Grimmiace^.] 88 [Weissia. 



with slightly thickened lateral walls ; stomata immersed, the border cells 

 projecting or in some cases not. Annulus persistent, double, very narrow. 

 Teeth 8, bigeminate, cleft nearly to base into i6, reflexed against wall of 

 capsule, orange-red, very finely papillose, cilia 8, orange, usually 

 with 8 intermediate ones. Lid conic, rostrate, yellow, red at 

 margin. Calyptra conic, campanulate, naked, plicate, lacerate at base, 

 yellowish with a fuscous point. Male infl. gemmiform, at base of a 

 female branch. 

 Hab. — Trunks of trees, sometimes on walls. Fr. 5 — 6. 



Frequent in subalpine districts. Hell-cleft and High Force, Teesdale (Spruce 1843) ! ! 

 Paper Mill wood, Over (Wilson 1827) ! Llanffinan {Wilson 1855) ! Blair Athole 

 (Miss Mclnroy 1859) ! Dailly (Hunt 1865) ! ! Colin Glen, Belfast (Stewart 1868). 

 Antrim and Derry (Moore). Pomeroy, Tyrone (Stewart 1878)!! Muckross (Holt 

 1885) ! ! Rushen abbey, I. of Man (Holt 1884) ! ! Glenalla, Donegal (Holt). Burgh 

 Castle, Suffolk (Dixon). Lydford and Kitt's steps (Holmes). On elder, Culag bridge, 

 Lochinver (Braithwaite 1887) ! ! 



Var. p. Winter! {Schimp.) 



Tufts irregular, deep green above, fuscous at base, capsule more exserted, 

 oblongo-cylindraceous, with paler peristome. 



Syh. —Orthotrichum Winteri Schimp. Bry. eur. Suppl. HI — IV, t. 11. Synops. 2ed. 335. Milde 

 Bry. siles. 179. Vent, in HusN. Muse. gall. 192, t. 52. 



Hab. — Penzance, Cornwall [Cnrnow 1868) ! ! distributed in Rabenhorst's 

 Bryotheca No. 1079, under the name of O. pulchellum. 



This lovely little moss has the leaves slightly crisped when dry, and 

 thus leads us towards the next genus, to which it also approximates by the 

 lengthened fruit stalks ; the red peristome, 16 cilia and smooth calyptra 

 readily distinguish it. In the moorland districts of N. Yorkshire and the 

 Lowlands of Scotland it is quite common. 



8. WEISSIA Ehrh. 

 Hannov. mag. 1779, p. 1003. 



Growing in small cushions on trees or very seldom on rocks, the 

 stems branched, erect or decumbent. Leaves long, lanceolate flexuose, 

 curled and twisted when dry, the base dilated and concave, with linear 

 chlorophyllose cells in the middle and dilated hyaline ones at the sides. 

 Calyptra yellow, plicate, cleft at base, covered with long flexuose yellow 

 hairs. Capsule oval 8-striate, exserted on a tall pedicel, with a very 

 long neck, the peristome as in Orthotrichum, ochrea indistinct or none. — 

 Der. after F. G. Weiss of Gottingen. 



A very natural genus in habit and facies, and depending more on these 

 for separation from Orthotrichum, than on any structural pecuharities, 



