SHORT XOTES 195 



SHORT NOTES. 



ToLYPELLA. IXTRICATA Leonli. On Mav 2.jth (1917) I found 

 this plant screwing in an old disused strontium digs^ino^ in the neigh- 

 bourhood of Yate, W. Glos. A specimen was submitted to Mr. James 

 Grroves, who says that TolypeUa intricafa was first recorded for 

 W. Glos. by St. Brody in the Newent Canal. — Cecil Sand with. 



Caeex pseudo-paeadoxa S. Gibs. (p. 139). From his letter to 

 me I anticipated Mr. Salmon's suggestion that this ]Dlant might 

 possibly be the inferior specimen of C. paniculafa alluded to by me 

 as growing with C. teretiuscula at Seaman's Moss Pits ; and for this 

 reason I was wishful to see Hunt's herbarium, Avhere I know some 

 s])ecimens of C. paniciilata from this locality were preserved (Fl. 

 Cheshire, p. 322). I have been unsuccessful in discovering Hunt's 

 herbarium, but Mr. Charles Bailey found, in his collection, specimens 

 of C. fcinicidata gathered at Seaman's Moss by Mr. John Hardy in 

 1852 — only eight years after the controversy ; these Mr. Salmon has 

 seen and determines to be C. 'paniculata — they confirm my recollec- 

 tion in being inferior to those frequently found in Cheshire meres. 

 If C. pseudo-varadoxa grew, as Gibson says, plentifully by the sides 

 of Malham Tarn and was also found at Seaman's Moss Pits, it appears 

 strange that no specimen seems to be in existence from either locality. 

 It might even now be desi]-able to search for it at Malham, but 

 Seaman's Moss Pits were filled up and the locality destroyed man}^ 

 years ago. — Spe^'cee H. BiCKiiAii. 



Chjexotiieca melaxoph^a (Ach.) Zwackh., var. nov. flayo- 

 CITEIXA. The lichen for Avhich the above name is proposed, was 

 recently collected in a wood near St. Alban's, Herts. Its characters 

 are microscopic, but the deep yellow colour of parts of the thallus 

 makes it quite easy to detect after once being seen. It ma}^ be 

 diagnosed as : " Thallus granulatus, effusus, subcrassus, primum endo- 

 phlseodes, colore variabilis e cinereo flavescens. Apothecia nmiierosa 

 iis plantce typicse similia." The whole colouring suggests the variety 

 ferruginea, but the apothecia are not sessile and there is a difference 

 of habitat. 



This variety occurs in great abundance on the bark of oak and 

 ash — the latter scarce in the wood — and also on the still adhering 

 stems of dead ivy. The oak and ash trees are not of great age ; the 

 stems of \\j, on Avhich the lichen was found, averaged 4 mm. in 

 diameter. In the case of the ivy, the greater part of the lichen 

 thallus is immediately under the epidermis, which extends over it as a 

 bright 3'ellow film. After a time the epidermis breaks up and the 

 granular thallus is then seen to sj^read over the outer surface and to 

 be freely exposed, but before this takes place some of the apothecia 

 break through and appear to be growing from the j^ellow film. On 

 the oak the thallus sometimes creeps under the edge of the old 

 phellogen layers of the bark, and here also the apothecia occasionally 

 force themselves through, before the overlying phellogen has been 

 broken into fragments by the pressure of the growing lichen from 

 1 eneath. 



