Didymodon rigidulus var. gracilis (schleich. ex Hook. & Grev.) R.h.zander

Stem leaves appressed to weakly spreading when dry, costa usually percurrent to short-excurrent as a rigid subula, short-lanceolate, seldom-lanceolate, base evenly broadened, ovate to elliptic or oblong, proximal cells short-rectangular, distal laminal cells usually papillose, quadrate, with quadrate lumens, occasionally 2-stratose on the margins in patches; gemmae often present in distal leaf axils. Peristome teeth short and straight to long and twisted.