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An aster is a cellular structure shaped like a star, consisting of a centrosome and its associated microtubules during the early stages of mitosis in an animal cell. [1]: 221 Asters do not form during mitosis in plants. Astral rays, composed of microtubules, radiate from the centrosphere and look like a cloud. Astral rays are one variant of ...
How to Care for Asters. Asters are easy-to-grow with the right conditions: Light Needs of Asters. Most asters need full sun, which is considered 6 or more hours of direct sunlight per day.
Cosmos bipinnatus, commonly called the garden cosmos, Mexican aster [2] or cosmea, [3] is a medium-sized flowering herbaceous plant in the daisy family Asteraceae, native to the Americas. The species and its varieties and cultivars are popular as ornamental plants in temperate climate gardens.
Aster is a genus of perennial flowering plants in the family Asteraceae.Its circumscription has been narrowed, and it now encompasses around 170 species, all but one of which are restricted to Eurasia; many species formerly in Aster are now in other genera of the tribe Astereae.
Symphyotrichum ericoides (formerly Aster ericoides), with common names white heath aster, [4] frost aster, [5] and heath aster, [6] is a species of flowering plant in the family Asteraceae native to much of central and eastern North America. It has been introduced to parts of Europe and western Asia.
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.
The Asteraceae were first described in the year 1740 and given the original name Compositae. [6] The family is commonly known as the aster, daisy, composite, or sunflower family. Most species of Asteraceae are herbaceous plants, and may be annual, biennial, or perennial, but there are also shrubs, vines, and trees.
Common names include panicled aster, lance-leaved aster, and white panicled aster. It is a perennial , herbaceous plant that may reach 1.5 meters (5 feet) tall or more, sometimes approaching 2 m ( 6 + 1 ⁄ 2 ft).