Phyllary
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In botanical terminology, a phyllary, also known an involucral bract or tegule, is a single bract of the involucre of a composite flower. The involucre is the grouping of bracts together. Phyllaries a
Balsamorhiza hookeri phyllaries are widely separated, hairy, stiff, and point away from the stem.
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.
Symphyotrichum racemosum
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Symphyotrichum racemosum is a species of flowering plant native to parts of the United States and introduced in Canada. It is known as smooth white oldfield aster and small white aster. It is a perenn
Symphyotrichum racemosum 52633899
Symphyotrichum racemosum distribution
Symphyotrichum racemosum Harvard University Herbaria specimen
Large Symphyotrichum racemosum inflorescence