Acorus gramineus Aiton

Grassy-leaved Sweet Flag

To 45 cm tall but generally much shorter. Leaves soft and flexible, without a strongly prominent midrib. Spadix 5-10 cm long, 3-4 mm wide.This species is not or hardly aromatic when crushed.

A. calamus L., which is widespread in the Northern Hemisphere, is a generally more robust plant, the leaves being like those of the Iris rather than a grass; it also has a pink aromatic rhizome. 'Variegatus' has leaves striped yellow.

Japan, SE Asia, China.

Source: Spencer, R. (2005). Acoraceae. In: Spencer, R.. Horticultural Flora of South-eastern Australia. Volume 5. Flowering plants. Monocotyledons. The identification of garden and cultivated plants. University of New South Wales Press.

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Distribution map

Acorus gramineus 'Ogon'

Leaves striped pale green and cream.

Acorus gramineus 'Pusillus'


Acorus gramineus 'Variegatus'

Leaves striped white.

kingdom Plantae
phylum   Tracheophyta
class    Magnoliopsida
superorder     Lilianae
order      Acorales
family       Acoraceae
genus        Acorus L.