254 THE ,TOURNAL OF BOTANY 



where it was growing in luxuriance. It is frequent on the Bagshot 

 Beds of Dorset and is recorded from Sussex, apparently on Lower 

 Greensand and Hastings Beds (Arnold, Fl. Sussex, p. 101). 



Illecehrum verticillatum L. is one of the curiosities of the district. 

 Its occurrence is described by Mr. Druce (Fl. Berks, 416), and it has 

 for a long time appeared in two places ; one has now been enclosed in 

 a fowl-yard and the plant will probably vanish thence, but last year it 

 had spread a good deal in the other locality. 



Certain ])iants common on the chalk have transgressed on to the 

 Bao-shot Sand ; thus I have found Polyfjala vulgaris L. at Welling- 

 ton College ; Campanula glomerata L. has flowered at the same place 

 near Crowthorne for several ^^ears in succession, and I believe 

 originated through the ground being treated with a chalk dressing. 

 Legousia hyhrida Delarbr. grows on Birchen Inhams Farm, AVoking- 

 ham, and in Dorset it is recorded from the Bagshot Beds of Creech 

 clay-pits (Fl. Bournemouth, p. 142). 



In the case of some of the plants which occur everywhere interest 

 attaches to some varieties, thus Taraxacum officinale var, erythro- 

 spermum Andrz. is frequent on the football grounds at Wellington 

 College, and occurs at other places in the district. It is recorded 

 from the con-esponding formation of Dorset. 



Ar noser is piisilla Gaertn., a colonist, is recorded from several 

 places on the Bagshot Sand in Fl. Surrey (p. 124) and the only 

 locality given in Fl. Berks (p. 308) is in the Bagshot district. In Fl. 

 Hamps. it is given from the Bagshot Beds of both North and South 

 Hants. I found it in a field near Brimshot, Surrey, in 1915 and have 

 seen it for several successive 3'ears near Yately, Hants. It is recorded 

 from the Lower Greensand and the Blackheath Pebble Beds. 



Claytonia perfoliata Don, a native of North America, was 

 recorded as established on Bagshot Sand at Yately, Hants, by the late 

 Rev. C. W. Penny (Journ. Bot. 1873, 206) ; it "is still there in more 

 than one place, but it is around Horsell Birch in Surrey that it 

 flourishes in the greatest abundance on the Bagshot Sand, and near 

 Chobham I have seen it on Valley Gravel. It has been recorded from 

 both Eocene and Purbeck Beds in South Hants and Dorset (Fl. 

 Bournem. p. 55). 



Anchusa officinalis L., a native of Central and Southern Europe, 

 was found by Mr. Druce near Finchampstead in 1891 (Fl. Berks, 

 p. 349) ; I saw it, possibly at the same place, in 1918. Though well 

 within the Bagshot district it was not on the Bagshot Sand, but on an 

 overlying patch of Plateau Gi*avel. 



Juncus tennis Willd., also a native of the Continent, was found 

 by myself near Wellington College in 1915 ; it seems to be spreading, 

 for it was growing in more than one place last season. 



Sedges are abundant in the Bagshot District. Mr. Druce gives a 

 few characteristic species (Fl. Berks, p. xh) and 29 species are 

 recorded from the Bagshot Sand in the Flora of Surrey. I make the 

 number of species 38, and four others are recorded, but I think only 

 occur on the Alluvium. I myself have found 22 species, most of 

 them on the Middle Bagshot, but I have seen a good many on both 

 Cpper and Lower Bagshot and tliey often extend on to the gravels. 



