222 THE FLORA OF HALIFAX. 



Parmelia perlata, (L.) Ach. (L. perlatus, Huds. I., p. 448). 

 1775. /. Bolton, Cat. No. 346. 

 High Greenwood, Heptonstall — Herb. Leyl. 



Parmelia fuliginosa, (Dub.) (Lichen olivaceus, Huds. I., p. 446). 



1775. J. Bolton, Cat. No. 339. 



' Dillenius xxiv., 77, includes three plants, P. olivaceus, P. 

 fuliginosus, and P. subaurifera. Bolton, No. 339 doubtless 

 included several things, but not P. olivacea vera and all the 

 forms of P. fuliginosa would be most abundant ' — (J. A.M.) 



Parmelia conspersa, Ach. (L. centrifugus, Huds. I., p. 445). 

 1775. J. Bolton, Cat. No. 336. 

 Rocks in Harley Wood, and at Cross Stone, near the 



Church — Herb. Leyl. 

 1888. Near Cross Stone Church — T. Stansfield, Lees' Fl. 



Parmelia saxatilis,(L.) Ach. (Lichen saxatilis, Huds. I., p. 446). 



1775. J. Bolton, Cat. No. 337. Frequent — Herb. Leyl. 



1877. North Dean Wood— Dr. Parsons, l Nat: III., 48. 



1888. Crimsworth Dean. 1892, Pecket Wood and many 

 other places. Very common on the masses of grit rock 

 which lie about in the woods to the west of Halifax — ./. N. ! 



Var. omphalodes, (L.) (L. omphalodes, Huds. I., p. 446.) 

 1775. /. Bolton, Cat. No. 338. [Herb. Leyl. 



1838. Knotts Wood, near Todmorden — /. No-well. 

 1888. Todmorden — T. Stansfield, Lees Fl. 



Parmelia laevigata, (Sm.) Ach. 



Knotts Wood, near Todmorden — /. Nowell, Herb. Leyl. 



Physcia flavicans, (Swartz.) (L. vulpinus, Huds. I., p. 462). 



1775. /. Bolton, Cat. No. 396. 

 ' " Dill, xiii., 16, quoted by Hudson, and specimens in Herb. 

 With, are both P. flavicans, save that the latter contains a 

 non-British specimen of true Chlorea vulpina, Lichen 

 vulpinus, Linn., is not a British plant : the Swedish botanist 

 mistook the figure of Dillenius for it, and so Hudson was 

 led astray. Physcia flavicans is a South English species, 

 but, as Mudd vouches for the correct determination of a 

 plant gathered at Settle by Dr. Windsor, there is a possi- 

 bility that Bolton may have found it in small quantity 

 within the parish of Halifax ' — (J '.A .M.) 



