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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 ).
Maize (Zea mays, Poaceae) is the most widely cultivated C 4 plant.[1]In botany, C 4 carbon fixation is one of three known methods of photosynthesis used by plants. C 4 plants increase their photosynthetic efficiency by reducing or suppressing photorespiration, which mainly occurs under low atmospheric CO 2 concentration, high light, high temperature, drought, and salinity.
Symphyotrichum undulatum (formerly Aster undulatus) is a species of flowering plant in the family Asteraceae native to eastern North America. Its common name is wavyleaf aster, [3] and it is a perennial, herbaceous plant that flowers August through October and may reach heights between 30 and 160 centimeters (1 and 5 feet).
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.
On the outside of the flower heads of all members of the family Asteraceae are small specialized leaves called "phyllaries", and together they form the involucre that protects the individual flowers in the head before they open. [a] [7] The involucres of S. falcatum are campanulate (bell-shaped) and usually 5–8 mm (1 ⁄ 4 – 3 ⁄ 8 in) long.
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 ...
The Cichorioideae are a subfamily of the family Asteraceae of flowering plants. Familiar members of Cichorioideae include lettuce, dandelions, chicory and Gazania species. The subfamily comprises about 240 genera and about 2900 species. It is heterogeneous and hard to characterize except with molecular characters.