BY R. A. BASTOW, F.L.S. 217 



(&.) Perianth leafy. (PL xviii.) 

 1. Fruit terminal. 



17. ISOTACHIS. 



Leaves and stipules nearly equal ; perianth tubular ; 

 mouth connivent. (PI. xviii.) 



18. Scapania. 



Leaves complicate ; no stipules ; perianth compressed 

 in plane with leaves ; mouth truncate. (PI. xix.) 



19. GOTTSCHEA. 



Leaves with adherent lobe ; perianth overlaid by in- 

 volucral leaves. (PI. xx.) 



***Leave» incubous; base with the lowest angle on the underside 

 of the stem, (PI. iii., f. 4). 



t Without an inferior lesser lobe. 



(«.) Perianth leafy. 



1. Fruit terminal. 



20. Sendtnera. (PI. xxi.) 



2. Fruit lateral. 



21. Leperoma. 



Leaves and stipules deeply cleft ; calyptra adnate with 

 the involucral leaves ; fruit near the top of stem. 

 (PI. xxi.) 



22. Lepidozia. 



Leaves and stipules usually deeply cleft ; perianth near 

 the base of the stem, trigonous. (Pis. xxii., xxiii., 

 xxiv., XXV.) 



23. Mastigobryum. 



Leaves and stipules entire, or with their apices truncate, 

 dentate ; perianth in the lower part ot the stem, 

 trigonous. (PI. xxvi.) 



1 1 With an inferior lesser lobe. 



{a.) Lobule Plane. 

 1. Fruit terminal. 



24. Radula. 



Perianth compressed in plane with leaves ; mouth 

 truncate ; no stipules. (PI. xxvi.) 



