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Acoraceae
Acorus

not marked as a favorite taxon Acorus americanus (Rafinesque) Rafinesque ssp. americanus. Common name: American Calamus, Sweetflag. Phenology: May-Jun. Habitat: Marshes, wet meadows, other wet areas, limey seeps. Distribution: NS west to AK, south to n. NJ, DC (allegedly), c. OH, c. IN, c. IL, IA, NE, MT, ID, and WA. Because this species has not generally been recognized in floras, its distribution is poorly known; additional distributional records should be expected and sought.

Glossary (beta!)

Origin/Endemic status: Native

Taxonomy Comments: This species is apparently a fertile diploid. Sennikov et al. (2024) distinguish an Asian subspecies, Acorus americanus ssp. triqueter (Turczaninow ex Schott) D.D. Sokoloff, M.V.Remizowa, & Sennikov

Synonymy ⓘ: = POWO, Sokoloff et al (2024); = Acorus americanus (Raf.) Raf. — AqW, Can, FNA22, Il, K4, Mi, NE, NS, NY, Pa; < Acorus americanus (Raf.) Raf. — W; < Acorus calamus L. — C, F, G, GrPl, GW1, NeUS, Tat. Basionym: Acorus calamus L. var. americanus Raf. 1828

Links to other floras: = Acorus americanus - FNA22

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Wetland Indicator Status:

  • Atlantic and Gulf Coastal Plain: OBL
  • Great Plains: OBL
  • Midwest: OBL
  • Northcentral & Northeast: OBL

Heliophily ⓘ: 9

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image #1 of Acorus americanus ssp. americanus© Nate Martineau, some rights reserved (CC BY-NC), uploaded by Nate Martineau source CC-BY-NC, permission granted to NCBG | Original Image ⭷
image #2 of Acorus americanus ssp. americanus© Erik Danielson source | Original Image ⭷
image #3 of Acorus americanus ssp. americanus© Nate Martineau, some rights reserved (CC BY-NC), uploaded by Nate Martineau source CC-BY-NC, permission granted to NCBG | Original Image ⭷
image #5 of Acorus americanus ssp. americanus© Nate Martineau, some rights reserved (CC BY-NC), uploaded by Nate Martineau source CC-BY-NC, permission granted to NCBG | Original Image ⭷
image #7 of Acorus americanus ssp. americanus© Nate Martineau, some rights reserved (CC BY-NC), uploaded by Nate Martineau source CC-BY-NC, permission granted to NCBG | Original Image ⭷

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Horticultural Information

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