302 CoRNICULARI^» 



sis flexuoso-complicatis spinoso - denticula- 

 tis crispis. 



Lichen odontellus Lich. Pr. p. Q13. Lich. 



islandicus tenuissimus Ehrh. Beytr. 5. 



p. 35. Lich. island. nigricans Retz. 



Pr. q. p. q8i. 

 Icon. Dill. T. 17. f. 31. A. 

 Habitat in collibus sterilibus saxosis. 



3. CORNICULARIA muricata: thallo cartilagineo fru- 



ticuloso-caespitoso ere£lo glabro nigro, ramis 

 brevibus teretibus rigidis flexuosis aculeatis 

 furcatis; orbillis ciliato-radiatis demum con- 

 vexis amplis inasqualibus nigro-fuscis. 

 Lichen muricatus Lich. Pr. p. 214. N. Aft. 



Ac. Sc. Stockh. V. qq. p. 344. Lich. a- 



culeatus Swartz N. A£t. Ups, V. 4. p. Q48* 



(excl. synon.) 

 Icon. Tab. nostra 6. f. Q. N. Acl. Stockh. 1. c. 



T. 4- f- 5- 



Habitat in montibus siccis apricis. SwARTZ. 

 Obs. Caespitem efformat vix pollicem alturn clen- 

 sum fastigiatum basi fuscescentem ramosissimum , 

 ramis brevibus fragilissimis vagis solidiusculis te- 

 retibus aculeatis, axillis vix compressis, apice bi- 

 furcato-spinulosis. Thallus ad basin aliquando rwa- 

 gis compressus 8C colore castaneo tin&us occurrit. 

 In hoc statu propinquitatern cum Cornicularia acu- 

 leata prodit. Orbillae in ramulis terminales rario- 

 xes, in infantia planiusculas rufescentes marginc 

 ciliarae, per aetatem dilatatae amplae inasquales sub- 

 lobatae, margine inermi s. nudo obtuso reflexo. 

 Inter Corniculariam spadiceam 8C C. aculeatam me- 

 dia. Differt vero colore, ramis teretibus, ramifi- 

 catione 8c fragilitate. 



4. CoRNICULARIA aculeata : thallo cartilagineo fru- 



ticuloso-caespitoso glabro fusco-castaneo , ramis 



bre- 



