TASMANIAN BJRYOPHYTA, Part III.* 



By L. RoDWAY. 



(Bead 13th October, 1913.) 



Fara= 7— BRYACEAE. 



Habit erect or suberect, simple, new branches springing 

 from the base or in pairs from close below the inflorescence. 

 Leaves in many rows, ovate, lanceolate or subulate, nerved, 

 often dentate and limbate at the margin, smooth surface, 

 cells rather large rhomboid or hexagonal to nearly linear. 

 Capsule on a long seta, globose, ovate, or pyriform, usually 

 cernuous or pendulous; lid conic or shortly rostrate; cal- 

 yptra, small, cucuUate, smooth, narrow ; peristome in the 

 most advanced forms of two well-formed series; the exos- 

 tome of 16 lanceolate, cartilaginous teeth, formed of a 

 double row of short cells with a zi<^-zao- suture iu the centre 

 on the e/xterior surface, trabecules on the inner ; endostome 

 with a deep membrane and 16 slender, porous processes, two 

 or three slender cilia between the processes. From this all 

 states of reduction may be met with till both series are 

 reduced to a rudimentary condition. 



A natural family most easily recognised by the cell 

 structure. Also in the more typical forms by the pen- 

 dulous pyrifoimi capsule with' perfect peristome, besides the 

 habit of innovations obscuring the terminal insertion of the 

 seta. 

 Peristome poorly developed. 



MiELiCHHOFERiA. Exostome rudimentary; endostome 



of 16 slender processes from a short membrane. 



Leaves lanceolate. 

 Orthodontium. Exostome of 16 very short lanceolate 



teeth ; endostome of 16 short, slender processes. 



Leaves narrow linear. 



Peristome well d^eveloped. Fruiting terminal. 



Mniobrtum. Cells long-rhomboid. Leaves ovate-lan- 

 ceolate. Capsule short and broad. 



PoHLiA. Cells linear. Leaves ovate-lanceolate. Cap- 

 sule oblong. 



Leptobryum. Cells nearly linear. Leaves long-linear. 

 Capsule pyriform with a slender neck. 



* Parts I. and II. of this revision of the Bryophyta of Tasmania were published 

 in these Papers and Proceedings, 1912, pp. 3-24 (Part I.), 87-138 (Part II.). The 

 present part completes the Mosses ; the Hepatics will be included in a subse- 

 quent part. No new species are proposed. 



