592 Proceedings of the Royal Irish Academy. 



Dr. Taylor has giyen to the world tlie results of his researches 

 among this interesting family of plants, in the second part of 

 Mackay's " Plora Hibernica," where he describes, nnder the genus 

 Jun<^ermannia, all the species which were known to him up to 1836. 

 Of the foliaceous kinds seTenty-five species are enumerated, besides 

 the Marchantiacese and Anthocerotacese, comprising eight species, 

 eio-hty-three in all. Among them are several contributions of rare 

 species by the late W. Wilson of Warrington, of bryological fame, 

 who collected them in 1829, when he paid a long visit to this country, 

 and who was the first to publish and describe in the English Flora the 

 rare Dumortiera ii'rigua, under the name of Marchantia ii'rigua. After 

 the publication of the "Flora Hibernica," Dr. Taylor discovered several 

 new species, descriptions of which he published in the Transactions of 

 the Eotanical Society of Edinburgh, vols. 1-3. In 1843 a list of the 

 HepaticEe of the County of Cork was included in the Flora and Fauna of 

 that county, which was published by the Cuvierian Society of Cork. 

 About fifty species are therein enumerated. From that period up to 

 1862 little has been published on Irish Hepaticte, except some brief 

 notes of additional species and new localities by myself in the Pro- 

 ceedino-s of the Dublin University Botanical and Zoological Association, 

 and of the Dublin iSTatural History Society. Isaac Carroll of Cork 

 made also a few additions about this time. 



In 1861 Dr. Carrington of Eccles, Lancashire, spent eleven weeks 

 ill Ireland, chiefly in the County of Keny, studying and collecting 

 Hepaticee. In 1863 he published the result of his labours in the 

 Transactions of the Botanical Society of Edinbui'gh, vol. 7, part m., 

 under the heading, " Gleanings among the Irish Ciyptogams." In 

 this important contribution the names of the genera, and sections iato 

 which the large genus Jungermannia had been about that time sub- 

 divided, are adopted. He does not describe any new species, but he 

 added to our flora one species, which had not previously been noticed 

 in Ireland, namely, Jungermannia obovata, JSTees. Including those 

 which he found himself, and those which he gleaned fi'om other sources, 

 Dr. Carriagton raised the list of Dish Hepaticse to about 100 species, 

 ^ith numerous varieties. Another very important contribution has re- 

 cently been published by Dr. Liadberg, Professor of Botany ia the 

 University of Helsingfors. At my invitation he paid a visit to Ireland 

 in June and July, 1873, and was my guest while he remained in this 

 country. I accompanied him to those parts of Ireland which I knew 

 to be the richest ia this particular family of plants, of which we made 

 large collections. During the month of July 1 873, no fewer than eighty- 

 seven species of Hepaticge were collected, an account of which Dr. Lind- 

 bergpublished in the Acta SocietatisScientiarumFennicae, vol. X.," under 

 theheading, " Hepaticse in Hibernia mense Julii 1873 lectae." Among 

 them he describes several species new to science, viz., Lejeunia patens, 

 L. lloorei and lletzgeria conjugata. He also adds to the list Piceia 

 sorocarpa, Bisch., and Scalia Hookeri (LyeU), Gray, besides raising to 

 the rank of species a few which had previously been held as varieties. 



