the Dillenia?i Herbarium. 109 
two specimens, both long and narrow pieces, the one of U. lac- 
tuca, the other of U. umbilicalis. 
7. U. intestinalis in many different stages. 
8. Several specimens of U. compressa, unbranched, varying in 
thickness : these do not agree with the figure. 
9. Fucus opuntia. Linn. Trans. 
10. U. incrassata. Fl. Ang. — Dr. Roth has quoted this to his 
Rividaria Comu damce, but it belongs to his Jl. endivifolia. 
11. It would be difficult to determine what Dillenius really in- 
tended by this number: there are three specimens; one, Conferva 
gelatinosa /3. ; a second, called " green" C. confragosa ; and a third 
marked " var." Viva plumosa. 
12. U. crispa. Fl. Scot. 
13. I have no means of ascertaining how far this is the U. cor- 
nuta of Lightfoot; but I am almost certain it is no Ulva, but 
either a Tremella, or, what I rather incline to think, a Clavaria. 
It does not bear the slightest resemblance to J ungermannia pin- 
guts, of which Hudson suspected it might be a variety. 
The four remaining species enumerated by Dillenius undoubt- 
edly belong to the genus Tremella ; and I, therefore, from a con- 
sciousness of my ignorance in that tribe, decline offering an opi- 
nion upon them. 
USNEiE. 
No. 10. Lichen chalybeiformis. Linn.— It does not appear to 
differ in any respect from No. 7-, which is L.jubatus. 
16. Under this number is presened only the narrow orange- 
coloured Lichen vulpmus, which grows in England. That which 
is known under this name in Germany, and which has lately been 
found by my valuable correspondent Dr. Hugge, with fine dark 
shields, 
