hf 
PECULIARITIES OF PLANT-DISTRIBUTION IN THE LEEDS DISTRICT. 69 
such places as old quarries, and veld have to be regarded as a denizen. 
Even on the millstone grit I have known itin one spot for many years 
spreading and esa ye well. Papaver Rheas and dubium are both 
P ‘ 
frequent, th ftenest in cornfields, the latter more sporadic 
more senciedee distributed. Papaver emone, from its 
preference for sandy soil, is almost unknown with us. The 
themum is restricted within our district to t ca- 
reous tracts, but is there common; the sa ay be said of Viola 
hirta. Viola odorata is somewhat pia but occurs on wa ge- 
r 
banks in several places, not confined to on soil. Arenaria serpyllifolia 
not so ee as in the The Stellarie are universally 
common, eve um is rather frequent, and Alchemilla arvensis, 
Scleranthus annuus, & means scarce. None of the Mallows 
b 
are very abundant, sy ym all occur both on and off the limestone, 
M. rotundifolia always near farmhouses, Jf, moschata in hedges or on 
sandy river-banks, and If. sylvestris on waste ground. Acer campestre 
is frequent as a small hedgerow tree loving the sandstone, in com- 
pany with the broom, the wild cherry, and Viburnum Opulus ; 
whilst in Cornus sanguinea we have a sub-xerophilous shrub common 
our magnesian districts, with the privet and ELuonymus europaeus 
for associates; the latter, however, rarely ripening its pease ong the 
yellow-flowered Umbelliferee, Silaus is frequent in connection 
Agrimonia and both the Pimpinellas ; and Pastinaca coaicanl with 
Carduus eriophorus on the limestone. Conium, without showing any 
culus arvensis is plentiful on the limestone with C. sepium, and with- 
out the latter scarcely less common even in n the coal districts. Of the 
Labiates, Mentha aquatica A ee Thymus, Stachys coryen 
quent occurrence. Three ae Ce Origanum, and naeiaie 
Clinopodium are confined to the limestone, but common there ; and 
esa Cataria, Calamintha efeinalts or and Acinos occur in one or two 
ots on the same tract. Lamium album is not to be called common, 
still sca. to te written rare “Abdo I can call to mind far more 
stations sate S, Galeobdolon. The cowslip is ‘plentiful, and the prim- 
rose abundant on the limestone, though on the sandstone it occurs 
he lime- 
only sparingly, and then in bushy boggy placts mostly, Ont 
the, sn Sl with the cowslip are exceedin gly frequent. Plantago 
} with us almost as closely as 
Hordeum mur. 
one station only Sore) in which wee is plat, a this, too, off 
the limestone. Of the mural fern muraria occurs occa- 
7 On the magnesian limestone in 
um, 
Leeds in a wild state. They include one mural species— 
Cotyledon, occurring nowhere on gritstone walls I think ; one ge’ 
