Symphyotrichum spathulatum
| Symphyotrichum spathulatum | |
|---|---|
| |
Scientific 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. Occidentales
|
| Species: | S. spathulatum
|
| Binomial name | |
| Symphyotrichum spathulatum | |
| Varieties[2] | |
|
List
| |
| |
| Native distribution[2] | |
| Synonyms[2] | |
|
Basionym
Species
Varieties | |
Symphyotrichum spathulatum (formerly Aster spathulatus) is a
disk florets.[5]
Description
Symphyotrichum spathulatum blooms in July and August and is a
entire leaves with little to no hair that are 5 to 15 centimeters (2 to 6 inches) long. The leaves are linear or elliptical, narrow, and sometimes obovate at the base of the plant. The upper leaves are shorter at 3 to 6 centimeters (1+1⁄8 to 2+3⁄8 inches).[5]
The
disk florets.[5]
The seeds are brown, hairy
cypselae 2.5–3.5 mm (1⁄10–3⁄20 in) long with about 4 nerves and white pappi that are 5–7 millimeters (1⁄5–3⁄10 inch) long.[5]
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Chromosomes
Symphyotrichum spathulatum has a base number of x = 8.octaploid cytotypes with respective chromosome counts of 16, 32, 48, and 64 have been reported, depending upon the infraspecies, as follows:
- S. spathulatum var. spathulatum: 2n = 2x = 16, 2n = 4x = 32, 2n = 6x = 48, and 2n = 8x = 64[7]
- S. spathulatum var. intermedium: 2n = 4x = 32, 2n = 6x = 48, and 2n = 8x = 64[8]
- S. spathulatum var. yosemitanum: 2n = 2x = 16, 2n = 4x = 32[9]
Taxonomy
Symphyotrichum spathulatum is one of the species within Symphyotrichum sect. Occidentales.[a][11] S. spathulatum was first formally described by John Lindley in 1834 as Aster spathulatus.[12]
Three varieties of Symphyotrichum spathulatum are recognized, including the autonym:[5]
- S. spathulatum var. spathulatum
- S. spathulatum var. intermedium
- S. spathulatum var. yosemitanum
S. spathulatum is one of the parents of the two
Distribution and habitat
Symphyotrichum spathulatum is found in the western
coniferous forests.[7]
S. spathulatum var. intermedium is native to British Columbia, California, Idaho, Nevada, Oregon, and Washington state,[3] only occasionally being found in California and Nevada. It grows at 1,200–2,200 m (3,900–7,200 ft) in grasslands and meadows on mountain slopes and in open coniferous forests.[8]
S. spathulatum var. yosemitanum is restricted from southern Oregon to the Sierra Nevada of California. It can be found at 1,200–2,200 m (3,900–7,200 ft) in oak woodlands and coniferous forests.[15]
Conservation
As of July 2021[update],
Extirpated (SX) in Alberta.[1] S. spathulatum var. intermedium and S. spathulatum var. spathulatum were reported as Secure Varieties (T5),[16][17] and no status rank was given for S. spathulatum var. yosemitanum.[18]
Notes
- ^ Occidentales is listed as a section in Flora of Missouri,[10] whereas on Canadian botanist John C. Semple's Astereae Lab website, it is given as a subsection of section Symphyotrichum.[11]
Citations
- ^ a b NatureServe 2021a.
- ^ a b c d e POWO 2021a.
- ^ a b POWO 2021b.
- ^ POWO 2021c.
- ^ a b c d e Brouillet et al. 2006a.
- ^ Semple n.d.a.
- ^ a b Brouillet et al. 2006c.
- ^ a b Brouillet et al. 2006b.
- ^ Allen 2012.
- ^ Yatskievych n.d.
- ^ a b Semple 2021a.
- ^ IPNI 2021.
- ^ Semple 2021b.
- ^ Semple n.d.b.
- ^ Brouillet et al. 2006d.
- ^ NatureServe 2021b.
- ^ NatureServe 2021c.
- ^ NatureServe 2021d.
References
- Allen, G.A. (2012). "Symphyotrichum spathulatum var. yosemitanum". In Jepson Flora Project (ed.). Jepson eFlora. The Jepson Herbarium, University of California, Berkeley. Retrieved 23 September 2022.
- Brouillet, L.; Semple, J.C.; Allen, G.A.; Chambers, K.L.; Sundberg, S.D. (2006a). "Symphyotrichum spathulatum". 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 23 July 2021 – 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. (2006b). "Symphyotrichum spathulatum var. intermedium". 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 23 July 2021 – 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. (2006c). "Symphyotrichum spathulatum var. spathulatum". 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 23 July 2021 – 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. (2006d). "Symphyotrichum spathulatum var. yosemitanum". 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 23 July 2021 – via eFloras.org, Missouri Botanical Garden, St. Louis, MO & Harvard University Herbaria, Cambridge, MA.
- IPNI (2021). "Aster spathulatus Lindl". International Plant Names Index (IPNI). Royal Botanic Gardens, Kew; Harvard University Herbaria & Libraries; Australian National Botanic Gardens. Retrieved 22 July 2021.
- NatureServe (2 July 2021a). "Symphyotrichum spathulatum Western Mountain Aster". explorer.natureserve.org. Arlington, Virginia. Retrieved 11 July 2021.
- NatureServe (2 July 2021b). "Symphyotrichum spathulatum var. intermedium". explorer.natureserve.org. Arlington, Virginia. Retrieved 23 July 2021.
- NatureServe (2 July 2021c). "Symphyotrichum spathulatum var. spathulatum". explorer.natureserve.org. Arlington, Virginia. Retrieved 23 July 2021.
- NatureServe (2 July 2021d). "Symphyotrichum spathulatum var. yosemitanum". explorer.natureserve.org. Arlington, Virginia. Retrieved 23 July 2021.
- POWO (2021a). "Symphyotrichum spathulatum (Lindl.) G.L.Nesom". Plants of the World Online. Royal Botanic Gardens, Kew. Retrieved 22 July 2021.
- POWO (2021b). "Symphyotrichum spathulatum var. intermedium (A.Gray) G.L.Nesom". Plants of the World Online. Royal Botanic Gardens, Kew. Retrieved 22 July 2021.
- POWO (2021c). "Symphyotrichum spathulatum var. yosemitanum (A.Gray) G.L.Nesom". Plants of the World Online. Royal Botanic Gardens, Kew. Retrieved 22 July 2021.
- Semple, J.C. (n.d.a). "Symphyotrichum subsect. Occidentales Foliacei Asters". www.uwaterloo.ca. Ontario. Archived from the original on 28 June 2021. Retrieved 23 July 2021.
- Semple, J.C. (n.d.b). "Symphyotrichum subg. Ascendentes". www.uwaterloo.ca. Ontario. Archived from the original on 22 July 2021. Retrieved 22 July 2021.
- Semple, J.C. (17 May 2021a). "Classification of Symphyotrichum". www.uwaterloo.ca. Ontario. Archived from the original on 21 June 2021. Retrieved 23 July 2021.
- Semple, J.C. (14 May 2021b). "Symphyotrichum ascendens — Long-leaved Aster, Intermountain Aster, Western Aster". www.uwaterloo.ca. Ontario. Archived from the original on 22 July 2021. Retrieved 22 July 2021.
- Yatskievych, G., ed. (n.d.). "Symphyotrichum sect. Occidentales (Rydb.) G.L. Nesom". Flora of Missouri. Missouri Botanical Garden. Retrieved 23 July 2021 – via Tropicos.org.