THE ANKER VALLEY AND ITS FLORA. 
89 
NOTES ON THE ANKER VALLEY AND ITS FLORA. 
BY JAMES E. BAGNALL, A.L.S. 
(Concluded from page 73.) 
Iii the Anker Valley proper there are G61 flowering plants 
and twenty-two ferns and fern allies. In the Sence Valley, 
which forms part of the catchment basin of the Anker, Mr. 
F. T. Mott records G50 species, of which 120 have not at 
present been recorded from the Anker Valley proper, so that 
the total flora of the Anker basin will be 803 flowering plants, 
ferns, and fern allies. 
Classes of Citizenship.— These have been very ably 
defined by Mr. Hewett C. Watson in the “ Compendium of 
the Cybele Britannica.” Native. “Apparently an aboriginal 
British species, there being little or no reason for supposing 
it to have been first introduced into this island by human 
agency,” as examples, Corylus, Calluna, Beilis , Butomus. 
Denizen. “ Apparently wild, but liable to suspicion of having 
been introduced by human agency, whether by design or 
by accident,” .as examples, Chelidonium , Vinca , JEgopodium. 
Colonist. “A weed of cultivated land, or by roadsides, and 
seldom found except where cultivation exists,” as Ranunculus 
arvensis , Anthemis Cotula , Alopecurus agrestis. Alien species 
are those certainly or very probably of foreign origin, as Acer 
Pseudo-platanus , Sedum refiexum, Populus nigra. Casual 
species are chance stragglers from cultivation, such as are 
found on waste heaps, railway embankments, and sometimes 
in cultivated fields, as Trifolium hybridum , Medicago sativa, 
Melilotus arvensis. 
The 803 plants are divided as follows :— 
Natives . 724 
Denizens. 37 
Colonists. 25 
Aliens or Casuals. 17 
803 
Types of Distribution.— In making out the types of dis¬ 
tribution of the plants found in the Anker Valley, I have 
again had recourse to Mr. Watson’s able work, in which he 
gives six leading types of distribution, which may be briefly 
shown thus :— 
1. British type.—Species widely spread through S. M. N. 
Britain. 
2. English type.—Species chiefly seen in S. or S.M. Britain. 
3. Scottish type.—Species chiefly seen in N. or N.M. Britain. 
Intermediate type.—Species chiefly seen in Mid Britain. 
