568 THE BOTANICAL EXCHANGE CLUB OF THE BRITISH ISLES. 
grow together one finds a series of intermediates, in which the colour 
of the petal- spots varies through all tints from faint pink to deep 
purple. These are not sterile, but are doubtless derived from hybrids 
that have been cross-fertilised by one or other of the parents, and the 
progeny influenced in like manner through successive generations. 
This process of promiscuous intermingling, long continued, would 
amply produce the gradations that exist; while, concurrently, at either 
end of the scale, those forms possessing the least tincture of hybridity 
would revert to their respective types.” — J. W. W. “According to my 
opinion this is only A. galiica, L., ^ quinqicevulnera^ Koch, therefore 
not a hybrid. The species itself, as well as S. quinquevulnera^ is very 
variable in the structure of the petals.” — -J. Freyn. 
Cerastium pumilum, Curt. Near Sandown, Isle of Wight, 1889. — 
Coll. Capt. Steuart; comm. J. A. Wheldon. “These specimens were 
sent me by the late Capt. Steuart. Some of them closely approach small 
forms of C. tetra/idru/n, the scarious margin of the bracts being hardly 
discernible; in others this character is better marked.” — J. A. W. 
C. arcticum, Lange, var. Edmondstonii, Beeby. Serpentine 
gravels, Unst, Shetland, 3ist August 1897 and 31st July 1898. — 
W. H. Beeby. “When I first gathered this plant in 1886 I brought 
home roots, and, being very desirous of growing it, also a bag of its 
native soil. Under these conditions it maintained the dark, purplish- 
copper colour of its foliage fairly well, until the plants were lost in a 
removal some few years later. In 1897 and 1898 I brought home 
seeds and roots, and have the plants growing this time not in their 
native soil, but in a mixture of Surrey soils. These plants have 
entirely lost their original colour, and have become completely green; 
so that it appears that the only character which separates this variety 
from the type is merely temporary and due to habitat. The serpentine 
gravels of Unst contain a number of minerals, notably chromate of iron, 
and the colour of the leaves may, probably, be due to the influence of 
one of them. The Cerastium is by no means the only plant growing 
on these hills which is affected in this way. J. M. Norman’s ‘U. 
latifolium'' is, of course, C. arcticum {C. latifolium proper not being 
known in Scandinavia or other boreal countries), consequently his 
reference of C. arcticum to a hybrid C. alpinum x C. latifolium is 
mythical.” — W. H. B. 
Arenaria serpyllifolia, Linn. Wall top on the road from Peebles 
to Niedpath Castle (altitude 550 feet), 30th September 1898. Not 
recorded for county 78 in ‘Topographical Botany,’ ed. 2, page 76. — 
Charles Bailev. 
A. serpyllifolia, L., var. Lloydii, Jord. St. Anne’s, W. Lancashire, 
8th July 1898. County record? — J. A. Wheldon. “Jordan described 
A. Lloydii as a species, ‘ Pugillus,’ p. 37 (1852). As a variety it 
should apparently stand as var. macrocarpa, Lloyd, ‘FI. Loire Inf,’ 
p. 42 (1844}. 
