in the neighbourhood of Oswestry and Ludlow. 91 



I retain this name in deference to the authority of my friend Dr. 

 Taylor, though I confess I am more inclined to consider it as a Lecidea. 

 Whatever generic name it may properly claim, it certainly ought to 

 retain the specific one of anomalus ; for a plant which has been de- 

 scribed by Acharius as a Lecanora, by Hooker as a Verrucaria, and 

 by Taylor as a Baomyces, evidently occupies so doubtful a place, that 

 its position can scarcely be considered as thoroughly established. It 

 is not an uncommon lichen on the Cam])rian rocks. The rock at 

 Craigforda indeed on which it grows is an indurated sandstone ; but 

 at Pentregaer it grows on the rocks of the Silurian system. It varies 

 very much in the colour of the thallus from a dull or yellowish white 

 to a smoky brawn. The apothecia are immersed in the crust, and do 

 not appear to me to possess a sufficient stipes to enable it to rank 

 with Baomyces. 



Calicium stigonellum (sessile, Persoon, M. and N. 858). Upon old 

 oaks at Llanforda, scarce, but profusely upon a single oak in Mid- 

 dleton-lane, just beyond the Llys House. 



This plant and the following one, the turbinatum, have been fre- 

 quently confounded, though no two plants can be more distinct. 

 The present is a plant of unfrequent occurrence, growing either upon 

 the crust of the Porina pertusa, or else upon the rugged bark of old 

 oaks. On the oak-tree in Middleton-lane it is much more developed 

 than when growing on the Porina pertusa. The apothecia are per- 

 fectly sessile, and when cut exhibit rather a thick, white layer im- 

 mediately underneath the disc, connected at the edges with a lower 

 one of much less thickness, and containing between these two a 

 black powdery mass. The disc is covered with a gray bloom, and 

 has a border of a darker colour, giving it the appearance of a 

 Lecidea. 



C. turbinatum {gelatinatus. With. ; Sphceria sphincterica, Sow. 

 Fung. 286, M. and N. 366). This is a very common plant, grow- 

 ing on the crust of the Porina pertusa. The apothecia in this are 

 polished and pear-shaped, with a depression at the top and a little 

 dot in the centre of the depression, giving it the appearance of a 

 Verrucaria or a Sphaeria. I had suspected that it ought to be re- 

 moved again to the genus Sphceria where Sowerby had placed it, but 

 upon requesting my friend Mr. Berkeley to examine it, he confirms 

 the authority of Fries in still retaining it as a Calicium. 



C . ferrugineum. Old park pales at the Moor Park and Hay Park 

 near Ludlow ; not of very common occurrence. 



C. chrysocephalum. Park pales at Downton Castle in Hereford- 

 shire, near the bridge above the Hay Mill. This is one of the scarcest 

 of this genus ; the bright vivid hue of the crust will not fail however 

 to arrest the practised eye of the lichenist, should he come within its 

 reach, so that he will not be likely to overlook it. 



C pheBocephalum. Pales of Hay Park near Ludlow, This is a 

 very distinct species, and cannot possibly be confounded with any 

 other. The " tumid, crowded and leaf -like appearance of the crust," 

 so well described in the ' Lichenographia Britannica,' gives it indeed 

 very much the appearance of a minute Bceomyces, or a diminutivg 



H2 



