59^ 
baker's north YORKSHIRE. 
may desire to have a ramble in the Emerald Isle to collect 
and study these beautiful gems of the vegetable kingdom. 
Report on Irish Hepaticae, published in the Proceedings 
of the Royal Irish Acadamy, by David Moore, Ph.D., F.L.S., 
&c., 1876, is also a good work of reference for the Hepaticae 
of Ireland. 
The " Hepaticae of the British Isles," by W. H. Pearson, 
1902, is the most complete work on these plants, with good 
figures of all the species then known. The author has 
followed the arrangement proposed by the late Dr. Spruce, 
to whom, he says in the preface of his work, I am indebted 
for the description of most of the genera. 
The following list of the North Yorkshire Hepaticae is 
arranged on the plan of Mr. Pearson's work, who has 
adopted the Conspectus of Dr. Spruce, of which I give an 
outline of the arrangement, with the list of North York- 
shire species following, so far as I have been able to see 
specimens. 
CONSPECTUS HEPATICARUM {Spmce). 
SUB-ORDER I.— JUNGERMANIACE/E. 
Genus I. Frullania, Raddi. 5 species. British. 
2. Jubula, Diim. I species. British. 
,, 3. Lejeunea, Lihcrl. 14 species. British. 
TRIBE I.— JUBULE.^. 
Genus i. 
TRIBE II.— JUNGERMANIE^. 
Sub-tribe I. — Radule/e. 
Radula, Dum. 7 species. 
Sub-tribe II. — Porelle^. 
Genus i. 
2. 
Pore 1 1 a, Dill. 5 species. 
Pleurozia, Diun. i species. 
