Helianthus microcephalus Torr. & A. Gray
Small-headed sunflower
Kingdom | Plantae | Plants, but not fungi, lichens, or algae |
Subkingdom | Tracheobionta | Vascular plants—plants with a “circulatory system” for delivering water and nutrients |
Division | Magnoliophyta | Flowering plants, also known as angiosperms |
Class | Magnoliopsida | Dicotyledons—plants with two initial seed leaves |
Subclass | Asteridae | A large class that encompasses asters |
Order | Asterales | Flowering plants with a central disk flower and surrounding petals, like daisies |
Family | Asteraceae | The aster family, which also includes daisies and sunflowers; from the Greek ἀστήρ, “star,” for the star-shaped flowers |
Genus | Helianthus | From Greek helios, “sun,” and anthos, “flower,” because it was believed that sunflowers turn to follow the sun |
Species | microcephalus | “Small-headed” |
About plant names...
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Helianthus microcephalus description by Thomas H. Kent, last updated 25 May 2020.
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9/14/2010 · Garden in the Woods, Framingham, Massachusetts ≈ 15 × 10" (39 × 26 cm) 

9/14/2010 · Garden in the Woods, Framingham, Massachusetts ≈ 6 × 4" (15 × 10 cm) 
Range:

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