Symphyotrichum chilense is a species of flowering plant in the family Asteraceae known by the common names Pacific aster and common California aster. It is native to the west coast of North America from British Columbia to Southern California and the Channel Islands. It grows in many habitats, especially along the coast and in the coastal mountain ranges. Despite its scientific name, it does not occur in Chile. Pacific aster blooms from June to October with violet ray florets surrounding yellow disk florets.
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 ascendens is a species of flowering plant in the family Asteraceae known by the common names western aster, long-leaved aster, and Rocky Mountain aster. Blooming July–September, it is native to western North America and can be found at elevations of 500–3,200 m (1,600–10,500 ft) in several habitats.
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 eatonii is a species of aster known by the common name Eaton's aster. It is native to much of western North America from British Columbia to Saskatchewan, the Sierra Nevada in California, the Rocky Mountains region, to Arizona and New Mexico, where it grows in many habitats, especially wet areas such as meadows and near ditches. It is also known by the scientific name Symphyotrichum bracteolatum.
Symphyotrichum frondosum is a species of flowering plant in the family Asteraceae native to western North America. Commonly known as short-rayed alkali aster, it is an annual or perennial herbaceous plant that may reach 140 centimeters tall.
Symphyotrichum greatae is a species of flowering plant in the family Asteraceae endemic to California and known by the common name Greata's aster.
Symphyotrichum lentum is a species of flowering plant in the family Asteraceae with the common name of Suisun Marsh aster. It is a perennial and herbaceous plant endemic to the marshes of Sacramento-San Joaquin River Delta of Northern California.
Symphyotrichum oblongifolium, commonly known as aromatic aster or oblong-leaved aster, is a species of flowering plant in the family Asteraceae and is native to parts of the eastern and central United States. It is an uncommon herbaceous perennial that reaches heights of 10–80 centimeters and blooms August–November with many flower heads in various shades of purple.
Symphyotrichum georgianum is a rare species of flowering plant in the Asteraceae, the aster family. Its common name is Georgia aster. It is native to the southeastern United States where it is known from Alabama, Florida, Georgia, North Carolina, and South Carolina. As of 2013, it may be extirpated from the state of Florida.
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 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 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 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 jessicae is a species of flowering plant in the family Asteraceae endemic to Idaho and Washington states in the United States. Commonly known as Jessica's aster, it is a perennial, herbaceous plant that may reach 40 to 150 centimeters tall. Its flowers have violet ray florets and yellow disk florets. It is of conservation concern and known only from the Palouse River and Clearwater River drainages of eastern Washington and northwestern Idaho.
Symphyotrichum porteri is a species of flowering plant in the family Asteraceae endemic to the foothills of the Rocky Mountains in the U.S. states of Wyoming, Colorado, and New Mexico. Commonly known as Porter's aster, it is a perennial, herbaceous plant that may reach 10 to 50 centimeters tall. Its flowers have white, rarely pinkish, ray florets and yellow, becoming pink then brown, disk florets. S. porteri grows at elevations of 1,800–2,900 meters. Its limited range makes it a NatureServe Vulnerable (G3) species, and it is classified Critically Imperiled (S1) in Wyoming.
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 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 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.
