Biology:Oclemena acuminata
| Oclemena acuminata | |
|---|---|
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| Hancock County, Maine (September) | |
Scientific classification 
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| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Clade: | Eudicots |
| Clade: | Asterids |
| Order: | Asterales |
| Family: | Asteraceae |
| Genus: | Oclemena |
| Species: | O. acuminata
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| Binomial name | |
| Oclemena acuminata (Michx.) Greene[2]
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| Synonyms[3] | |
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Homotypic synonyms
Heterotypic synonyms
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Oclemena acuminata, commonly known as whorled wood aster, is a species of flowering plant in the aster family Asteraceae. It is native to eastern North America. It is one of the parent species of the hybrid known as Blake's aster.
Description
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Oclemena acuminata is a perennial, herbaceous plant that propagates via a swollen tuber at the tip of a slender, elongated rhizome. It stands 10–80 cm (4–31 in) tall with 11–18 leaves clustered at the summit of the stem. Each leaf is 10–45 mm (0.4–1.8 in) wide with prominent teeth and flat margins. It has 5–46 flower heads (nodding in bud), each borne on a thin peduncle 0.9–4.5 cm (0.4–1.8 in) long. Each flower head has 15 ray flowers, white (or tinged with pink), and 14–30 disc flowers.[4][5][6]
Oclemena acuminata is closely related to Oclemena nemoralis. Hybrid populations can occur wherever the parent species come in contact, that is, at the forest-bog ecotone. The hybrid is known as Blake's aster.
Taxonomy
Oclemena acuminata was first described as Aster acuminatus by the French botanist André Michaux in 1803.[7] The American botanist Edward Lee Greene transferred Aster acuminatus Michx. to genus Oclemena in 1903.[2] As of December 2025[update], the botanical name Oclemena acuminata (Michx.) Greene is widely accepted.[3][8][9][10]
Distribution and habitat
Oclemena acuminata is native to eastern North America. Its range extends from Newfoundland in Canada to the U.S. state of Georgia.[6]
References
- ↑ NatureServe (5 December 2025). "Oclemena acuminata" (in en). Arlington, Virginia. https://explorer.natureserve.org/Taxon/ELEMENT_GLOBAL.2.138996/.
- ↑ 2.0 2.1 "Oclemena acuminata (Michx.) Greene". International Plant Names Index (IPNI). Royal Botanic Gardens, Kew. https://www.ipni.org/n/171495-2.
- ↑ 3.0 3.1 "Oclemena acuminata (Michx.) Greene" (in en). Royal Botanic Gardens, Kew. http://www.plantsoftheworldonline.org/taxon/171495-2.
- ↑ Greene (1903).
- ↑ Nesom (1995), pp. 175–178.
- ↑ 6.0 6.1 Brouillet, Luc (2006), "Oclemena acuminata", in Flora of North America Editorial Committee, Flora of North America North of Mexico (FNA), 20, New York and Oxford, http://www.efloras.org/florataxon.aspx?flora_id=1&taxon_id=250067215, retrieved 6 December 2025
- ↑ "Aster acuminatus Michx.". International Plant Names Index (IPNI). Royal Botanic Gardens, Kew. https://www.ipni.org/n/310522-2.
- ↑ "Oclemena acuminata (Michx.) Greene". https://wfoplantlist.org/taxon/wfo-0000082836-2025-06.
- ↑ "Oclemena acuminata". Natural Resources Conservation Service PLANTS Database. USDA. https://plants.usda.gov/core/profile?symbol=OCAC.
- ↑ "Oclemena acuminata (Michx.) Greene". https://data.canadensys.net/vascan/taxon/3313.
Bibliography
- Greene, Edward Lee (1903). "Further Segregates from Aster". Leaflets of Botanical Observation and Criticism 1: 4–7. https://www.biodiversitylibrary.org/page/396130#page/7/mode/1up. Retrieved 10 December 2025.
- Nesom, Guy L. (1995). "Review of the taxonomy of Aster sensu lato (Asteraceae: Astereae), emphasizing the new world species". Phytologia 77 (3): 141–297. https://www.biodiversitylibrary.org/page/12960063#page/5/mode/1up. Retrieved 10 December 2025.
External links
- "Oclemena acuminata (Michx.) Greene". Compositae Working Group (CWG). 2025. https://www.compositae.org/gcd/aphia.php?p=taxdetails&id=1092240.
Wikidata ☰ Q15548303 entry
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