Symphyotrichum undulatum

Secure  (NatureServe)[1]
Scientific classification Edit this classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Asterids
Order: Asterales
Family: Asteraceae
Tribe: Astereae
Subtribe: Symphyotrichinae
Genus: Symphyotrichum
Subgenus: Symphyotrichum subg. Symphyotrichum
Section: Symphyotrichum sect. Symphyotrichum
Species:
S. undulatum
Binomial name
Symphyotrichum undulatum
Symphyotrichum undulatum native distribution map: Canada — Nova Scotia and Ontario; US — Alabama, Connecticut, Delaware, District of Columbia, Florida, Georgia, Illinois, Indiana, Kentucky, Louisiana, Maine, Maryland, Massachusetts, Mississippi, New Hampshire, New Jersey, New York, North Carolina, Ohio, Pennsylvania, Rhode Island, South Carolina, Tennessee, Vermont, Virginia, and West Virginia.
Native distribution[2]
Synonyms[2]

Basionym

  • Aster undulatus L.
Alphabetical list
    • Aster asperifolius E.S.Burgess
    • Aster asperulus Torr. & A.Gray
    • Aster autumnalis Wender. ex Nees
    • Aster baldwinii Torr. & A.Gray
    • Aster claviger E.S.Burgess
    • Aster corrigiatus E.S.Burgess
    • Aster diversifolius Michx.
    • Aster gracilescens E.S.Burgess
    • Aster heteromallus Wender.
    • Aster linguiformis E.S.Burgess
    • Aster loriformis (E.S.Burgess) E.S.Burgess
    • Aster mohrii E.S.Burgess
    • Aster paniculatus Nutt.
    • Aster proteus E.S.Burgess
    • Aster sagittifolius Elliott
    • Aster scaber Elliott
    • Aster sylvestris E.S.Burgess
    • Aster triangularis E.S.Burgess
    • Aster truellius E.S.Burgess
    • Aster undulatus var. abruptifolius E.S.Burgess
    • Aster undulatus var. asperulus Alph.Wood
    • Aster undulatus var. diversifolius (Michx.) A.Gray
    • Aster undulatus var. loriformis E.S.Burgess
    • Aster undulatus var. sylvestris Howe
    • Aster undulatus var. torquatus E.S.Burgess
    • Aster undulatus var. triangularis E.S.Burgess

Symphyotrichum undulatum (formerly Aster undulatus) is a species of flowering plant in the family Asteraceae native to eastern North America. Commonly known as wavyleaf aster,[3] it is a perennial, herbaceous plant that flowers August through October and may reach heights between 30 and 160 centimeters (1 and 5 feet).

Description

Symphyotrichum undulatum is a perennial, herbaceous plant that flowers from August through October, growing to heights between 30 and 160 centimeters (1 and 5 feet) from a cespitose rootstock. The roots can have short rhizomes or branched and woody caudices.[3]

Its flowers have blue to purple, or sometimes lilac, ray florets and cream or light yellow, then purple, disk florets.[3]

Fruit

The fruits (seeds) of Symphyotrichum undulatum are not true achenes but are cypselae, resembling an achene but surrounded by a calyx sheath. This is true for all members of the Asteraceae family.[4] After pollination, they become dull purple to light brown or tan with an oblong-obovoid compressed shape, 1.7–2.2 mm[lower-alpha 1] in length with 3–4 nerves, and with a few stiff, slender bristles on the surface (strigillose). They also have tufts of hairs (pappi) which are cream or rose-tinged and 3.5–5 mm in length.[3]

Chromosomes

The species has a monoploid number (also called base number) of eight chromosomes (x = 8). Individual plants with 16 and 32 sets of its chromosomes have been found, meaning the species is diploid and tetraploid.[3]

Conservation

As of October 2022, NatureServe listed S. undulatum as Secure (G5) globally; Secure (S5) in New Jersey, New York, North Carolina, and West Virginia; Apparently Secure (S4) in Virginia; Vulnerable (S3) in Indiana and Nova Scotia; and, Critically Imperiled (S1) in Illinois. The species' global status was last reviewed on 25 July 2016.[1]

Notes

  1. ↑ To convert millimeters to inches, divide the number of millimeters by exactly 25.4.

Citations

  1. 1 2 NatureServe 2022.
  2. 1 2 3 POWO 2022.
  3. 1 2 3 4 5 Brouillet et al. 2006.
  4. ↑ Barkley, Brouillet & Strother 2006.

References

  • Barkley, T.M.; Brouillet, L.; Strother, J.L. (2006). "Asteraceae". In Flora of North America Editorial Committee (ed.). Flora of North America North of Mexico (FNA). Vol. 19. New York and Oxford: Oxford University Press. Retrieved 3 October 2022 – via eFloras.org, Missouri Botanical Garden, St. Louis, MO & Harvard University Herbaria, Cambridge, MA.
  • Brouillet, L.; Semple, J.C.; Allen, G.A.; Chambers, K.L.; Sundberg, S.D. (2006). "Symphyotrichum undulatum". In Flora of North America Editorial Committee (ed.). Flora of North America North of Mexico (FNA). Vol. 20. New York and Oxford: Oxford University Press. Retrieved 10 July 2021 – via eFloras.org, Missouri Botanical Garden, St. Louis, MO & Harvard University Herbaria, Cambridge, MA.
  • NatureServe (1 October 2022). "Symphyotrichum undulatum Wavyleaf Aster". explorer.natureserve.org. Arlington, Virginia. Retrieved 19 October 2022.
  • POWO (2022). "Symphyotrichum undulatum (L.) G.L.Nesom". Plants of the World Online. Royal Botanic Gardens, Kew. Retrieved 19 October 2022.
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