BOTANY 8 9 5 Evernia prunastri, Ach. 871 Lecanora aurantiaca, Nyl. 890 var. stictocera, Hook. 875 — galactina, Ach. 883 Parmelia saxatilis, Ach. 878 — subfusca, Nyl. 888 — caperata, Ach. 865 — sulphurea, Hoffm. 880 — subaurifera, Nyl. 873 — atra, Ach. 882 — physodes, Ach. 876 — parella, Ach. 896 Lobaria pulmonaria, Hoffm. 857 — calcarea, Somm. 897 Peltidea aphthosa, Ach. 863 — fuscata, Schrad. 898 899 Peltigera canina, Hoffm. — horizontalis, Hoffm. 86 5 866/ Pertusaria amara, Nyl. 881 Physcia parietina, De Not. 870 — communis, DC. 888 — lychnea, Nyl. 877 Urceolaria scruposa, Ach. 889 — ciliaris, DC. 864 Lecidea quernea, Ach. 885 — aipolia, Nyl. 869 — sanguinaria, Ach. 849 Leproloma lanuginosum, Nyl .(?) 858 — calcivora, Ehrh. 886 Lecanora saxicola, Ach. 861 — canescens, Dicks. 888 — laciniosa, Nyl. 862 — caeruleo-nigricans, Lightf. 876 — citrina, Ach. 850 — canescens, Ach. Although Lichen incanus is referred by subsequent writers to Lecidea pachycarpa, Duf., that is a comparatively rare species, whilst Abbot's L. incanus is stated to be common on the bark of trees ; he probably refers to the undeveloped growth of L. canescens in a sorediate condition. 872 Lecidea rubella, Ehrh. 854 Opegrapha varia, Pers., f. pulicaris, 860 — muscorum, Sw. Leight. 861 — canescens, Dicks. 853 Graphis scripta, Linn. 856 — petraea, Leight. 863 Verrucaria nigrescens, Pers. The rarer species in this list are Bceomyces icmadophilus, Alectoria jubata, Peltidea aphthosa, Lecidea sanguinaria and Peltigera horizontalis, which are usually found in upland or subalpine districts ; Peltidea aphthosa generally occurs in limestone woods, as in Derbyshire, where it is frequent. Of the commoner lichens, which are almost certain to occur in districts where other species equally common are found, there is no doubt that many would be detected in the county by careful search and that this list might be largely increased. The first three lichens in Abbot's list, Nos. 849, 850 and 851, used to be placed in the genus Lepraria, but all three, as well as the rest of this spurious genus, consist of undeveloped sorediate thalli, and prob- ably each included several species. Lichen incanus was probably L. canescens, but might be an undeveloped Pertusaria or Lecanora hcema- tomma or even L. rubra, all of which have whitish powdery thalli. Similarly Lichen albus may have been Leproloma lanuginosum or several others, and L. jiavus is likewise doubtful. These therefore cannot be regarded as positive records. Mr. Holmes has followed Crombie's British Lichens as far as Urceolaria scruposa and for the remainder Leighton's Lichen Flora of Great Britain. FUNGI 1 Abbot gave considerable attention to the larger forms of fungi, and also includes in his list some of the smaller ones. About a hundred 1 By John Hamson, Bedford. 61
