80 The Rev. Hucu Davızs’s Remarks on Lichen scaber 
Not a little confusion has prevailed with regard to this plant : 
Linnzus refers to it, and it only, for his Lichen lanatus ; Light- 
foot does the same; nor does Hudson refer to any other figure. 
But Iam convinced that it is neither Linnzus’s nor Hudson's 
plant: the word * decumbens" in the definition by each author, 
and * ramulis brevissimis divaricatis" in that of Hudson, seem 
to confirm my notion, and to point out f. 32. of t. xvii. of Dille- 
nius, which is the lanatus of English Botany, 846. Hudson's ob- 
servation on his L. pubescens, viz. “ affinis precedenti (lanato sc.) 
sed minor," confirms me still more strongly in my opinion that 
f. 8. t xiii. is not Hudson's lanatus, as f. 9. t. xiii. which Lin- 
neus refers to for his pubescens, and whom Hudson quotes, has 
evidently no affinity to f. 8. t. xiii. But let me observe that 
without doubt this latter is Lightfoot's L. lanatus, although he 
gives us the same definition as Linnzus does. The latter part of 
Lightfoot's description of itis, I believe, his own, and very ac- 
curate ; it runs thus, * many short fine capillary fibres, like spi- 
nules, grow horizontally out of the sides of the filaments." Fl. 
Scot. v. 2. p. 893. This is truly characteristic of Brewer's plant. 
Professor Acharius, Lich. Suec. Prodr. and after him Dr. Smith 
in Eng. Bot. likewise unfortunately quote it for their L. lanatus, 
in conjunction with f. 9. ¢. xiii. and f. 32. t. xvii. whereas the 
two last, as we presently shall see, are perfectly distinct from 
the former. The learned authors, now mentioned, moreover in- 
troduce the L. scaber of Hudson, i. e. the exilis of Lightfoot, as. 
the same species, which I sball also prove to be very different from. 
the other three, viz. from f. 8. and f. 9. t. xiii. and f. 32. t. xvii. 
Now my readers, who have at all attended to these subjects, 
will perhaps not expect to be told that Mr. Brewer's plant, above 
quoted, viz. f. 8. t. xiii. Dill. is the very identical L. bicolor of 
the present day. Notwithstanding I was fully confident of my 
correctness 
