358 HEPATIC^ OF LOUGHBRAY, CO. WICKLOW. 



Dr. Spruce says the true plant has very small leaves, minute cells, 

 and for its size enormously long slender perianths. 



In the following list, which is provisional only, I have enumerated 

 67 species, forming a large percentage of the whole 146 species 

 known to inhabit Ireland, all collected within the distance of two 

 miles. Six of these are new to the county of Wicklow ; they are 

 Frullania fragilifolia, Mylius anomalies, Jungermania (Lophozia) 

 exsecta, J. intermedia, J. incisa, and J. porphyroleuca. 'Loughbray 

 is a new locality for the following four : — Cephalozia curvifolia, 

 Kantia arguta, J. (Aplozia) crenulata, and Jungermania nana. 



Marchantia pohjmorpha L. Plentiful on moist banks (seldom 

 found fertile). 



Conocephalus cornicus Neck. Abundant in damp shaded places, 

 on the banks of streams forming large masses, fruiting in spring. 



Frullania dilatata Dumort. Plentiful on the trunks of trees and 

 on wet rocks. — F. fragilifolia Tayl. On the trunks of Alder, and 

 also firmly attached to the wet rocks, and amongst Plagioihedum 

 elegans, D. McA., July, 1887. Leaves of a dull purple colour, very 

 convex, and from their narrow insertion readily detached on 

 pressure; auricles oblong, helmet like ; under leaves (stipules) 

 ovate and bifid at the apex ; margin plane. — F. Tamarind Dumort. 

 Plentiful on the smooth bark of trees, spreading in large patches. — 

 Var. robusta (<? ster.), S. 0. Lindberg, 1873. — F. germana Tayl. 

 On moist rocks and on the trunks of moss-covered trees ; plentiful. 

 Often passed over for the preceding, from which it differs in its 

 large size, light brown colour, involucral bracts entire, leaves 

 wanting the line of moniliform cells, which are so obvious across 

 the leaves of F. tamarisci. 



Radula complanata Dumort. On trunks of trees and rocks ; 

 common. 



Porella laevigata Lindb. Plentiful and very fine on wet rocks. — 

 P. Thuja Tayl. On rocks and stones. — 



Pleurozia cochleariformis Dumort. Plentiful in damp boggy 

 places amongst the heather. 



Lepidozia reptans Dumortier, Hook. Plentiful in damp shady 

 places. — L. cupressina Dumort. 



IJazzttnia trilobata B. Gray. In rocky places ; not in such 

 abundance as it is found in the South and West of Ireland. A 

 well-marked plant, easily known by the large quadrate under leaves, 

 which are wider than the stem. 



Cephaluzia Sphagni Spruce. Plentiful amongst Sphagnums 

 and other mosses in damp places. — C. elachista Lindb. On damp 

 banks ; rare. Dr. Lindberg, 1873 ; D. McA., 1887-88.— ( '. bicuspi- 

 data Dumort. On shady banks; common. — Var. uliginosa Nees, 

 Eur. Leberm. ii. 253 ; Jungermannia Lamersiana Hiibn. Hep. Germ. 

 165; J. bicuspidata E. Bot. t. 2239. Swampy places amongst 

 Sphagnums, margins of streams, and amongst the fronds of Pellia. 

 Dr. Spruce states that this can hardly be considered more than the 

 dioecious and perfect form of C. bicuspidata. Whether species, sub- 

 species, or variety, it is most easily to distinguish from C. bicuspi- 



