Eurybia macrophylla, commonly known as the bigleaf aster, large-leaved aster, largeleaf aster or bigleaf wood aster, is an herbaceous perennial in the family Asteraceae that was formerly treated in the genus Aster. It is native to eastern North America, with a range extending from eastern and central Canada through the northeastern deciduous and mixed forests of New England and the Great Lakes region and south along the Appalachians as far as the northeastern corner of Georgia, and west as far as Minnesota, Missouri and Arkansas. The flowers appear in the late summer to early fall and show ray florets that are usually either a deep lavender or violet, but sometimes white, and disc florets that are cream-coloured or light yellow, becoming purple as they mature. It is one of the parent species of the hybrid Eurybia × herveyi.
Eurybia avita, commonly called Alexander's rock aster, is a rare North American plant species, a herbaceous perennial in the family Asteraceae that was formerly considered part of the genus Aster. It is native to the southeastern United States. It is of conservation concern as it is found in less than 50 sites, typically only in sandy soils near granite flatrocks, and it is most likely already extirpated in North Carolina. Its habitat is threatened by development and the recreational use of the area where it grows. It is very similar to both E. surculosa and E. paludosa and more research needs to be done to determine the exact relationship between the three species.
Eurybia surculosa, commonly known as the creeping aster, is an herbaceous perennial in the family Asteraceae that was previously treated in the genus Aster. It is native to the eastern United States where it is found in sandy soils along the coastal plain, though when E. compacta is also present, it exists farther inland in the southern Appalachian Mountains and the Cumberland Plateau. Although the species is not seriously threatened, it is locally endangered in Virginia and Alabama. The flowers, which have bluish violet ray florets and pale yellow disc florets that eventually turn purplish, emerge in summer and persist into the fall.
Eurybia spinulosa, commonly called the Apalachicola aster or pinewoods aster, is a perennial herb in the family Asteraceae. It is native to the south eastern United States, where it is present only in the Florida panhandle. Due to its restricted habitat, which is confined to the Apalachicola river drainage, as well as to ongoing development in these areas, the species is of serious conservation concern. It has been listed as critically imperiled by the Nature Conservancy and endangered by the state of Florida.
Eurybia spectabilis, commonly known as the eastern showy aster, simply showy aster or purple wood aster, is an herbaceous perennial native to the eastern United States. It is present along the coastal plain of the U.S. where it is most often found growing in dry, sandy soils. Although it is not considered threatened due to its extensive range, it is locally endangered in many states. The flowers appear in the fall and show ray florets that are a violet-purple and yellow disc florets. It is one of the parent species of the hybrid Eurybia × herveyi.
Eurybia compacta, commonly known as the slender aster, is an herbaceous perennial native to the eastern United States from New Jersey to Georgia. It is commonly found along the coastal plain in dry sandy soils, especially in pinelands. While it is not considered to be in high danger of extinction, it is of conservation concern and has most likely been extirpated from much of its original range. The slender aster was for a long time considered to be a variety of E. surculosa, but Guy Nesom's recent research within the genus has shown that it is distinct enough to be treated as a species. It has also been shown to be related to E. avita and E. paludosa.
Eurybia hemispherica, commonly known as the southern prairie aster, is an herbaceous plant in the composite family (Asteraceae). It is native to the south-central United States, primarily the lower Mississippi Valley and southeastern Great Plains, from Kansas south to Texas and east to Kentucky, Tennessee, and the Florida Panhandle. Its natural habitat is typically in upland prairies or dry savannas. It is less commonly found in open moist areas, in sandy-loamy soil.
Eurybia conspicua, commonly known as the western showy aster, is a North American species of plants in the family Asteraceae. It is native to western Canada and the western United States.
Eurybia radulina, commonly known as the roughleaf aster, is an herbaceous perennial in the family Asteraceae. It is native to western North America, where it is present primarily west of the Cascade Range in both Canada and the United States. Its habitats include dry rock outcrops, slopes, edges of forests, and oak woodlands.
Eurybia integrifolia, commonly called the thickstem aster, is an herbaceous perennial in the family Asteraceae. It is native to the western United States where it grows primarily in the Rocky Mountains, the Great Basin, and the Sierra Nevada in Washington, Idaho, Montana, Wyoming, Utah, Oregon, Nevada, and California.
Eurybia mirabilis, commonly known as the bouquet aster or dwarf aster, is an herbaceous perennial in the family Asteraceae. It is endemic to the lower Piedmont of North Carolina and South Carolina in the southeastern United States. Within this small range it is found only infrequently, making it of conservation concern. The species is now largely confined to inaccessible bluffs due to the conversion of other habitats to farmland. It typically grows in deciduous or mixed deciduous woods, as well as on slopes or alluvial plains. Basic to neutral soils are usually preferred. Its flower heads emerge in the late summer to early fall and show white to lavender rays with pale yellow centres sometimes tinged with purple.
Eurybia merita, commonly known as the subalpine aster or arctic aster, is an herbaceous perennial native to northwestern North America, primarily from the Interior Mountains and Plateau system and Rocky Mountains in Canada, stretching south to Utah and extreme northern California. It is found largely in drier, open areas, generally at subalpine levels in mountains, though in more northern areas it is more common at lower elevations. It is similar in appearance to Eurybia sibirica, but their ranges only overlap near the border between the US and Canada, where E. sibirica is generally found at higher elevations than its relative. The flowers emerge in the late summer and display purple to violet ray florets and pale or creamy yellow disc florets.
Eurybia jonesiae, commonly known as Jones's aster or Almut's wood aster, is a North American species of herbaceous perennial native to the Southeastern United States, primarily in the state of Georgia with a few populations in eastern Alabama. It is found mostly in the Piedmont Region in rich oak-hickory-pine forest. Within these rich woods, it has an affinity for moist soils with habitats that include ravines, rocky ridges, and wooded slopes in the vicinity of rivers and streams. Due to its restricted range it is considered threatened by the Nature Conservancy. It has often been misidentified as Eurybia spectabilis and was declared a separate species quite recently in 1988. The flowers emerge in the late summer and persist into the fall bearing cream-coloured ray florets that become purple and yellow disc florets.
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.
Canadanthus is a North American monotypic genus of flowering plants in the family Asteraceae. The only species is Canadanthus modestus, commonly known as great northern aster or western bog aster. It is native to most of Canada and to northern parts of the United States.
Symphyotrichum patens, commonly known as late purple aster or spreading aster, is a perennial, herbaceous plant found in the eastern United States.
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 pygmaeum is a species of flowering plant in the family Asteraceae. Commonly known as pygmy aster, it is a perennial, herbaceous plant that may reach heights of 1.5 to 15 centimeters. Its summer-blooming flowers have purple to violet ray florets and yellow 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 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.
