316 TnE JOURNAL or botajtt 



stone, Ebbor Gorge, Mendip, Somerset (6), April 1917. Small dark 

 dots are often sprinkled on the tballus, the hymenial algal cells liave 

 thin cell-walls and are arranged in irregular and broken lines between 

 the asci, those near the ostiole sometimes having a reddish tinge. 

 Tlie spores do not give any particular stain with iodine, are usually 

 uncoloured but may be sliglitly yellowish or brownish, are often single 

 in the ascus, and the cells occasionally become fairly regular. 



The relationship of this plant with *S'. itmhrimiim and S. clopima is 

 very close. The chief difference is in the colour of the spores, and 

 this is a variable character for the genus, as well as for other genera 

 of Verrucariace;e. It is with some hesitation that I give it the status 

 of a species, since a careful revision of the genus may result in the 

 union of some of the species already described, and the Ebbor Gorge 

 pliint raa}' have to be considered as a varietj^ or form. 



Artliopyrenia areniseda A. L. Sm. Similar incrustations to 

 those found on the Southport sand-dunes have been observed on 

 Bi-aunton buiTows (4) but no apothecia have as j'et been detected. 



Leptorhapliis epidermidis (Ach.) Th. Fr. is a fungus. Chard (5). 



Didi/mospJi(pn'a pulposi Zopf is a fungus parasitic on the thallus 

 of Collema pylposinn. The spores are usually 4-n2e, 1-septate, 

 colourless, 19-23 x 6-7 /x, and the asci are untinged with Iodine. 

 Corfe and Wi-jintage (5). A specimen of a similar parasite on Lepto- 

 gium scofinum, collected by Mr. Hebden at Buckden (64) has smaller 

 spores, 12-16 x3'5-4/x, which are usuallv 8-n?e and the asci become 

 reddish with iodine. On a specimen of Collema graniiliferum col- 

 lected in rock crevices near Yatton (6), another parasite occurs. The 

 minute perithecia are brownish above, the paraphyses are indistinct 

 or absent, the ascus is longly-clavate, 50x12-13^/, the hymenial 

 gelatine becomes bluish with iodine, quickly clianging to wine-red. 

 Tlie spores are colourless, one-septate, 26 /x long, and are of a peculiar 

 sliape, their lower cells being acuminate and much longer and 

 narrower than the upper ones Avhich are 6-7 /a broad. 



In conclusion I must acknowledge my indebtedness to Miss A. L. 

 Smith and Messrs. Hebden, Reader and Wheldon, who have been kind 

 enough to examine plants submitted to them, and to supply me with 

 much information respecting them. 



NOTES FROM CARNARVON AND ANGLESEY. 



By C. E. Salmox, F.L.S., axd W. G. Travis. 



Most of the following plants were noted by C. E. S. during a 

 hurried two days' visit to Carnarvonshire in June, 1916, with a day's 

 excursion to Anglesey ; and by W. G. T. during two visits to the 

 latter in June and Sej)tember of the same year. The only portions 

 of Anglesey visited on these occasions were the neighbourhood of 

 Holyhead and the adjacent rocky coast of Holy Island, and, on the 

 larger island, some of the dune tracts on the south-west coast, namely, 

 Rhosneigr, Aberffraw, jNIaelog, and Newborough. It has been thought 

 convenient to combine and publish in the form of a joint paper our 



