420 baker's north YORKSHIRE. 
I. Porella pinnis obtusis. The blunt finned Porella.. 
This is 7107V included amongst the Hepatica\ [Dill. His. 
Muse., page 4^g, Tab. y8). 
Genus 16. Selaginoides. — i species. 
Selag-inoides foliis spinosis. The prickl\- Selaginoides. 
Seedling Mountain Moss. [Dill. His. Muse., page 460,. 
Tab. 68). 
This is now the Selaginella selaginoides Gray. The only 
British species. 
Genus 17. Lycopodioides.— 12 species. 
These are now classed as Selaginella. The genus is an. 
exotic one, and many beautiful species have been introduced 
from tropical countries, and are now much cultivated as 
ornamental plants in hothouses. [Dill. His. Muse., page 
462, Tab. 64 to 68). 
Genus 18. Anthoceros. — 5 species. 
I. Anthoceros foliis minoribus, magis laciniatis. The 
common smaller and more divided Anthoceros = Anthoceros 
punctatus L. [Dill. His. Muse., page 4j6, Tab. 6S). 
Genus 19. Lichenastrum. — 50 species. 
I. Lichenastrum Alpinum purpureum, foliis auritis et 
cochleariformibus. The purple spoon-lea\ ed Alpine Lichen- 
astrum. (Dill. His. Muse., page 4'/g, Tab. 69 to 7^). 
The genus Lichenastrum represents what is now known as- 
the Scale Mosses or Hepaticae, of which upwards of 200 kinds, 
are now named and described, found iu the British Islands. 
Genus 20. Lichen. — 19 species. 
This group includes the genera Marchantia, Targionia, 
Sphaerocarpus and Riccia : — 
I. Lichen vulgaris major pileatus et verrucosus. The 
common Mushroom-headed Liverwort = Fegatella conica. 
Tab. 75. 
6. Lichen fontanus major, stellatus aeque ac umbellatus, 
et cyathopliorus = Marchantia polymorpha. Tub. 77. [Dill.. 
His. Muse., page 5/5, Tab. 75 to 78). 
