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A ray flower is a two- or three-lobed, strap-shaped, individual flower, found in the head of most members of the Asteraceae. [ 15 ] [ 16 ] The corolla of the ray flower may have two tiny, vestigial teeth, opposite to the three-lobed strap, or tongue, indicating its evolution by fusion from an ancestral, five-part corolla.
This is true for all members of the Asteraceae family. [23] After pollination, they mature in 3–4 weeks [ 15 ] and become gray or tan with an oblong-obovoid shape, 1.3–2.2 mm (0.051–0.087 in) in length with 3–5 nerves , and with a few stiff, slender bristles on their surfaces ( strigillose ).
Twelve species of Asteraceae As of August 2024 [update] , Plants of the World Online listed 1,706 accepted genera in the family Asteraceae . Those genera are listed with their author citations .
Asteroideae is a subfamily of the plant family Asteraceae. It contains about 70% of the species of the family. [2] It consists of several tribes, including Astereae, Calenduleae, Eupatorieae, Gnaphalieae, Heliantheae, Senecioneae and Tageteae. Asteroideae contains plants found all over the world, many of which are shrubby.
Symphyotrichum ontarionis (formerly Aster ontarionis) is a species of flowering plant in the family Asteraceae native to eastern North America.Commonly known as Ontario aster and bottomland aster, it is a perennial, herbaceous plant that may reach heights of 120 centimeters (4 feet).
Asterales (/ ˌ æ s t ə ˈ r eɪ l iː z / ASS-tər-RAY-leez) [2] is an order of dicotyledonous flowering plants that includes the large family Asteraceae (or Compositae) known for composite flowers made of florets, and ten families related to the Asteraceae. [3]
This is true for all members of the Asteraceae family. [8] After pollination, they mature and become gray or tan with an obovoid shape (like an egg), 1–1.8 mm long with 4–5 faint nerves, and sparsely strigillose (with a few stiff, slender bristles) or sericeous (silky-looking) on their surface.
Symphyotrichum dumosum (formerly Aster dumosus) is a species of flowering plant of the family Asteraceae commonly known as rice button aster [3] and bushy aster. [4] It is native to much of eastern and central North America, as well as Haiti and Dominican Republic. [4] It is a perennial, herbaceous plant that may reach a height of 1 meter (3 ...