (Nutt.) Torr. & A. Gray
– oneflower helianthella | |
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