NOTES ON THE FLORA OF FLINTSHIRE 153 



Wall near Nannerch Station, W. 4 D.—P. physodes Ach. form 

 labrosa Ach. Frequent. — P. exasperata Nyl. Near Clan-yr-afon, 

 W. d D. — P.fuliginosa Nyl. var. (3 latevirens Nyl. Near Coed Du, 

 Ehydymwyn, W. d D. 



Solorina saccata Ach. On limestone rock in the Leet, 1904. 

 Peltigera canina Hoffm. — P. rnfescens Hoffm. Ehydymwyn, on 

 limestone, W. d D. ; Cymmau ; Glol. — Physcia parietina De Not. 

 Frequent. — P. stellar is Nyl. var. fi leptalea Nyl. On a stone gate- 

 post near Lixwm, altitude 650 ft., W. d D.—P. tenella Nyl. Fre- 

 quent. — P annular ia nigra Nyl. Frequent. 



Lecanora sympagea Nyl. Wall near Nannerch Station, W. d D. 



L. vitellina Ach. Nannerch, W. d D. ; Caerwys ; Ehydymwyn ; 



Cilcain. — L. citrina Ach. Common. — L. aurantiaca Nyl. Nannerch, 



W. d D. — L. galactina Ach., W. d D. — L. allophana Nyl. On 

 birch-trunks skirting Llyn Helyg ; on tree-trunks by the Alyn 

 below Coed Du, W. d D. — L. sulphurea Nyl. Cilcain, W. d D. 

 L. varia Ach. Frequent. — L. conizcea Nyl. On a gate near Cilcain, 

 W. d D. — L. sarcopis Ach. With the last, W. d D. — L. parella 



Ach. Common. — L. parella Ach. var. /? Turneri Nyl. On a syca- 

 more-trunk near Coed Du, Ehydymwyn, barren, W. d D. — L. 

 calcarea Somm. Plentiful on the limestone. — L. calcarea Somm. 

 var. y Hoffmanni Somm. Wall near Nant Alyn, near Ehydymwyn, 

 W. d D. — L. muromm Ach. Limestone scars in the Leet ; 



Nannerch. 



Pertusaria amara Nyl. On alders near the Alyn, south-west of 

 Ehydymwyn, W. d D.; on tree-trunks near Llyn Helyg ; Maes 

 Mynan, on ash. — P. communis DC. Common. — P. leioplaca Schaer. 

 Near Nannerch, W. d D. — Vrceolaria scruposa Acb. On limestone 

 rocks above Nant Alyn, Ehydymwyn, W. d D. ; on a tombstone in 

 Ehuddlan Churchyard. — Verracaria nigrescens Pers. Nannerch ; 

 Halkin ; Ehydymwyn ; Glol. — V. glaucina Ach. On limestone 

 near Clan-yr-afon, W. d D. — V. calciseda DC. On limestone rocks 

 above Nant Alyn, Ehydymwyn, W. d D. 



Opegrapha atra Pers. On ash-trunks, Nannerch ; Cilcain ; 

 Mostyn. — Arthonia Sivartziana Ach. On an ash-trunk in the wood 



south-west of Ehydymwyn, IF. d D. 



Lecidea lucida Ach. On rock near Celyn Maly, north-west of 

 Cilcain, W. d D. — L. decolorans Flk. With the last, W. d D. 

 L. contigua Fr. Frequent ; stony shore of Llyn Helyg ; Nannerch. 



L. rivulosa Ach. Summit of Moel Arthur; on rocks north-west 

 of Cilcain.— L. calcivora Ehrh. Frequent on the limestone rocks; 

 Nannerch ; the Leet ; Coed-yr-Esgob ; Maes Mynan. — L. canescens 

 Dicks. Cilcain ; Nannerch, W. d D. — L. myriocarpa DC. Not 

 uncommon. — L. grossa Pers. On tree-trunks near Cilcain, W. d D. 



L. caruleonigricam Lightf. Limestone scars in the Leet, 1904. 



L. geographica L. forma atrovirens L. Judging from the distri- 

 bution in Flintshire, this species would seem to be calciphobous. 

 Moel Famma, Moel Arthur, and elsewhere along the Silurian 

 range. At Glol (limestone), but growing on a travelled Silurian 

 boulder, W. d D. 



