24 Ihe Irish Naturalist. [Februarj', 



Holt, and in Yorkshire, by the late Dr. Carrington, who also 

 succeeded in finding it in Muckross demesne, Killarney ; it 

 was found near Dublin by Dr. Taylor, in 1830, but has not been 

 rediscovered in the last two stations. 



FruIIania tamarlsci, Liuu., Duiiiort. — Common ou trees aud on 

 rocks— D. M'A., 1893 ; Lett aud M'A., 1899. 

 var. atrovircns, Carrington. — Stems elongated, leaves elliptic-ovate, 

 apiciilate, inflexed, indigo green colour. On wet rocks, margin of 

 the lake— Lett aud M'A., 1899. Rare. 



FruIIania gcrmana, Taylor.— On the trunks of trees— D. M'A., 



1893 ; Lett and M'A., 1899. 

 FruIIania microphylla, Gottsche, Pearson. — On the smooth bark 



of trees -Lett aud M'A., 1899. 

 FruIIania frag^llifolla, Taylor. — On trees— Lett and M'A., 1899. 



Rare. 

 FruIIania diiatata, Linn., Dumort. — On trees— D. M'A., 1893; Lett 



and M'A., 1899. 

 Lejeunea IVIackai, Hook. — Plentiful ou the bare rocks aud on stones 



by the lake margin, where it becomes dark-coloured, nearly black — 



D. M'A., 1893; Lett aud M'A., 1899. 

 Lejeunea ovata, Taylor. — On the trunks of trees, among Metzgeria 

 furcata and Porotrichiun alopeairiim — D. M'A., 1893; Lett and M'A., 



1899. 

 Lejeunea serpyllifolia, Dicks. — On damp stones near the lake and 



among mosses ou trees aud on damp banks — D. M'A., 1893; Lett 



and M'A., 1899. Common, 

 var. heterophylla, Carrington. — Very fragile; branches at- 

 tenuated, microphyllous. Leaves plane, distant, variously shaped, 



lobule obsolete or not. Ou a wet, peaty bank— Lett and M'A., 



T899. 

 Lejeunea flava, Swartz. — Ou the trunks of trees among Metzgeria 



fitnafa-T). M'A , 1893; Lett aud M'A., 1899. (Rare.) 

 Lejeunea patens, Lindberg.- On decayed wood-D. M'A., 1893; 



Lett and M'A., 1899. 

 var. erecta, M'Ardle. /. ^Vrt/., 1894, p. 139. Very rare. 



Lejeunea hamatlfolla, Hook.— On the trunks of trees— D. M'A., 

 1893. On Fntllania taviarisci—h^\X and M'A., 1899. 



Lejeunea Rossettiana, Massal. (Plate I.) Pearson m Journal Bot., 

 vol.27, p. 352, tab. 292, 1889. Hep. Brit. Isles, p. 60, plate 17. Massa- 

 longo, Niiovo Gioni. Bot. Ital., vol. 21, p. 487, 1899. Very rare- 

 Mr. R. W. Scully. 1889. On the decayed stems of Erica and ou damp 

 peat— Lett aud M'A., May, 1899. 

 Plant minute, intricately csespitose, very fragile, of a yellowish green 



colour. Stems sub-pinnate, with fasciculate or simple pale rootlets. 



Leaves imbricate, patent, more distant ou young branches, bi-lobed, 



antical lobe convex, ovate, apex acuminate incurved, upper surface 



