The family Asteraceae, with the original name Compositae, consists of over 32,000 known species of flowering plants in over 1,900 genera within the order Asterales. Commonly referred to as the aster, daisy, composite, or sunflower family, Compositae were first described in the year 1740. 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 family is unknown.
Pyrethrum was a genus of several Old World plants now classified as Chrysanthemum or Tanacetum which are cultivated as ornamentals for their showy flower heads. Pyrethrum continues to be used as a common name for plants formerly included in the genus Pyrethrum. Pyrethrum is also the name of a natural insecticide made from the dried flower heads of Chrysanthemum cinerariifolium and Chrysanthemum coccineum. The insecticidal compounds present in these species are pyrethrins.
Chrysanthemums, sometimes called mums or chrysanths, are flowering plants of the genus Chrysanthemum in the family Asteraceae. They are native to East Asia and northeastern Europe. Most species originate from East Asia and the center of diversity is in China. Countless horticultural varieties and cultivars exist.
Tansy is a perennial, herbaceous flowering plant in the genus Tanacetum in the aster family, native to temperate Europe and Asia. It has been introduced to other parts of the world, including North America, and in some areas has become invasive. It is also known as common tansy, bitter buttons, cow bitter, or golden buttons. The Latin word vulgare means "common".
Gerbera L. is a genus of plants in the Asteraceae (Compositae) family. The first scientific description of a Gerbera was made by J. D. Hooker in Curtis's Botanical Magazine in 1889 when he described Gerbera jamesonii, a South African species also known as Transvaal daisy or Barberton daisy. Gerbera is also commonly known as the African daisy.
Tanacetum parthenium, known as feverfew, is a flowering plant in the daisy family, Asteraceae. It may be grown as an ornament, and may be identified by its synonyms, Chrysanthemum parthenium and Pyrethrum parthenium.
Argyranthemum is a genus of flowering plants belonging to the family Asteraceae. Members of this genus are sometimes also placed in the genus Chrysanthemum.
Parthenolide is a sesquiterpene lactone of the germacranolide class which occurs naturally in the plant feverfew, after which it is named, and in the closely related tansy. It is found in highest concentration in the flowers and fruit. Parthenolide's molecular structure depiction is often incorrect regarding the stereochemistry of the epoxide, although X-ray single crystal structures are available.
Tripleurospermum is a genus in the chamomile tribe within the sunflower family. Mayweed is a common name for plants in this genus.
Parthenium is a genus of North American annuals, biennials, perennials, subshrubs, and shrubs in the tribe Heliantheae within the family Asteraceae and subfamily Asteroideae.
Curio ficoides, syn. Senecio ficoides, also known as skyscraper Senecio and Mount Everest Senecio, is a species of succulent plant, in the genus Curio (Asteraceae), indigenous to South Africa.
Omalotheca sylvatica, synonyms including Gnaphalium sylvaticum, is a species of plant in the family Asteraceae. It is commonly known as heath cudweed, wood cudweed, golden motherwort, chafeweed, owl's crown, and woodland arctic cudweed. It is widespread across the temperate Northern Hemisphere, throughout North America and Eurasia. The species was first formally described by Carl Linnaeus in 1753 as Gnaphalium sylvaticum.
Argyranthemum frutescens, known as Paris daisy, marguerite or marguerite daisy, is a perennial plant known for its flowers. It is native to the Canary Islands. Hybrids derived from this species are widely cultivated as ornamental plants in private gardens and public parks in many countries, and have naturalized in Italy and southern California. There are many cultivars, but the most common has white petals.
Tanacetum camphoratum is a species of flowering plant in the aster family known by the common names camphor tansy and dune tansy. It is native to the Pacific Coast of North America from British Columbia to California, where it grows in sand dunes and other coastline habitat. This species may be known by the synonym Tanacetum douglasii and is often included in Tanacetum bipinnatum. It is a rhizomatous perennial herb with a thick, low-lying stem up to 25 centimeters long, branching to form a mass of vegetation. It is hairy, glandular, and aromatic, with a camphor scent. The leaves are up to 25 centimeters long and thick but featherlike, divided into many narrow leaflets on each side of the main rachis. Each leaflet in turn has many segments along each side, and the segments are usually divided into several small, knobby segments with folded or curled edges. The inflorescence bears up to 15 flower heads, each about a centimeter wide or slightly wider. Each head contains many yellowish disc florets and many pistillate florets around the edges. The latter may have minute ray florets. The fruit is an achene a few millimeters long which is tipped with a small pappus of toothed scales.
Tanacetum cinerariifolium is a species of flowering plant in the aster family, Asteraceae, and formerly part of the genus Pyrethrum, but now placed in the genus Chrysanthemum, or the genus Tanacetum by some biologists. It is called the Dalmatian chrysanthemum or Dalmatian pyrethrum, denoting its origin in that region of Europe (Dalmatia). It looks more like the common daisy than other pyrethrums do. Its flowers, typically white with yellow centers, grow from numerous fairly rigid stems. Plants have blue-green leaves and grow to 45 to 100 cm in height.
Cota is a genus belonging to the chamomile tribe within the sunflower family. It is native to Europe, North Africa, and southwestern Asia, with a few species naturalized elsewhere. It is an herbaceous plant with flower heads including white or yellow ray florets and yellow disc florets.
Glebionidinae is a small subtribe of flowering plants in the tribe Anthemideae of the family Asteraceae. Its members include species used in the production of garden marguerites.
Tanacetum corymbosum is a species of flowering plant belonging to the family Asteraceae.
Symphyotrichum trilineatum is a species of flowering plant in the family Asteraceae native from Mexico to Guatemala.
Prestelia is a genus of flowering plants belonging to the family Asteraceae.
