Acoraceae Martinov. Calamus Family.
The family consists only of Acorus, a genus of 2-4 species, perennial herbs. Although traditionally treated as part of the Araceae, a wide variety of morphological, anatomical, and embryological evidence supports the segregation of the Acoraceae (Grayum 1987), a segregation additionally supported by molecular studies (Duvall et al. 1993; Chase et al. 1993). The spathe in Acorus is not morphologically equivalent to the spathe of the Araceae.
Ref: Bogner & Mayo In Kubitzki (1998b); Chase et al. (1993); Duvall et al. (1993); Grayum (1987); Thompson (2000a) In Flora of North America Editorial Committee (2000). Show full citations.
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© Gary P. Fleming | 
© Toby Y, some rights reserved (CC BY), uploaded by Toby Y | Acorus gramineus source | Original Image ⭷