712 



CLXI. LICHENES. 

 1-2 3. ■ a 



722. Thelotrema expansum, C. Knight. 723. T. trypethelioides, C. Knight. 



(a) Sect, verruca with more than one apothecium, (b) do. do., with only one 

 apothecium, (c) spore, (a) — (c) enl. 



724. Ccenogonium Linkii, Ehrcnb. 725. Lecidea rhypoderma, C. Knight. 



(a) Apothecium, nat. size, (b) apothecium and thallus filaments, enl. 



726. Gyalectidium phyllocharis, Nyl. 727. Lecidea tatiensis, Mont. 

 728. L. myriocarpa, DC. 729. Graphis mucronata, Stirton. 



730. G. Afzelii, Ach. 731. G. parmeliarum, C. Knight. 



(a) Thallus of Parmelia, (b) the parasite. 



732. Graphina fisso-ftjrcata, Leight. 733. Arthonia cinnabarina, Wall. 



734. Glyphis confluens, Mont. 735. Chiodecton hypoleucum, C. Knigh't. 



(a) Stroma and lirellae, enl. (a) Verrucas, (b) sect, several verruca. 



736. Strigula elatior, Stirton. 737. Parmentaria pallida, C. Knight. 



Ca) Stromata. 



738. Clathroporina pustulosa, KrpJi. 739. Pyrenula Baileyi, C. Knight. 



(a) Theca and spores. 



