Symphyotrichum sericeum is a species of flowering plant in the family Asteraceae native to central North America. Commonly known as western silver aster, western silvery aster, and silky aster, it is a perennial, herbaceous plant that may reach 70 centimeters tall. Its flowers have purple ray florets and pink then purple disk florets, and its leaves are firm and silvery-green.
Symphyotrichum defoliatum is a species of flowering plant in the family Asteraceae known by the common name San Bernardino aster. It is endemic to Southern California where it grows in grasslands and meadows, and it is of conservation concern.
Symphyotrichum depauperatum, commonly known as serpentine aster or starved aster, is a rare species in the family Asteraceae adapted to serpentine barrens, an ecosystem with a high concentration of toxic metals in the soil. It has been found in Pennsylvania, Maryland, and on some diabase glades in North Carolina. It grows to 50 centimeters and has white ray florets surrounding a center of yellow disk florets.
Symphyotrichum prenanthoides is a species of flowering plant in the family Asteraceae known by the common name crookedstem aster. It is native to northcentral and northeastern North America.
Symphyotrichum dumosum is a species of flowering plant of the family Asteraceae commonly known as rice button aster and bushy aster. It is native to much of eastern and central North America, as well as Haiti and Dominican Republic. It is a perennial, herbaceous plant that may reach a height of 1 meter.
Symphyotrichum patens, commonly known as late purple aster or spreading aster, is a perennial, herbaceous plant found in the eastern United States.
Symphyotrichum boreale is a species of flowering plant of the aster family (Asteraceae) native to North America. Commonly known as rush aster, northern bog aster, and slender white aster, it is a perennial, herbaceous plant that may reach heights of 85 centimetres.
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 perennial, herbaceous plant in the family Asteraceae. It is a late-summer and fall blooming flower.
Symphyotrichum rhiannon is a species of flowering plant endemic to a serpentine barren in western North Carolina. It has been given the vernacular Rhiannon's aster and is also known as Buck Creek aster. It is a perennial, herbaceous plant in the family Asteraceae.
Symphyotrichum simmondsii is a species of flowering plant of the family Asteraceae endemic to the southeastern United States. Commonly known as Simmonds' aster, it is a colony-forming herbaceous perennial.
Symphyotrichum molle is a species of flowering plant in the aster family (Asteraceae) endemic to the Bighorn Mountains of Montana and Wyoming in the United States. Commonly known as soft aster, it is a perennial, herbaceous plant that ranges from 30 to 60 centimeters in height.
Symphyotrichum yukonense is a species of flowering plant in the family Asteraceae endemic to disjunct areas in Alaska and the Canadian territories of Yukon and Northwest Territories. Commonly known as Yukon aster, it is a perennial, herbaceous plant 5 to 30 centimeters in height. Its flowers have purple to blue ray florets and yellow to brown disk florets. S. yukonense grows at elevations of 300–1,500 meters in mud flats and on sandy or silty lake shores. It is a NatureServe Vulnerable (G3) species and is classified Imperiled (S2) in its Canadian range.
Symphyotrichum anomalum is a species of flowering plant in the family Asteraceae native to Arkansas, Illinois, Kansas, Missouri, and Oklahoma. Commonly known as manyray aster, it is a perennial, herbaceous plant that may reach 20 to 120 centimeters tall. Its flowers have lavender or blue to purple, seldom white, ray florets and cream or light yellow, then pinkish-purple disk florets. Its flowers are attractive to butterflies. The lower leaves have untoothed margins and are heart-shaped at the base.
Symphyotrichum nahanniense is a species of flowering plant in the family Asteraceae endemic to Northwest Territories, Canada.
Symphyotrichum graminifolium is a species of flowering plant in the family Asteraceae native to the South American countries of Argentina, Bolivia, Brazil, Paraguay, and Uruguay. It is a perennial, herbaceous plant that grows to 1.5 meters tall. Its numerous flowers are in broad corymbiform arrays with lilac or bluish ray florets.
Symphyotrichum patagonicum is a species of flowering plant in the family Asteraceae endemic to the Argentinian provinces of Chubut, Mendoza, Neuquén, and Santa Cruz. It is an annual, herbaceous plant that grows 3 to 30 centimeters tall. Its flowers have short white ray florets in 3 or 4 series and numerous disk florets.
Symphyotrichum peteroanum is a species of flowering plant in the family Asteraceae endemic to Argentina and Chile. It is a perennial, herbaceous plant that grows 20 to 60 centimeters tall. Its flowers have white ray florets in one series that are 6–8 millimeters long. It grows in tall forests with trees that exceed 15 meters at elevations of 1,000–2,200 meters in humid montane ecosystems.
Symphyotrichum vahlii is a species of flowering plant in the family Asteraceae native to South America, specifically Bolivia, Chile, Argentina, and the Falkland Islands. It is herbaceous and grows 10 to 60 centimeters tall. Its flowers have white ray florets of length 6 millimeters. It grows in wetland areas of tall forests with trees that exceed 15 meters. One infraspecies is accepted, Symphyotrichum vahlii var. tenuifolium, in addition to the autonym S. vahlii var. vahlii.
Symphyotrichum regnellii is a species of herbaceous flowering plants in the family Asteraceae native to Argentina and Brazil. It grows to heights of 60 to 120 centimetres, and its flowers have white to pink ray florets that have lengths up to 3 millimetres. It grows in swamps and wet savannas.
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