Commons near Croydon, and their Flora. 7 
Keston Common, but though, of course, I did not disturb it, I 
have not seen it there since. Mr. Beeby suggests that it may 
have been planted, as Pinguicula is not known to grow elsewhere 
in this part of the country. I also found there a specimen of 
the white mullein (Verbasewm Lychnitis), usually a plant of the 
chalk. 
Mitrcpam Common.—Area 480 acres; altitude 80-112 ft.; is 
flat and low lying, resting on the alluvial gravels of the Wandle 
valley. It is perhaps the least picturesque of the commons in 
this neighbourhood, being covered with stunted gorse bushes, 
while part of it has been excavated for gravel. Several interesting 
dwarf plants, however, grow there, as T'rigonella ornithopodioides 
and Limosella aquatica. 
Wiwsitepon Common with Purney Heara.—Area 1000 acres ; 
altitude 30-180 ft.; is on a plateau of gravel, resting on London 
Clay. The higher part is peaty, and the smaller sundew (Drosera 
intermedia) formerly grew there. 
Worms Heara.—Area 37 acres; altitude 700-800 ft.; is on 
an outlier of Oldhaven pebble gravel, which contains masses of 
hard ferruginous conglomerate. 
Fartry GREEN (area 20 acres; altitude 540- 570 ft.) and 
Kentry Common (area 77 acres; altitude about 550 ft.) are 
situated on the clay-with-flints, over the chalk; and their flora, 
as is usually the case on clayey tracts, presents, so far as I have 
seen, no very noticeable feature. 
RIDDLESDOWN. ; altitude 240-420 ft. 
FartHine Donne —Area 100 acres; altitude 400-500 ft. 
Park Down.—Area 77 acres; altitude 400-500 ft. 
BanstEaD Downs.—Area 400 acres; altitude 300-450 ft. 
Ersom Downs.—Area 430 acres; altitude 350-500 ft. 
These are all on the chalk, and their flora has the general 
character before described. The white mullein (Verbascum 
Lychnitis) grows at Riddlesdown, and the sweet briar (Rosa 
rubiginosa) at Epsom Downs. At the last mentioned place a 
little ling grows, a rare occurrence, as the heaths usually shun 
a calcareous soil; but probably at this spot the chalk is more or 
less covered by some superficial bed. 
A more careful investigation of the flora of these commons 
than I have yet made might be expected to yield interesting 
results, and this is the work which I propose for the Club. 
Each common should be visited several times a year, London 
Catalogue in hand, and all the species observed within the limits 
open to the public should be marked, common as well as rare 
ones. The.cryptogams should if possible be recorded as well as 
the flowering plants. The help of all members of the Club is 
invited, and the Botanical Sub-Committee would be happy to 
render assistance in naming doubtful finds, 
