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Asteraceae (/ ˌ æ s t ə ˈ r eɪ s i. iː,-ˌ aɪ /) is a large family of flowering plants that consists of over 32,000 known species in over 1,900 genera within the order Asterales. The number of species in Asteraceae is rivaled only by the Orchidaceae , and which is the larger family is unclear as the quantity of extant species in each ...
The aster phyllaries (left) are short, curl away from the plant, and are in several layers. The daisy phyllaries (right) are long, hairy, and clasp the base of the flower head. These Silphium pinnatifidum phyllaries are graduated, with those closer to the flower longer than the outer layers.
Aster is a genus of flowering plants in the family Asteraceae. As of August 2024 Plants of the World Online accepts 186 species. [1] For species formerly placed in genus Aster, see List of Aster synonyms.
These are called phyllaries, and together they form the involucre that protects the individual flowers in the head before they open. [a] [7] The involucres of Symphyotrichum dumosum are cylinder-bell in shape and usually 4.5–6.3 mm (1 ⁄ 5 – 1 ⁄ 4 in) [b] long. [5] The phyllaries are appressed or slightly spreading. The shape of the ...
These bracts are glabrous, and they grade into the phyllaries. [ 3 ] At the base of the head and surrounding the unopened flowers of all members of the family Asteraceae is a bundle of sepal -like bracts or scales called phyllaries , which together form the involucre that protects the individual flowers in the head before they open.
Astereae is a tribe of plants in the family Asteraceae that includes annuals, biennials, perennials, subshrubs, shrubs, and trees. They are found primarily in temperate regions of the world. [ 2 ] Plants within the tribe are present nearly worldwide divided into over 250 genera and more than 3,100 species, making it the second-largest tribe in ...
These are called phyllaries, and together they form the involucre that protects the individual flowers in the head before they open. [b] [17] The involucres of Symphyotrichum lateriflorum are cylinder-bell in shape and usually 4–6 mm (0.16–0.24 in) in length. [4] The phyllaries are appressed or slightly spreading. The shape of the outer ...
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.