Biology:Symphyotrichum undulatum
| Symphyotrichum undulatum | |
|---|---|
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Scientific classification 
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| 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
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| Binomial name | |
| Symphyotrichum undulatum | |
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| Native distribution[2] | |
| Synonyms[2] | |
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Basionym
Alphabetical list
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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]
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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
- ↑ To convert millimeters to inches, divide the number of millimeters by exactly 25.4.
Citations
References
- Barkley, T.M. (2006), "Asteraceae", in Flora of North America Editorial Committee (in en), Flora of North America North of Mexico (FNA), 19, New York and Oxford, http://www.efloras.org/florataxon.aspx?flora_id=1&taxon_id=10074, retrieved 3 October 2022
- Flora of North America Editorial Committee, ed. (2006), "Symphyotrichum undulatum" (in en), Flora of North America North of Mexico (FNA), 20, New York and Oxford, http://www.efloras.org/florataxon.aspx?flora_id=1&taxon_id=250067692, retrieved 10 July 2021
- "Symphyotrichum undulatum Wavyleaf Aster". Arlington, Virginia. 1 October 2022. https://explorer.natureserve.org/Taxon/ELEMENT_GLOBAL.2.147081/Symphyotrichum_undulatum.
- "Symphyotrichum undulatum (L.) G.L.Nesom" (in en). Royal Botanic Gardens, Kew. 2022. http://www.plantsoftheworldonline.org/taxon/981914-1.
Wikidata ☰ {{{from}}} entry
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