BRYACE.E.] 157 [Plagiobryum. 



broader, narrowed at base, quite entire, nerve reddish, reaching middle, 

 often forked, all with a reddish limb of several rows of very narrow cells, 

 the other cells lax rhomboido-hexagonal, or 5 8 angled ; those of the 

 anterior rows remote minute lanceolate. Perich. bracts small, lane., 

 caps, pendulous on a red seta geniculate at base, obovate with a short 

 neck, soft pale brown, rufescent, wide-mouthed when old ; lid conic 

 rufous, annulus of many series of cells; teeth small, reddish-yellow, 

 endostome thin, hyaline, with I 2 short cilia. Male plant more slender, 

 upper leaves acuminate-ligulate, perig. bracts oval-oblong, nerve 

 obsolete. 

 HAS. Wet clay banks and by streams, rare. Fr. 34. 



By the Dart, Devon (Tozer) ! Penzance (Ralfs) ! ! Torquay (Miss Griffiths). Henfield 

 (Borrer). Near Hurstpierpoint (Mitten) ! Swanscombe Wood, Kent (Johns) \ Plymouth 

 and Buckfastleigh (Holmes 1867) ! ! By the Lee, Cork (Alexander 1840). On the 

 Wye at Breinton (Ley). 



6. PLAGIOBRYUM Lindb. 



Oefv. vet. akad. foerh. xix, 606 (1862). 



Plants short in small tufts, the leaves resembling those of Bryum, 

 laxly areolate, closely imbricated. Caps, horizontal or decurved, 

 gibbous, with a very long narrow neck, the mouth oblique ; calyptra 

 cucullate, peristome as in Pohlia. Der. TrXaytos oblique, (3pvov Bryum. 



The name Zieria of Schimper cannot possibly be used for this moss, as 

 it was adopted by Smith for a genus of Australian Rutaceae in 1798 (Trans. 

 Linn. Soc. iv, 216). A third species P. leptocladon (SULLIV.) is found in Cuba. 

 The gibbous capsule and oblique mouth give them somewhat the aspect of 

 Funaria, and the teeth of the peristome are shorter than the processes of the 

 endostome. 



CLAVIS TO THE SPECIES. 



Leaves oval plane, nerve vanishing. Zierii. 

 lanceolate, revolute, nerve excurrent. demissum. 



i. PLAGIOBRYUM ZIERII (Dicks.) Lindb. 



Dioicous ; in short silvery pale reddish tufts with julaceous 

 branches. Leaves ovate-acuminate, imbricated, entire, nerve vanish- 

 ing below apex. Caps, clavate, subpyriform, cernuous, gibbous, 

 mouth oblique; endostome longer than peristome, cilia imperfect. 

 (T. LXIX, A.) 



