Acorus L.

Last edited by Pieter B. Pelser, 18 May 2021
  1. Acorus calamus L., Sp. Pl. (1753) 324; Merr., Fl. Manila (1912) 130; EPFP 1 (1922) 175; De Padua et al., PROSEA 12 (1999) 81. Distribution: Continental Asia, N America. LUZON: Benguet, Mountain Province. Notes: Naturalized in ditches, pools, fishponds and marshes (De Padua et al. 1999). Naturalized.
    • var. angustatus Besser, Flora 17(Beibl.) (1834) 30. Distribution: Continental Asia. LUZON: Benguet, Mountain Province. Notes: In swamps, c. 1300m, thoroughly naturalized; cultivated here and there at low elevation.
  2. Acorus gramineus Soland. in Aiton, Hort. Kew. 1 (1789) 474; Merr., PJS 10 c (1915) Bot. 288; EPFP 1 (1922) 175. Distribution: Bangladesh, Cambodia, China, Japan, Korea, Laos, Mongolia, Myanmar, Philippines, Taiwan, Thailand, Tibet, Vietnam. LUZON: Laguna. Notes: Known from Laguna from San Antonio, BS 14949. On boulders of stream beds at low and medium elevation. Native.