Acorus calamus

Characteristics
Monocots
Acoraceae
Acorus
Acorus calamus L.
European Sweet Flag; Calamus
forb
1
**
Not Native AGCP (OBL), EMP (OBL) (NWPL) TN[SNR] KY[SNA] (State Rank) G4? (Global Rank)
Anther Type
Basifixed
Armaments
No
Base Flower Color
White; Yellow
Carpel Number/Pistil
3
Duration
Perennial
Fruit Complexity
Need more information
Fruit Dehiscence
need more information
Fruit Type
Berry; Capsule
Fruit Wet/Dry
Dry
General Ecology
Aquatic; Mudflat/Wet Woods
Growth Habit
forb
Inflorescence Position
axillary
Inflorescence Types
spike; spadix
Leaf Arrangement
basal; alternate; equitant
Leaf Complexity
simple
Leaf Dissection
0
Leaf Duration
deciduous
Leaf Fragrance
Yes; cinnamon; tangerine
Leaf Petiole Type
sessile
Leaf Rank
2-ranked
Leaf Type
sword-like; equitant
Leaf Venation
parallel
Leaflet Margins
entire
Leaflet Number
0
Moisture Requirements
Hydric; Inundated
Natural Area Presence
GILES; GRSM
Ovary Position
Superior
Overall Flower Symmetry
Actinomorphic
Ovules per Carpel
2; 3; 4; 5
Parent Rock
Calcareous; Chert; Limestone; Sandstone
Perianth Present
Yes
Pistil Complexity
Compound
Pistil Number
1
Placentation Type
Axillary; Apical
Soil Composition
Mineral
Soil pH
Acidic; Alkaline; Circumneutral
Stamen Number
6
Tepal Number
6
Unconsolidated Rock
Yes
Unconsolidated Size Class
Clay; Silt
Woody Herbaceous
Herbaceous
View details of Herbarium specimens
** Not applicable or data not available.
Classification
-
Acorus
Acorus calamus L. - European Sweet Flag; Calamus
Species Distribution Map

This species has been reported in the counties highlighted in the interactive distribution map below. Click on a county to display its name.

Click the question mark icon () to view additional information about the ecoregions shown. In the map legend, there are links to toggle the visibility of the ecoregions and/or their labels. In addition, clicking on an ecoregion name will highlight that region on the map.

Ecoregions
  • Southeastern Plains
    • Blackland Prarie
  • Blue Ridge Mountains
  • Ridge and Valley
  • Cumberland Plateau
  • Cumberland Mountains
  • Allegheny Plateau
  • Interior Plateau
    • Bluegrass Region
    • Nashville Basin
    • Pennyroyal Karst Plain
    • Western Highland Rim
    • Eastern Highland Rim
  • Interior River Valleys and Hills
    • Shawnee / Caseyville Hills
  • Mississippi Alluvial Plain
  • Mississippi Valley Loess Plains
Synonyms
Specimens and Distribution

Click on an Accession Number to view additional details about the specimen.

Range of years during which specimens were collected:

Plant Photos
Acorus calamus - 2
Acorus calamus - Joey Shaw View Full Size
Acorus calamus - 19
Acorus calamus - Theo Witsell View Full Size
Acorus calamus - 19
Acorus calamus - Theo Witsell View Full Size
Acorus calamus - 2
Acorus calamus - Joey Shaw View Full Size
Acorus calamus - 2
Acorus calamus - Joey Shaw View Full Size