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Helianthus maximilianii Schrad. Helianthus maximiliani is a North American species of sunflower known by the common name Maximilian sunflower. [ 2] This sunflower is named for Prince Maximilian of Wied-Neuwied, who encountered it on his travels in North America. Helianthus maximiliani is native to the Great Plains in central North America, and ...
Helianthus parviflorus Bernh. ex Spreng. Helianthus microcephalus is a perennial species of Helianthus also known as small woodland sunflower [1] or small-wood sunflower or small-head sunflower [3] or simply as woodland sunflower. [2] It is a native of Northern America, and is to be found growing in open woodlands and along roadsides.
Helianthus ( / ˌhiːliˈænθəs /) [ 3] is a genus comprising about 70 species of annual and perennial flowering plants in the daisy family Asteraceae commonly known as sunflowers. [ 4][ 5] Except for three South American species, the species of Helianthus are native to North America and Central America.
Helianthus pumilus. Nutt. 1841. Helianthus pumilus is a North American species of sunflower known by the common name little sunflower [1] or bush sunflower. [2] It is found in the western United States, primarily the Rocky Mountain region of Montana, Wyoming, and Colorado, with a few isolated populations in Utah and Idaho. [3]
Helianthus debilis is a species of sunflower known by the common names cucumberleaf sunflower, beach sunflower, weak sunflower, [ 2] and East Coast dune sunflower. [ 3] It is native to the United States, where it can be found along the Atlantic and Gulf Coasts. [ 4] It is known elsewhere as an introduced species, such as South Africa, Australia ...
The plant flowers in summer. What is often called the "flower" of the sunflower is actually a "flower head" ( pseudanthium ), 7.5–12.5 centimetres (3–5 in) wide, [ 4] of numerous small individual five-petaled flowers ("florets"). The outer flowers, which resemble petals, are called ray flowers. Each "petal" consists of a ligule composed of ...
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