POLYTRIGHAGE^. 197 



SERIES II. Order VIII. POI.VTRICHACBJE. 



CATKARXSTEA. Ehrhart (Atrichum Beaiiv.). 



1. C. undulata [Linn.) Weh. el Mohr. 



Damp banks, and moist ground in shady places — very common. Fr. 

 Nov. —March. Ranges from sea level to over 1000 feet. 



OZiZGOTRZCHUnC Lamh. % B.C. 



1. O. incurvum {Ruds.) Lindb. (0. hercynicum L. ^- B.C.). 

 "Wet gravelly places on mountains — rare, though locally abundant. 

 Usually barren, but found in fruit in June by C . H . W. Ascends to nearly 

 2000 feet. 



Down— Bencrom, Deers' Meadow, Slieve Donard, Slieve Commedagh, 

 Tollymore Park, and by Bloodybridge River; C.H.W. 

 Speltha Mountain, Slievemeel Beg, and Slievenamady ; 

 H.W.L. Plentiful on granite sand by the Spinkwee River 

 above Tollymore Park ; S.A.S. 



POZiYTRXCKUm Billenius. 



1. P. nanuTn Bill. 



On sandstone rocks, and shaded sandy banks —frequent. Fr. Oct. — Feb. 



Down— Ditch banks on the hiU above Holywood, and at the Manyburn 

 Glen; Templeton. Slieve Donard, and Slieve Commedagh 

 mountains, also sandy banks at Castlereagh, Shawsbridge, 

 and Sydenham; S.A.S. Near HiUtown ; C.H.W. 



Antrim— Cranmore ; Templeton. Malone ; IV. Thompson. Tor Head ; 

 Moore, op. eit. On red sandstone at Derriaghy, sandy banks 

 at Stranmillis, and grassy heaths at Black Mountain, Slieve- 

 true, and Sallagh Braes; S.A.S. 



Derry— Maghera, and frequent in the county ; D.M. Old quarry at 

 Castledawson ; S.A.S. 



Var. /3 LONGiSETUM Hampe. 



Dcrwn— Ditch bank in Victoria Park, and old quarry at Ballymaghan ; 

 S.A.S. Moume Mountains ; C.H.W. 



Antrim— Heathy and sandy bank on Slievetrue ; S.A.S. 



2. P. aloides Medivig. 



Dry, shady banks— common, especially in hiUy districts. Fr. Oct.— 

 March. 



Var. G> P. DiCKSONi Turmr. 



