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An Oligocene (34 – 23 Mya) pollen is known for Asteraceae and Goodeniaceae, and seeds from Oligocene and Miocene (23 – 5.3 Mya) are known for Menyanthaceae and Campanulaceae respectively. [5] According to molecular clock calculations, the lineage that led to Asterales split from other plants about 112 million years ago [ 6 ] or 94 million ...
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.
Aster amellus is the type species of the genus and the family Asteraceae. [1] The name Aster comes from the Ancient Greek word ἀστήρ (astḗr), meaning 'star', referring to the shape of the flower head. Many species and a variety of hybrids and varieties are popular as garden plants because of their attractive and colourful flowers.
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.
Thelesperma filifolium, commonly known as stiff greenthread, [2] or plains greenthread, [3] is a species of flowering plant in the aster family, Asteraceae. It is often found growing in shallow soils. It prefers disturbed sites in dry, sandy or gravelly soil with a neutral to basic pH.
Symphyotrichum racemosum (formerly Aster racemosus) is a species of flowering plant native to parts of the United States and introduced in Canada. [3] It is known as smooth white oldfield aster and small white aster. [4] It is a perennial, herbaceous plant in the family Asteraceae. It is a late-summer and fall blooming flower. [3]
Symphyotrichum oolentangiense (formerly Aster oolentangiensis and Aster azureus), commonly known as skyblue aster [4] and azure aster, [3] is a species of flowering plant in the family Asteraceae native to eastern North America.
Cheirolophus crassifolius flower head. Cheirolophus crassifolius, the Maltese centaury, Maltese rock-centaury or Widnet il-Baħar, is a species of flowering plant in the family Asteraceae. It is endemic to Malta, where it has been the national plant of Malta since 1973. Its natural habitats are cliffs and coastal valleys. It is threatened by ...