HEPATIC^. 
605 
TRIBE 11.— JUNGERMANIE^. 
Sub-tribe I. — Radule.e. 
Radula, Dum. (Junger?nania, Hook.) 
I. Radula complanata. (L.) Dum. 
On trunks of trees not uncommon. 
In Gilla Leys wood and other Castle Howard woods 
(Spruce 1839). 
In the Central Vale on trees, also on trees in the 
western dales, and in shady woods among^st the Eastern 
hills (M.B.S.). 
Near Thirsk and at Ayton in Cleveland (Baker). 
On trees in the neig"hbourhood of Whitby (Anderson). 
Arncliff wood, Eskdale, and Whitfield Gill, near Bowes 
(Ing-ham). 
Fruiting Spring and Summer. 
Sub-tribe II. — Porelle^. 
Porella Dill, (Madotheca, Dum.) 
{Jungerma nia^ Hook.) 
1. Porella IcBvigata (Schrad.) Lindb. 
(Madotheca Icevigata^ Dum.) 
On rocks in hilly districts, rare. 
Mowthorpe Dale, Castle Howard (H. Ibbotson and G. 
Stabler). 
Blea Beck, Teesdale (Baker). 
Ingleby, Cleveland (Mudd). 
Very rarely fruiting. 
2. Porella platyphylla. (L.) Lindb. 
{^Madotheca platyphylla, Dum.) 
On walls, rocks and sometimes on trunks of trees not 
uncommon in the hilly districts. 
January, 1906. 
