Moore — On Irish Hepatirce. 613 



-Tungermaniiia microscopica, Taylor, in Fl. Hib. 2, p. 59 ; Hook. 

 Journal of Botany, 4, p. 97, t. 20 ; Nees, Enrop. Leberm. 3, suppL, 

 p. 566, Lejeunea microscopica, Taylor, in G. L. et N. Synop. 

 Hepat., p. 345 ; Carrington, in Trans. Bot. Soc. Eclin. 7, p. 3, 

 p. 456; Cooke, Brit. Jung., p. 20, fig. 151; Dumort. Hepat. 

 Europ., p. 19. 



Hab. Parasitic on mosses, ferns, and dead stumps of trees. Croma- 

 glaun, Kerry, Dr. Taylor and Dr. Carrington. On Trichomanes 

 radicans. Purple Mountain, Killarney ; glen at Brandon Moun- 

 tain, &c. This very minute plant appears like a slight green 

 stain on the plants on which it grows, and is of frequent occur- 

 rence, though often overlooked. It has not, however, we be- 

 lieve, been observed hitherto out of the County of Kerry. To 

 the unaided eye it has no appearance of an organised plant, bnt 

 it is easily detected when placed under the microscope, and mois- 

 ture applied. The minute stems float and spread themselves and 

 so do the leaves. It is one of the most distinct species, and can- 

 not be mistaken or confounded with any of the others. 



6. Ze/etmea inconsjjicua (Mich., Eaddi), De Notaris. Antoecious. 



Stems very minute, hair-like. Leaves distant, ovate-rotundate, 

 entire, convex. Amphigastria none. Colesule axillary, turban- 

 shaped, pentagonal and plicate. 



Jungermannia inconspicua, Eaddi, in Att. Soc. Modena, 18, p. 34, t. 5, 

 fig. 2. Jungermannia minutissima, Taylor, in Trans. Bot. Soc. 

 Edin. Lejeunea Taylori, Spruce, in Trans. Bot. Edin. vol. 3, 

 p. 12. Lejeunea minutissima, G. L. et i^. Synop. Hep. p. 387; 

 Dumort. Hepat. Europ., p. 18. 



Hab. On stems of heath and furze, also on trunks of trees. Near 

 Kenmare, Dr. Taylor; and other parts throughout the counties of 

 Kerry and Cork. jSTot very rare, but chiefly confined to the south- 

 em counties. This minute plant, which can only be well dis- 

 tinguished from Lejeunea minutissima. Smith, by wanting am- 

 phigastria, was mixed up with that species, until Dr. Taylor 

 published characters for each, and separated them. Dr. Spruce 

 has, however, shown that Dr. Taylor was in error, in supposing 

 the exstipulaceous plant to be Smith's plant. See foot-note in 

 Trans. Bot. Soc. Edin. vol. iii.,, p. 212. 



7. Lejeunea minutissima (Smith), Dumortier. Dioecious. Stem creep- 



ing, capilliform. Leaves indistinctly 2-lobed, lower lobe 

 minute, rather distantly placed on the stem, ovate-obtuse. Am- 

 phigastria bifid. Colesule lateral, obovate-rotundate, pentago- 

 nal and contracted at the mouth. 



Jungermannia minutissima. Smith, Engl. Bot. t. 1633 ; Hook., Brit. 

 Junger. t. 52. Jungermannia ulicina, Taylor, in Trans. Bot. Soc, 

 Edin. 1, p. 115, Lejeunea minutissima, Dumort. Syll. Jung. p. 33, 



