320 NOTICES OF BOOKS. 



two present, or second volume, bring the number to 100. They are 

 accompanied by the generic and specific name, a reference to the Au- 

 thor's ' Synopsis of the Lichens of North America/ the locality, and 

 now and then some valuable notes. No. 51 is Usnea angulata, Ach., 

 from Texas (perhaps too near the well-known U. hirta). 53. Evernia 

 Fremontii, Tuckerm, MSS., California. 53. Evernia vulpina, AcL, 

 California (and which may be seen on the bark of the Mammoth Tree 

 of California, Wellingtonia gigantea^ now exhibited in London). 54. 

 Evernia prunastri, AcTi. 55. Evernia furfuracea, Mann. 56. E. fur- 

 furacea, )8, Cladonia, Tuckerm. 57. Raraalina Menziesii, Tayl. in 

 Hook. Journ. of Bot. vi. 189, first detected by Menzies, California; 

 its fronds constitute a beautiful tissue of network. 58, .Eamalina ca- 

 licaris, )5, fastigiata, Ir, 59. Cetraria nivalis, AcK, from the summits 

 of the White Mountains, 60. Cetraria ciliaris, Ach.. arboricola. 61. 

 Cetraria lacunosa, /S, Atlantica, Tuckerm. 62. Nephroma arcticum, 

 -Fr., with apothecia an inch broad ! 63. Peltigera venosa, Hoffm. 64. 

 Solorina saccata, Ach. 65. Sticta crocata, Ach, 66. Sticta querci- 

 zans, Ach. 67. Sticta scrobiculata, Ach. 68. Sticta pulmonaria, Ac'h. 

 69. Parmelia perforata, Ach. 70. Parmelia tiliacea, Tr. 11. Parme- 

 lia placorodia, Ach.^ sepincola, 72. Parmelia physodes, AcJi. 73. 

 P. physodes, p, enteromorpha, Tiickerm. 74. Parmelia colpodes, Ach. 

 75. Parmelia caperata, Ach. 76. Parmelia incurva, Fr. 77. Parmelia 

 ambigua, Ach. 78. Parmelia centrifuga, Ach. 79. Parmelia parie- 

 tina, a, foliacea, Fr. 80. Parmelia chrysophthalma, Ach. 81. Parme- 

 lia speciosa, Ach. 82. Parmelia speciosa, ^, galactophylla, Tuckerm., 

 a most beautiful variety. 83. Parmelia stellaris, Fr., a. 84. Parmelia 

 stellaris, /?, hispida, Fr. 85. Parmelia stellaris, y (tribacia), Fr. 86. 

 Parmelia caesia, a (stellata), Fr. 87. Parmelia obscura, ^, ulothrix, 

 Fr. 88. Parmelia fibrosa, Fr., j8, stellata, Tiickerm. 89. Parmelia 

 brunnea, Ach. 90, Parmelia pallescens, Fr., a (sepincola). 91. Par- 

 melia ochrophsea, Tuckerm., MSS. 92. Parmelia varia, Fr., a (sepin- 

 cola), 93. Parmelia cerina, Ach. 94, Stereocaulon corallinum, Fr. 

 (our St. paschale). 95. Cladonia degenerans, Floerk. 96. Blatora 

 porphyritis, Tuckerm. 97. Opegrapha stictica, Fr. et Tnckerra. MSS. 

 98. Trachylia phteomelana, Tuckerm. MSS. 99. Sphaerophoron fra- 

 gile, Pers. 100. Gyrostomum iirceolatum, Fr. — This volume, equally 

 with the former one, cannot fail to be very acceptable to the Crypto- 

 gamic botanist. 



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