868 Transactions.—Dotany. 
v. immixta lecanorina intus incoloria, disco plano luteo-rubro v. luteo-fusco 
in centro plerumque fisso v. depresso v. decolore, margine nonnihil gyrato 
elevato minutissime granuloso, paraphysibus capillaribus discretis. Spore 
in ascis cylindricis uniseriales ellipsoideæ incolores, longit. ‘015, crassit. *008 
mm. 
Ad eortices. 
Pannaria immiata v. gyrantha, Nyl. in litt. 
4. Pannaria apiculata, Kn. 
Thallus sordide fuscus passim fumoso-fuscus v. plumbeo-cinereus minute 
squamuloso-mierophyllinus (squamulis nonnihil laciniato-effiguratis) v. dif- 
fracto-areolatus v. detritus tum demum hypothallo nigro passim v. omnino 
nudo. Apothecia biatorina brunnea v. rufo-nigra plana interdum convexa 
. intus incoloria v. omnino dilute luteola, margine pallidiore tenui integro. 
Spore in ascis late cylindricis ellipsoidez sæpissime utrinque apiculate 
dilute fuscescentes, longit, -018, crassit. 009 mm 
Ad cortices. 
5. Pannaria triptophylla, Ach. 
Apothecia biatorina margine erecto. Spore ellipsoidem. Hypothecium 
fusco-nigricante. Hypothallus ceruleo-nigricans. 
Ad cortices. 
6. Pannaria subsimilis, Kn. 
Thallus glauco-cervinus squamulosus v. microphyllo-squamulosus, squa- 
mulis membranaeeis contiguis adpressis rotundato-incisis singulis e centro 
radiantibus, granulis gonimis cerulescentibus, hypothallo cærulescenti- 
nigro limitatus. Apotheciarubra v. croceo-rubra biatorina plana marginata, 
margine pallido integro tenui discum sequante, excipulo proprio luteo-fusco, 
hypothecio concolore, paraphysibus gracilibus non bene discretis (apice non 
dilatis et vix incoloratis). Spore in ascis cylindraceis ellipsoidez incolores 
v. dilute luteolre, longit. 015, crass. -006 mm. 
Ad cortices. 
The colour of thin sections of the apothecia seen by reflected light is a 
delicate rufous yellow. 
Syn.: Pannaria nigro-cincta, Nyl., Handbook New Zealand Flora, fol. 575. 
There is some confusion in respect of Montagne’s lichen. Both Babing- 
ton and Nylander consider the New Zealand lichen to be the Psoroma nigro- 
cincta of Montagne. But in fact Montagne's plant, of which there is an 
authentic specimen in the Kew Museum (probably contributed by Montagne 
himselt), is a true Psoroma; the thallus with large green gonidia, apothecia 
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 nigro-cincta, Mont,” is a true Pan- 
