378 



Transactions . — Botany . 



47. Megalospora dispora, Kn, 



Tliallus cinereus grauulatus contiuuus. Apotliecia atro-fusca super- 

 ficialia convexa (diam. 0-6 mm.) immarginata ; excipulum proprium dilute 

 ochraceum ; liymeuium grumosum fuscidulum paraphysibus Vferis destitutum 

 hypothecio crasso dilute luteo eiiatum. SporsB in ascis pyriformibus binse 

 ellipsoideae simplices incolores, longit. -042, crassit. -02 mm. ; episporium et 

 endosporium corio crasso disjuncta. 



Ad cortices. 



48. Lecanora homologa, Nyl. 



Tliallus sordide albo-cinereus subl^vis indetermiuatus. Apotbecia (made- 

 facta diam. •! mm.) disco rufo piano, margine tumido subgranuloso albo, 

 parapliysibus non bene discretis apice granosis fuscescentibus, excipulo tbal- 

 lode pallido gonimico calluloso, gonimia magna. Sporse ovoidese 3-loculares, 

 loculis tubulo teuui junctis, incolores, longit. -024, crassit. '012 mm. 



Ad cortices. 



Fig. 



DESCEIPTION OF PLATES XII. and XIII. 



Fig. 



1. Sticta amphisticta, Kn. 



a, spores. 



b, ascus with spores. 



2. Sticta ejnsticta, Nyl. 

 a, ascus with spores. 



3. Pannaria atro-fiimosa, Kn. 



a, ascus with spores. 



b, granule gonimse. 



4. Pannaria apiciilata, Kn. 



a, ascus with spores, 



b, granulse gonimae. 



6. Pannaria triptopliylla, Ach. 



a, ascus with spores. 

 6. Pannaria subsimilis^ Kn. 



a, ascus with spores. 



8. Pannaria biatorina, Kn. 

 a, ascus with spores. 



6, two spores. 



c, granulse gonimae. 



9. Pannaria subimviixta, Kn. 



a, spores in ascus. 



b, two nodules with granule gonima3. 



10. Physcia plinthiza, Nyl. 

 a, three spores. 



11. Lecanora habingtonii, Mass. 



a, ascus with spores and three sepa- 



rate spores. 



b, Lecanora punicea, Ach., two spores. 



c, „ „ two spores. 



12. Bacidia subscripta, Kn. 

 a, two spores. 



13. Bacidia glomerulosa, Kn. 



a, three spores. 



b, granul£e gonimfe in nodule. 



c, granule gonimffi. 



14. Bacidia eucoccodes, Kn. 



a, a separate spore. 



b, granules gonimffi in nodule. 



c, ascus with spores. 



15. Bacidia spirospora, Kn. 



a, ascus with spores. 



b, spore separate. 



16. Bacidia melastegia, Kn, 

 a, ascus with spores. 



17. Bacidia anceps, Kn. 

 a, two spores. 



18. Bacidia cerasentera, Kn. 

 a, spore. 



19. Bacidia nielasema, Kn. 

 a, two spores. 



20. Bacidia mesospora, Kn. 



a, ascus with spores. 



b, spore. 



21. Bacidia stenospora, Kn. 



a, ascus with spores. 



b, spore. 



22. Bacidia pedicellata, Kn. 

 a, spore. 



