368 Transactions. — Botany. 



V. immixta lecanorina intiis incoloria, disco piano luteo-rubro v. luteo-fiisco" 

 in centre plerumque fisso v. depresso v. decolore, margiue nonnihil gyrato 

 elevato minutissime grannloso, parapliysibiis capillaribus discretis. Sporse 

 in ascis cylindricig uniseriales ellipsoidese incolores, longit. -015, crassit. '008 

 mm. 



Ad cortices. 

 Pannaria immixta v. gyrantha, Nyl. in litt. 



4. Pannaria ajnculata, Kn. 



Thallus sordide fusciis passim fumoso-fuscus v. plmnbeo-cinereus minute 

 squamuloso-microphylliuus (squamiilis nonnihil laciniato-e£6.guratis) v. dif- 

 fracto-areolatiis v. detritns tum demum hypotbaUo nigro passim v. omuino 

 nudo. Apotbecia biatoruia brimnea v. rufo-nigra plana interdum convexa 

 intiis incoloria v. omnino dilute luteola, margine pallidiore tenui integro. 

 Sporffi in ascis late cylindricis ellipsoidese saepissime utrinque ax^iculat^ 

 dilute fuscescentes, longit. -018, crassit. '009 mm. 



Ad cortices. 



5. Pannaria triptophylla, Acb. 



Apotbecia biatorina margine erecto. Spora ellipsoideas. Hypothecium 

 fusco-7ii(jricante. Hypotballus caeruleo-nigricans. 



Ad cortices. 



6. Pannaria suhsimilis, Kn. 



Thallus glauco-cervinus squamulosus v. microphyllo-squamulosus, squa- 

 mulis membranaceis contiguis adpressis rotundato-incisis singulis e centro 

 radiantibus, granulis gonimis c£erulescentibus, hypothallo carulescenti- 

 nigro limitatus. Apotbecia rubra v. croceo-rubra biatorina plana mar ginata, 

 margine pallido integro tenui discum squante, excipulo proprio luteo-fusco, 

 hypothecio concolore, paraphysibus gracilibus non bene discretis (apice non 

 dilatis et vix incoloratis). Spora in ascis cylindraceis ellipsoidese incolores 

 V. dilute luteolfe, longit. "015, crass. "006 mm. 



Ad cortices. 



The colour of thin sections of the apotbecia seen by reflected light is a 

 delicate rufous yellow. 



Syn. : Pcmnaria nigro -cijicta, Nyl., Handbook New Zealand Flora, fol. 575. 



There is some confusion in respect of Montague's lichen. Both Babing- 

 ton and Nylander consider the New Zealand hchen to be the Psoroma nigro- 

 cincta of Montague. But in fact Montague's plant, of which there is an 

 authentic specimen in the Kew Museum (probably contributed by Montague 

 himsell), is a true Psoroma; the thallus with large green gonidia, apotbecia 

 biatorine, excipulum of a pale brown or "Indian pink," and agreeing closely 

 with the description in " Sylloge Plant. Crypt." On the other hand No. 51 

 of Leighton's Ceylon Lichens, ''Pannaria niyro-cincta, Mont," is a true Pan- 



