THE CRYPTOGAMIC FLORA OF KENT. 375 



On the Bear's Oak at Penshurst, Kent ; Mr. Thompson. 

 height. L. Fl. On old oaks in Cobham Park ; very fine 

 and abundant. 

 Easily recognised by its chalky white thallus, unbranched, 

 pruinose lirellas, and 7-septate spores. 



0. viRiDis, Pers. 



On old trees (rare ; Leight. L. Fl.) Common in Kent. Leight. 



Br. Graph., t. 6, f. 14. 

 Trees near Grofton Park Farm, Orpington ; Eynsford ; Otford ; 

 Brastead ; Barming ; near Cossington Spring, Maidstone. 

 Frequent on the thin, easily-separating bark of yew trees. 

 The var. saxicola, Leight., I have not observed in Kent. 

 This sj)ecies is easily known by its acicular 13-septate spores. 

 [0. prosodea, Ach., should be looked for on very old oaks, since 

 it has been found in Sm-rey. 0. vulgata is probably not 

 uncommon, but has been overlooked.] 



Stigmatidium crassum, Dub. Petusaria crassa (Jenner Fl. Tunbr.) 

 On old trees ; common, but rarely well-developed in Kent. 



E. B. 1752. 

 Wrotham ; Chislehurst ; Ightham ; Thornden Wood ; Moldash ; 



Sevenoaks. On trees on Tunbridge Wells Common ; 



Hungershall Rocks ; Jenner Fl. Tunbr. 



Arthonia astroldea, Ach. Ojjegrapha (Forster Fl. Tunbr.) 

 On trees. E. B. 1847. 

 Remarkably fine on some young birch trees in the wood behind 



the Sussex Tavern; Forster Fl. Timbr. On ash trees, 



Ightham ;^Ohkubo ! 



A. ciNNABARiNA (Wallv.) SpUoma tumidulum (Forster Fl. Tunbr.) 

 On old trees, &c. E. B. 2151. 



In the little wood behind the Sussex Tavern at Tunbridge 

 ; Wells \tForster Fl. Tunhr. 

 Y&v. anerythrcea, Nyl. Thornden Wood, near Canterbury. 



A. PRUiNOSA, Ach. 



On old trees ; not common. E. B. Supplt. 2692, f. 1. 



Lullingstone Park ; Cobham Park. 

 Known by its immersed i^ruinose apothecia, and cracked, rough, 

 or wrinkled thallus. 



A. PROXIMELLA, Nyl. 



I I On oak trees. Grevillea, vol. i., pi. iv., f. 3. 

 Woolwich Wood, near Sibertswold. 



NoRMANDiNA L^TEviRENS, Tuvn. S Borr. 



On damp sandstone rocks ; very rare in Kent. 



Hungershall Rocks. 



\N pulchella (Borr.) should be looked for on Jungermannia 

 dilatata in woods near Dover and Hythe, and Endocarpon 

 hepaticum, Ach., on calcareous walls, and E. mmiatum on 

 greensand rocks.] 



