Aptychella oblongifolia (Pylaisiadelphaceae) found in the Kii Peninsula, new to Japan

Abstract

Aptychella oblongifolia H.Akiyama is added to the moss flora of Japan. This species is closely related to A. brevinervis （M.Fleisch.） M.Fleisch., but differ in smaller plant size, oblong‒lancerolate leaves usually less than 2 mm long with narrowly decurrent bases to the stem. Discription and illustration based on Japanese plants are provided.