50 
Cetraria 
2891. ciliaris, Ach. 
var. platyphylla. 
2892. Islandica, Ach. 
2893. nivalis, Ach. 
2894. cucullata, Ach. 
2895. ssepincola, Ach. 
var. allophylla, Tuck. 
2896. glauca, Ach. 
2897. juniperina, Ach. 
2898. Pinastri, Sommerf. 
2899. Fahlunensis, Ach. 
2900. Oakesiana, Tuck. 
2901. lacunosa, Ach. 
2902. aurescens, Tuck. 
Evernia 
2903. vulpina, Ach. 
2904. prunastri, Ach. 
2905. furfuracoa, Mann. 
Usnea 
2906. barbata, Fi*. 
2907. angulata, Ach. 
2908. cavernosa, Tuck. 
2909. longissiina, Fr. 
2910. trie h odea, Ach. 
Alectoria 
2911. Fremontii, Tuck. 
2912. ochroleuca, Fr., var. 
f-armentosa, Twck. 
2913. jubata, Ach. 
Theloschistes 
2914. chrysophthalmus, N. 
2915. parietinus, Norm. 
Parmelia 
2916. saxatilis, Ach. 
var. omphalodes, Fr. 
2917. physodes, Ach. 
var enteromorpha. 
2918. conspersa, Ach. 
2919. olivacea, Ach. 
var. sorediata. 
2920. ambigua, Ach. 
2921. elegans, Ach. 
2922. perlata, Ach. 
2923. perforata, Ach. 
2924. tiliacea, Flcerk. 
2925. colpodes, Ach. 
2926. caperata, Ach. 
2927. Borreri, Turner. 
2928. aleurites, Ach. 
Physcia 
2929. pulverulenta, Nyl. 
2930. stellaris, Wahl, 
var. hispida, Fr. 
2931. obscura, Fr. 
2932. speciosa, Fr. 
2933. aquila, Nyl., var. de- 
tonsa, Tuck. 
Pyxine 
2934. cocoes, Nyl., var. sore- 
dita, Tuck. 
Umbilicaria 
2935. erosa, Hoffm. 1 
2936. hyperborea, Hoffm. 
2937. pustulata, Hoffm. 
2938. Dillenii, Tuck. 
2939. Muhlenbergii, Tuck. 
2940. Vellea, Ach. 
2941. poly phy 11a, Hoffm. 
Sticta 
2942. pulmonaria, Ach. 
2943. scrobiculata, Ach. 
2944. fuliginosa, Ach. 
2945. glomerulifera, Delis. 
2946. quercizans, Ach. 
2947. crocata, Ach. 
2948. linita, Ach. 
Solorina 
2949. saccata, Ach. 
Nephroma 
2950. lsevigatum, Ach. 
2951. tomentosum, Hoffm. 
2952. Helveticum, Ach. 
2953. arcticum. 
Peltigera 
2954. venosa, Hoffm. 
2955. canina, Hoffm. 
2956. polydactyla, Hoffm., 
2957. scutata, Fr. 
2958. rufescens, Hoffm. 
2959. aphthosa, Hoffm. 
Pannaria 
2960. lepidiota, Fr. 
2961. lurida, Nyl. 
