SHORT NOTES 99 
a considerable amount of mycorrhiza, and it is probably through 
this medium that the nutrition from humus and its derivatives is 
absorbed. From certain points on the root-system the flowering- 
stem arises, and year by year the tuft changed its position. The 
or vice-county is not so easily detected. The following short 
notes, selected at random from my store, will illustrate what I 
Anagallis arvensis is a most widely distributed species, 
but H. C. Watson rightly characterized it as ‘a casual colonist, 
or, as I prefer to class it, as an extra-areal follower of cultivation. 
It is a most uncertain species, too. The wet seasons before 1893 
practically exterminated it on the varying soils found in the water- 
shed of Cadney Beck, Lincolnshire, which range from the stiffest 
clay, like Kimmeridge, to blown sand, peat, and their mixtures. 
Even in the dry season of 1893 the only plants I could find were 
on the freshwater alluvium of the dry beck, where they were 
undoubtedly “ water-carried.” I wrote in The Naturalist, 1894, 
by the edge of roadsides, all over the same waters in the 
to sudden and rapid multiplication on a variety of soil. Another 
species which the wet seasons before 1893 depleted almost to the 
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season, tells equally on other species. Humex mariiimus 18 & goo 
instance. If to rave any areal species, this surely is one. Till 
um -of 1893, it was recorded for eleven out of the 
t 1 tl 
eighteen botanical divisions of Lincolnshire. There can be little 
