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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 ).
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.
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.
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.
Symphyotrichum novae-angliae (formerly Aster novae-angliae) is a species of flowering plant in the aster family native to central and eastern North America. Commonly known as New England aster, [4] hairy Michaelmas-daisy, [5] or Michaelmas daisy, [6] it is a perennial, herbaceous plant usually between 30 and 120 centimeters (1 and 4 feet) tall and 60 to 90 cm (2 to 3 ft) wide.
Symphyotrichum pilosum (formerly Aster pilosus) is a perennial, herbaceous, flowering plant in the Asteraceae family native to central and eastern North America. It is commonly called hairy white oldfield aster, frost aster, white heath aster, heath aster, hairy aster, common old field aster, old field aster, awl aster, nailrod, and steelweed.
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 ...