Helianthus annuus L.
Sunflower, common sunflower
[An article has not been written yet.]
8/27/2014 · Sandy Walk, Petroglyph National Monument, New Mexico · ≈ 4 × 5″ (10 × 13 cm) 
ID is uncertain 
8/29/2014 · New Mexico · By Susan M. Kent · ≈ 11 × 7″ (27 × 18 cm) 
8/29/2014 · New Mexico · By Susan M. Kent 
8/29/2014 · New Mexico · By Susan M. Kent 
8/27/2014 · Sandy Walk, Petroglyph National Monument, New Mexico · ≈ 8 × 6″ (20 × 16 cm) ID is uncertain 
9/21/2008 · Camden, Maine · ≈ 15 × 10″ (38 × 25 cm) ID is uncertain 
| Kingdom | Plantae | Plants, but not fungi, lichens, or algae (from Stearn's Botanical Latin) |
| 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 | annuus | “Annual,” a plant that lives for a single season |
Helianthus annuus description by Thomas H. Kent, not updated.
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