CLADCXNTA. 253 



On the earth, and on rocks, in alpine and arctic regions. 

 Greenland, Floerke Clad. 1828. Labrador, Wenck, etc. New- 

 foundland, Despreaux. British Columbia, Macoun. Marin 



county, California, Bolander. ft (C. Hookeri, Tuck. Syn. N. E. 



1848) Newfoundland, Herb. Hook. A rock-lichen of the White 



Mountains, of the present series, with densely squamulose pode- 

 tia, is, for the most part, scarcely distinguishable from the species 

 last preceding ; but notwithstanding offers now no differences at 

 all from small forms of the present. 



26. C. deformis (L.) Hofifm. ; thallus squamulose, the squa- 

 mules sparse and small, but at length more ample, rounded, and 

 lobed; podetia elongated-cylindrical more or less ventricose ; 

 incrassated j simple becoming somewhat branched ; menibrana- 

 ceous-corticate ; ashy-greenish and smooth below, above finally 

 sulphureous-powdery ; cup's cupulaeform, and the erect, now pro- 

 liferous margin crenate-deutate, but at length dilated and very 



irregularly torn-lobed ; apothecia scarlet. Fr. L. E. p. 239. 



Tucker m. Licit, exs. n. 38. Nyl. Syn. p. 222. 



On the earth in our highest New England mountains, and 

 northward. Canada, Michaux Fl. 1803 ; Agassiz. Newfound- 

 land, Despreaux. White Mountains, Tuckerman. Coast of 

 Massachusetts, rare, Oakes. Rocky Mountains, alpine, Hall 



British Columbia, Herb. Hook. ; Macoun. An ochrocarpious 



form occurs commonly in Sweden (Fr.) but has not been seen 

 here. 



27. C. digitata (L.) Hoffm. ; thallus squamulose, the squa- 

 mules becoming ample, round-lobed, and crenate ; podetia cylin- 

 drical ; membranaceous-corticate ; smooth and yellowish-green 

 below, finely white-powdery above ; cups narrowed, with an in- 

 curved, entire margin, but at length dilated, and irregularly pro- 

 liferous-palmate ; apothecia scarlet. Fr. L. E. p. 240. Tuck- 



erm. Lick. exs. n. 39. Nyl. Syn. p. 222. 



On rotten wood, and on the earth, in the highest New Eng- 

 land mountains, Tuckerman Syn. N. E. 1848. Canada, A. T. 

 Drummond. Greenland, J. Vahl. Very rarely also on the coast 

 of Massachusetts, Oakes. Ochrocarpious states unknown here. 



28. C. -wacetoto(Ehrh.) Hoffm. ; thallus squamulose, minute, 

 sparse, the squamules crenate-lobate j podetia cylindrical; slen- 

 der; membranaceous-corticate; from simple at length irregu- 



