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APPENDIX C.—HERBARIUM BRITANNICUM. I5I 
- Polypodium dryopteris, Bolt., /7/. 52, ¢. 28; Eng. Bot., t. 616. 
Found in shady places, and on mountains not unfrequent. 
My specimens are from the Den of Dupplin, Perthshire. 
[Phegopteris Dryopteris, Fée.—G. C. D.] 
- Phascum piliferum, Schreb., Phasc., p. 8, t. 1., ff. 6-10! 
Found on dry grassy banks. On the hills of Turrin and 
Finhaven near Forfar ; Blackford Hill, and King’s Park near 
Edinburgh, from whence these specimens were taken. 
. Splachnum tenue, Dicks., Cryft., fasc. 2, p. 2, t. 4, f. 2. 
Sp. purpureum, Hull ? 
Sp. purpureum, With., Arrang., p. 794, t. 18, f. 9. 
Also Sf. tenue of both these authors. 
Found on the mountains of Cairngorm and Loch-na-Gare, 
always on cow-dung. 
| Tayloria tenuis, Schimp.—-G. C. D.] 
. Grimmia nuda, Dicks., Cryt., fasc. 4, p. 7, t. 10, f. 15. 
Bryum nudum of Dickson. 
I observed this plant in the month of March 1795, on clay 
banks by the side of the river Tay near Perth, producing its 
capsules from October to April or May. 
[Discehum nudum, Brid.—G. C. D.] 
. Orthotrichum aristatum, Dicks. 
O. diaphanum, Dicks., Crypt., fasc. 4, p. 5, t. 20, f. 12. 
Found on trees in the Botanic Gardens, Edinburgh, and on 
apple trees in a garden at Hope Park near Edinburgh; at 
Dalguise, five miles from Dunkeld, Perthshire. 
[O. diaphanum, Schrad.—G. C. D.] 
. Polytrichum subrotundum, Hedw., Sp. Musc., p. 97, ¢. 21, 
i. 7-9; Dill., Hist. Musc., p. 428; t. 55, f. 6 A-F. 
P. pumilum, Swartz. 
Found on heaths and sandy places not unfrequent. These 
specimens from Ben Lawers, Perthshire. 
[P. nanum, Neck.—G. C. D.] 
Lichen atrorufus, Exg. Bot., ¢. rro2. 
I have to acknowledge my obligation to the Rev. Mr. 
Harriman, for a number of excellent specimens of this lichen 
from Durham and Cumberland. I have observed it on heaths 
