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 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 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 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 welshii is an imperiled species of flowering plant of the aster family (Asteraceae) endemic to only certain western states in the United States, specifically Arizona, Idaho, Montana, Utah, and Wyoming, and is found at elevations of 1,300–2,300 meters. It is perennial and herbaceous and may reach a height of 1 meter. Its bloom time is August–October, and it grows in wet soils that occur in dry areas.
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 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 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 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 glabrifolium is a species of flowering plant in the family Asteraceae native to Argentina and Chile where it inhabits wet meadows and stream edges. It is a perennial, herbaceous plant that grows 5 to 25 centimeters tall. Its flowers have white or lilac ray florets and yellow disk florets.
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 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.
Symphyotrichum hintonii is a species of perennial, herbaceous, flowering plant in the family Asteraceae native to Guerrero, Mexico. It grows in oak and oak-pine woods at elevations of 1,400–2,200 meters, blooming white ray florets November–January. It reaches heights of about 40–80 centimeters.
Symphyotrichum moranense is a species of flowering plant in the family Asteraceae. It is a perennial and herbaceous plant that reaches about 90 centimeters in height. Its white ray florets open October through April, and it is native to Mexico.
Symphyotrichum bimater is a species of flowering plant in the family Asteraceae that is native to the states of Chiapas and Oaxaca in Mexico, and to Guatemala. It is perennial and herbaceous and grows to heights of 30–46 centimeters. Its white ray florets bloom May–December, and it grows in pine-oak woods, ravines, slopes, and grassy openings at elevations 1,000–2,150 meters.
Symphyotrichum chihuahuense is a species of flowering plant in the family Asteraceae that is native to Chihuahua and Durango, Mexico. It is perennial and herbaceous and reaches heights of 20–35 centimeters. Its white ray florets open June–September, and it grows in grasslands and oak–pine woods at elevations 1,800–2,500 meters.
