Symphyotrichum puniceum, is a species of flowering plant in the family Asteraceae native to eastern North America. It is commonly known as purplestem aster, red-stalk aster, red-stemmed aster, red-stem aster, and swamp aster. It also has been called early purple aster, cocash, swanweed, and meadow scabish.
Symphyotrichum laeve is a flowering plant native to Canada, the United States, and Coahuila (Mexico). It has the common names of smooth blue aster, smooth aster, smooth-leaved aster, glaucous Michaelmas-daisy and glaucous aster.
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 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 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 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 fontinale is a species of flowering plant in the family Asteraceae endemic to Florida and a small area of southwest Georgia. It has the common names of Florida water aster and Florida water American-aster. S. fontinale is a perennial, herbaceous plant that may reach 30–90 centimeters in height.
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 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 pratense is a species of flowering plant in the family Asteraceae native to the southeastern United States. Commonly known as barrens silky aster, it is a perennial, herbaceous plant that may reach 40 to 60 centimeters tall. Its flowers have rose-purple ray florets and pink then purple disk florets.
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 hendersonii is a species of flowering plant in the family Asteraceae native to the northwestern United States. Commonly known as Henderson's aster, it is a perennial, herbaceous plant that may reach 70 to 150 centimeters tall. Its flowers have purple ray florets and yellow disk florets.
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 walteri is a species of flowering plant in the family Asteraceae native to the southeastern United States. Commonly known as Walter's aster, it is a perennial, herbaceous plant that may reach 20 to 100 centimeters tall. Its flowers have bluish-purple ray florets and yellow 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.
