358 THE JOURNAL OF BOTANY 
ever found, in the county, e.g. Andromeda; as well as others 
which have only been recorded for the neighbouring counties, 
e.g. Isatis, Epipogium, Aig tenuis; undoubted errors, e. g. 
Senecio paludosus “by the roadside,” Soehiearsa grenlandica, 
Helianthemum_polifolium, bangs &e. very dubiously 
belonging to Worcester, e.g. Anemone ‘Pulsatilla and Thlaspe 
ee ara and even purely alien species, e. g. Azo 
e sake of comparison I have made the following com- 
patation ; but it must be cag in ‘mind that the standard of 
species now is more generous than n Mr. Bagnall published 
po th pes of Warwickshire, Paigeeioe the gHee for that county are 
taken 
Worcester. Warwick. 
Natives and Denizens ... 898 859 
olonists 60 46 
Extinct species ............ 39 
997 905 
Aliens and Casuals. ...... 145 50 
Errors 36 
Ambiguities ............... 14 18 
1192 1073 
In the Flora of ee bes 903 species of natives, colonists, and 
denizens are number the same standard of values were 
used in each case oo ‘dona probably ant be great sipeeuis in 
the numbers of the ne Assia: ors certainly include 
many phy which come very doubtfully in ee category assienee 
them, e. g. Bupleurum risen is called a colonist, Atropa 
‘denizen ; *‘casual’’ would surely better athe the first, 
“alien” the poo since it is evidently only an introduction, 
even if remotel 
The three abet specially connected with the county are 
e 
drainage and cultivation are the chief factors which have led to 
the disappearance of the two species of Elatine, a cog elodes, 
Lathyrus palustris, Cervicina hederacea, Vaccinium Vitis-idea, 
Oxycoceus, Asarum, Eriophorum vaginatum, Ane ium viride, 
Cryptogramme crispa, Cystopteris, Phegopteris Robertiana, P. poly- 
podioides, and Osmunda. The extinctions and errors are in most 
cases enclosed in brackets in the Botany. Under Phegopteris 
Robertiana it is stated ‘true calcarea has yet to be found in the 
county,” but in Top. Bot. that is ies for “37 Worcester. 
niceties and intricacies of hont enclature do not appeal to 
the is eng in fact, they appear to amis them, see note (p. 367) 
