A HISTORY OF NORFOLK Gomphonema, Agardh Achnanthes, Bory . Achnanthidium, KUtzin Cocconeis, Ehrenberg Campyloneis, Grunow Anarthoneis „ Epithemia, KUtzing Eunotia, Ehrenberg . Meridion, Agardh. . Glyphodesmis, Grunow Rhaphoneis, Ehrenberg Asterionella, Hassell . Synedra, Ehrenberg . Sceptroneis „ Fragilaria, Lyngbye . Campylosira, Grunow Licmophora, Agardh Diatoma, Decandolle Denticula, KUtzing . Tabellaria, Ehrenberg Grammatophora „ Striatella, Agardh Rhabdonema, Kotzing Cymatopleura, Smith 7 5 I 3 I I 7 5 I I 2 3 II I lO I 2 3 I 2 2 I 2 3 species Nitzschia, Hassell . . . 22 species Hantzschia, Grunow ■ 4 )) Surirella, Turpin . . '4 )> Campylodiscus, Ehrenberg 5 w Rhizosolenia „ • 5 >> Ditylum, Bailey . . I )) Chsetoceros, Ehrenberg . • 3 jy Melosira, Agardh. . . 6 )> Liparogyra, Ehrenberg . I » Isthmia, Agardh . . I j> Eucampia, Ehrenberg . 3 )> Biddulphia, Grey . . 4 » Triceratium, Ehrenberg 3 » Amphitetras „ I )) Lithodesmium „ I >» Eupodiscus „ I >> Auliscus „ I » Actynoptychus „ 2 ») Hyalodiscus „ I » Cyclotella, KOtzing . . 9 » Actinocyclus, Ehrenberg 4 » Coscinodiscus „ 7 J) Palmeria, Greville . . 2 » LICHENS {Lichenes) COLLEMACEI, Nyl. COLLEMEI, Nyl. Collema tenax, Ach. Runton and Cromer — cheileum, Ach. Thetford Collemodium Schraderi, Nyl. Cahtor Church Leptogium tenuissimum, Koerb. Near Norwich and Yarmouth — subtile, Nyl. Colthhall — lacerum, sub. sp. pulvinatum, Nyl. Cromer — scotinum, var. sinuatum, Malbr. Caistor — palmatum, Mont. Yarmouth and Hemsby LICHENACEI, Nyl. Caliciei, Nyl. Sphinctrina turbinata, Fr. Yarmouth — anglica, Nyl. Cantor Calcium chrysocephalum, Ach. Framlng- ham-Earl — phasocephalum, T. and B. Lakenham — melanophasum, var. ferrugineum, Schjer. Framingham-Earl — quercinum, Pers. Lakenham — hyperellum, Ach. Earsham and Acle — curtum, T. and B. Norwich — trachelinum, Ach. Earsham var. xylonellum, Nyl. Framingham Trachylia tigillaris, Fr. Near Yarmouth — tympanella, Fr. Earsham and Yarmouth Coniocybe furfuracea, Ach. North Wootton B.TOMYCETEI, Nyl. Basomyces rufus, D. C. Near Norwich — roseus, Pers. Thetford IVarren Cladoniei, Nyl. Pycnothelia papillaria, Duf. Mousehold Heath, Norwich Cladonia endiviaefolia, Fr. Hemsby — alcicornis, Flk. Hunstanton — pyxidata, Fr. (Frequent, sterile) var. chlorophaea, Flk. IVootton Common — fimbriata, Fr., var. radiata, Nyl. Near Norxvich — gracilis, HofFm. IVooton Common — degenerans, Flk., var. anomaea, Flk. Lakenham — furcata, HofFm. (Only sterile) — pungens, Flk. Thetford and near Hemsby — casspititia, Flk. North IVootton — delicata, Flk. Edgefield — coccifera, Schaer. (Only sterile) Cladina sylvatica, Nyl. North IVootton Common — uncialis, Nyl. Near Yarmouth Ramalinei, Nyl. Ramalina calicaris, Nyl. Near Norwich — fraxinea, Ach. Holt — pollinaria, Ach. ; form humilis, Ach. Holt and near Norwich — fastigiata, Ach. Holt — farinacea, Ach. Kings Lynn and Laken- ham 70