FIG. 3. — Riccardia gasparii Reeb & Gradst. sp. nov.: A, thalli; B, main axis in cross section; C, ultimate branches in cross section; D, male branch; E, female branches. From Reeb MTV1246 (PC0771050), MTM12134 (PC0763884). Riccardia inconspicua (Steph) Reeb & Bardat: F, thalli; G, portion of ultimate branch with papillae; H, branched papilla (arrow); I, ultimate branch and male branch with papillae; J, main axis in cross section; K, ultimate branch in cross section. From Reeb MTM1295 (PC0763882), Pócs & Mwanjabe 6464/BP, Gardiner s.n. (Type of Aneura exigua), Jungner s.n. (Type of Aneura inconspicua). Riccardia longispica (Steph.) Pearson: L, thalli; M, main axis in cross section; N, ultimate branches in cross section; O, two male branches; P, female branch; Q, male branch. From Konya 9644/D, Bardat PF.2 (PC0763860), Pócs 9612/CD, De Lisle 199 (Type), Jones 1542b. Riccardia longispica (Steph.) Pearson phenotype erosa: R, thalli; S,two calyptra's; T, main axis in cross section; U, thallus mat showing erect, concave ultimate branches; V, ultimate branch in cross section; W, branch apex with papillae and immature gemmae. From Porley U35b, Pócs 6052/CV, Reeb CRAE193 (PC0763859). Scale bars: A, F, L, R, U, 1 mm; B, C, M-P, Q, S, 500 µm; D, E, G-K, T, 200 µm; H, V, W, 100 µm.