5 13 S. Shallow in the simple sheen, more polygamous, orbicular, entire, above smooth, pale-yellow above, beneath of nearly the same color, marked with small yellow cyphellae. Apothecia scattered. Thallus, thin and fleshy margin entire, the disk brownish-black. Spores fusiform, without color. 10-12 x 6 mm. Parvula widespread. Tread. West. Sandy Port. Stn. of Magellan. This plant is not described in Syl. Bry. There are two 14- 3. Riccardia and 14. S. billardieri ms. Shallow in the simple fragment, laciniate, the laciniae elongate, remote lobate, above green- brown-laciniis, glaucescent, beneath, black, marked, without cyphellae. Apothecia scattered, rare, the margin entire, the disk brownish-black. Spores fusiform 2-locular, brown. 10 x 3 mm. Tierra Fuego. 11. Nephroma 1. N. antarcticum (Jacq.) Nyl.