DR. LArOEK LINDSAY OS ARTHONIA MKLASPERMELLA. 281 



nium is either unaffected by iodine, or it becomes exceptionally very 

 slightly blue. Its ally, Lecidea patellarioides^ Nyl-*? may also by 

 Tungologists be regarded as a Fungus. The thallus is absent, or 

 nearly so ; the apothecia have the characters of those of the genus 

 I^atellaria, Fr. (Fungi), as well as of the Patellarioid Lecidece and 

 ArtJionice ; the hymenium is tmaffected by iodine, or becomes ob- 

 scurely blue or reddish. The acicular spores distinguish these 

 two species from (but otherwise there is considerable resem- 

 blance to) Arfhonia meJaspermeUa. 



Lecidea resincs, Fr., one of the most beautiful of our native 

 Lecidese, though classed by IS^ylander, in his latest work, as a 

 Lichenf, he suggests may be more properly regarded as a Fungus. 

 Fries, the eminent Scandinavian Fungologist, described it as a 

 JPeziza (Fungus). It is the Peziza myriospora of Hepp. Exs. 332. 

 In this plant there is sometimes, apparently, a thallus, sometimes 

 none; and where it exists it seems doubtful whether it belongs to 

 the Lecidea ; the polysporous thecse, and the extremely minute 

 globose spores are at least exceptional and peculiar in the Lichen- 

 genus Lecidecd, The hymenial gelatine gives an intense Hue 

 colour with iodine ; and there is this further feature of interest, 

 that the organism hitherto known as Sph^ria resincs, Fr., consti- 

 tutes the spermogones of the Lecidese, In the Hookerian Herba- 

 rium I have found Peziza Neesii^Yloi.^ confounded with Lecidea 

 anomalaj Fr., among which it grows on the same bark in some 



foreign specimens. 



Funatcs 



irregularly bursting through the bark on which the apothecia 

 of the Lichen are simply adnate or sessile. 



A still more beautiful flesh-coloured Lecidea, L. lutea^ Sch., 

 Nylander also suggests may find its proper place among the 

 Fungi rather than among the Lichens, though he still classes it 

 with the latter J. It gives a wine-red with iodine, but contains 

 no gonidia. He appears disposed to regard it as a Slictis, allied 



§ 



contains 



gonidia\\. Nevertheless this beautiful little plant, Lecidea lutea, 

 has externally quite as much the aspect of a Lichen as Lecidea 

 pineti, Ach., or members of the Oyalecta section of the Lecidece. 



The distinguishing characteristics by which fungologists and 

 lichenologists at present profess to be guided in the nomenclaturt^ 



Lich. Scand. p. 211. t Ihid. p. 213. % Ihid. p. 192. 



§ Lecidea pallida, Njl. Proflrom. p. 102. »[ Prodrom. p. 103, 



V 2 



