Resumen de 'Arundinella riparia' subsp. 'breviaristata' (Poaceae), a new rheophytic grass from Shikoku, Japan

Yasushi Ibaragi

• A new rheophytic grasa, Arundinella riparia subsp. breviaristata Ibaragi, ja described. It is similar lo subsp. riparia in leafanatomy, rhizome ahape and habitat, buí is different in awn length, spikelet length and distribution.