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Helianthus (/ ˌ h iː l i ˈ æ n θ ə s /) is a genus comprising about 70 species of annual and perennial flowering plants in the daisy family Asteraceae commonly known as sunflowers. Except for three South American species, the species of Helianthus are native to North America and Central America.
- Helianthus Navarri
Helianthus navarri is a species of sunflower in the family...
- Sunflower (Disambiguation)
Sunflower is the common sunflower (Helianthus annuus), a...
- Common sunflower
The common sunflower (Helianthus annuus) is a species of...
- Helianthus debilis
Helianthus debilis is a species of sunflower known by the...
- Helianthus strumosus
Helianthus strumosus, the pale-leaf woodland sunflower, is a...
- Helianthus Navarri
Description. There are 150 species of sunflower, most of which are native to North America. They are annuals or perennials in the Asteraceae (daisy) family and have rough sandpapery leaves and showy daisy-like flowers that come in a variety of colors.
The common sunflower (Helianthus annuus) is a living annual plant in the family Asteraceae, with a large flower head (capitulum). The stem of the flower can grow up to 3 metres tall, with a flower head that can be 15 cm wide. Other types of sunflowers include the California Royal Sunflower, which has a burgundy (red + purple) flower head.
55 (54) Perennials (taproots parsniplike); anthers and appendages usually dull orange or orange-brown, sometimes yellowish. 48 Helianthus cusickii (in part) +. Perennials (rhizomatous or with crown buds or slightly thickened taproots); anthers dark brown or black, appendages dark brown or black, or yellow.
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