Symphyotrichum ericoides, known as white heath aster, frost aster, or heath aster, is a species of flowering plant in the family Asteraceae native to much of central and eastern North America. It has been introduced to parts of Europe and western Asia.
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 pilosum 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. There are two varieties: Symphyotrichumpilosum var.pilosum, known by the common names previously listed, and Symphyotrichumpilosum var.pringlei, known as Pringle's aster. Both varieties are conservationally secure globally and in most provinces and states where they are native.
Symphyotrichum falcatum is a species of flowering plant in the family Asteraceae. Commonly called white prairie aster and western heath aster, it is native to a widespread area of central and western North America.
Symphyotrichum robynsianum is a species of flowering plant in the family Asteraceae native to northeastern North America. Common names include Robyns's aster, longleaf aster, and long-leaved aster.
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 ciliatum is a species of flowering plant in the family Asteraceae native to North America and eastern Eurasia. Commonly known as rayless annual aster and rayless alkali aster, it is an annual, herbaceous plant that may reach over 70 centimeters in height. Each flower head has many whitish then pink disk florets and no ray florets ("rayless").
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 turbinellum, with the common names of prairie aster, smooth violet prairie aster, and mauve-flowered starwort, is a species of perennial flowering plant in the family Asteraceae native to the United States in Arkansas, Illinois, Iowa, Kansas, Louisiana, Missouri, Nebraska, and Oklahoma, primarily in the Ozarks. It has gained the Royal Horticultural Society's Award of Garden Merit. It flowers from August to October.
Symphyotrichum plumosum is a species of flowering plant in the family Asteraceae endemic to Florida in the United States. Commonly known as plumose aster, it is a perennial, herbaceous plant that may reach 40 to 100 centimeters tall. Its flowers have rose-purple ray florets and yellow turning to purple disk florets. It is of conservation concern.
Symphyotrichum anticostense is a species of flowering plant in the family Asteraceae endemic to Quebec, New Brunswick, and Maine. Commonly known as Anticosti aster, it is a perennial, herbaceous plant that may reach 10 to 90 centimeters in height. Its flowers have pale purple or lilac, sometimes white, ray florets and yellow, then reddish purple, disk florets.
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 foliaceum is a species of flowering plant in the family Asteraceae native to western North America. Its common names are leafy aster, leafy-bracted aster, and alpine leafybract aster, and it is a perennial, herbaceous plant that may reach heights from 10 to 60 centimeters. Its flowers have violet to purple ray florets and yellow disk florets.
Symphyotrichum retroflexum is a species of flowering plant in the family Asteraceae native to the southeastern United States. Commonly known as rigid whitetop aster, it is a perennial, herbaceous plant that may reach 40 to 100 centimeters tall. Its flowers have blue to purple ray florets and cream to pale yellow then pinkish disk florets. It is known only from the Blue Ridge Mountains in Alabama, Georgia, North Carolina, South Carolina, Tennessee, and Virginia, where it grows in wooded areas at elevations of 400–1,500 meters. As of September 2021, NatureServe classified it as Apparently Secure (G4); it had been reviewed last in 1994 and is marked as "needs review". There is an introduced presence of S. retroflexum in southeast China.
Symphyotrichum elliottii is a species of flowering plant in the family Asteraceae native to the southeastern United States Atlantic coastal plain where it grows in wetland areas. Commonly known as Elliott's aster, it is a perennial, herbaceous plant that may reach 6 to 20 decimeters tall. Its flowers have pink ray florets and pale yellow, then pink, then brown disk florets. NatureServe, as of July 2021, classified S. elliottii as Apparently Secure (G4) globally, and of conservation concern in North Carolina, South Carolina, and Virginia.
Symphyotrichum undulatum is a species of flowering plant in the family Asteraceae native to eastern North America. Commonly known as wavyleaf aster, it is a perennial, herbaceous plant that flowers August through October and may reach heights between 30 and 160 centimeters.
Symphyotrichum spathulatum is a species of flowering plant in the family Asteraceae native to western North America including northwestern Mexico. Commonly known as western mountain aster, it is a perennial, herbaceous plant that may reach 20 to 80 centimeters tall. Its flowers, which open in July and August, have violet ray florets and yellow disk florets.
Symphyotrichum parviceps is a species of flowering plant in the family Asteraceae. It is native to the central United States, and it has the common names of smallhead aster and small white aster. A usually short-lived herbaceous, perennial plant, it may reach 30 to 100 centimeters in height. Its flowers have white ray florets and pale yellow then purplish disk florets.
Symphyotrichum chapmanii is a species of flowering plant in the family Asteraceae native to the Apalachicola River drainage basin of Alabama and Florida. Commonly known as savanna aster, it is a perennial, herbaceous plant that may reach 30 to 80 centimeters tall. Its flowers have purple to blue-lavender ray florets and pale yellow disk florets. It is a wetland species and is of conservation concern. It may be extirpated in Alabama.
