Robert W. Freckmann Herbarium


  Acorus calamus L. image
Photographer: Damon A. Smith           

Botanical Illustration

Damon A. Smith

Kurt Stüber

Matthew L. Wagner

Matthew L. Wagner

Marion Sheehan
Family Acoraceae
Acorus calamus L.
sweet-flag
Acorus: the Latin akoron was the Greek name of an iris
calamus: from Greek mythological figure Kalamos, the son of Maiandros (aka Meander), god of the Meander River.
County distribution map- click for detailed distribution maps.
Detailed Distribution:
Town Range Maps
Google Dot Maps
Status: Introduced - naturalized
Plant: erect, perennial, emergent semi-aquatic up to 6' tall; sweet spicy smell when crushed; very long, aromatic rhizomes
Flower: yellow to brown, tiny, 6-parted; inflorescence a 2"-4" dense, thick, pointed spadix protruding from the side of leaf-like spathe; blooms June-July
Fruit:brown berry, dry on the outside
Leaf:sweetly aromatic, crowded at the base, long, narrow, sword-like, only midvein prominently raised, 1 wavy margin
Habitat: shallows, ponds, marshes, in water less than 20" deep; in sediment soil
(Glossary)

More Information Natural Communities Herbarium Specimens
All Acorus list Ethnobotany Information Google- Images or Text

Flora of North America (off site)
Synonyms 
Acorus americanus auct. non (Raf.) Raf.
Acorus calamus L. var. americanus auct. non (Raf.) Raf.

         
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