— 6 — 



the stems and branches, and grows in loose wide mats. Its spores mature 

 much later, July-September. Drummondia has the general appearance of 

 an Orthotrichum with an exserted capsule, but it grows on trees only. 



O. PoRTERi Aust. and O. Lescurii Aust. are our only other rock- 

 inhabiting forms, at least the only ones at all likely to be met with. They 

 have usually been treated as varieties of O. cupulatum Hoffm., but both Dr. 



Plate II. — Orthotricum anomalum (Bry. Eur. PI. 210). 



Figs. 2, 3, 4 and 5 — Leaves; x and indicate where the sections jx and 

 3x' were made. Fig. 11 — Vaginula. Fig. 8 — Deoperculate capsule and seta. 

 Fig. 12 — Peristome highlyjmagnified ; the tooth at the left has been redraw n 

 to show the lamellae of the preperistome. 



