442 KEY. J. M. CROMBIK ON LICHENS 



u Species bene distincta, et fere urceolariiformis, inter species stirpis Le- 

 cidece plana. Thallus K flavens (I demum nonnihil subroseo tinctus, 

 haec reactio vero passim obsoleta). Variat thallus crassior (crassit. 

 0*5 milliui.) et pluribus apotheciis in quavis areola (areolis circum- 

 circa lateribus nigris), apotheciis impressiusculis." — Nyl. in Hit. 



On rocks ; probably not uncommon. Coll. Half. no. 2281. 



Lecidea disciformis (Fr.) 9 Nyl. 



On the bark of trees ; rather sparingly gathered. Coll. Balf. no. 2331. 



L. TRIPHRAGMIA, Nyl. 



On the bark of trees ; probably not unfrequcnt. Coll Balf. no. 2368. 



L. spuria (Schcer.). 



On rocks; apparently not uncommon. Coll. Balf. no. 2351. 



L. iMMUTAxa, Nyl., sp. n. "Thallus ochraceo-rosellus (verisimihter 

 autem typice albidus), areolato-diffractus (crassit. circiter 0*2 millim*)* 

 determinatus(K+,flavens); apothecia nigra, superficialia, plana, obtuse 

 marginata (latit. 0*5-09 millim.), intus concoloria; spora 8nae, 

 fuscae, ellipsoidese, 1 -septate, longit. 0*0 16-0*023 millim., crassit. 

 O'008-O'OIO millim., leviter superficie granuloso-inicquales; paraphy- 

 ses gracilescentes (noil bene discrete) ; epithecium et hypothecium 

 luteo-fuscescentia (aut hoc magis infuscatum). Iodo gelatina hynie- 

 nialis intensive cacrulescens. 



" Species bene distincta in stirpe I*ecide(E spuria. Thallus I — . Sper- 

 matia brcviter bacillaria, longit. 0*004 millim. , crassit. 0*0006 millim. 

 Nyl. in litt. 



On rocks; very sparingly gathered. Coll. Balf. no. 2221. 



* 



L. continens, Nyl., sp. n. 



" Thallus lacteus vel sublutescenti-albidus, sat tenuis, continuus, super- 

 ficie areolato-rimulosus (K flavens, medulla I caeruleo-obscurata) ; 

 apothecia nigra, plana, marginata (latit. 0'5-0'fi millim.), margins 

 fuscescente, intus obscura ; sporce 8nse, fuscse, ellipsoideae, 1-septataN 

 longit. 0-011-0014 millim., crassit. 0006-0007 millim.; paraphyses 

 fere mediocres ; epithecium et hypothecium fuscescentia. Iodo gela- 

 tina hymenialis intensive cserulescens. 



"Ad Lecideam spuriam quodammodo accedens et reactionibus conveniens, 

 at thallus alius. Variat perithccium fusco-pallescens. Spermogonia 



non visa. 





On rocks ; very sparingly gathered. Coll. Balf. no. 2343. 



\j. configurans, Nyl. 9 sp. n. 



••Thallus lutescenti-glauco-albidus, laevis (crassit. 0*5 millim. ve 



el 



tenuior), subrimulosus, determinatus ; apothecia fusco-nigra 

 fusca, innata, plana (latit. 03-05 millim.), immarginata, circuroscissa, 

 intus albido-incoloria, demum 2-6 submoniliformi-contiuentia (tuw 

 quasi lomentaceo-linearia et varie flexuosa) ; sporae Suae, u\co o 



