Tortula pagorum - drawing by Celia Rosser, published in The Mosses of Southern Australia by George Scott & Ilma Stone. A sporophyte-bearing gametophyte is shown in the centre. To the left are drawings of leaf cells, on the lower right is a single gemma (about a fifth of a millimetre long) and above it are two gametophytes, one dry and closed but the other moist and open, with the gemmae showing.