OF A CAMBRIDGESHIRE WOODLAND. 
97r 
od 
The following species, which might perhaps be expected in an Ash-Oak 
wood of the kind developed here on the calcareous clay, are quite absent : 
Lychnis dioica, apparently quite absent from the county * f. 
Ovalis Acetosella is very rare f in the county. 
Arenaria trinervia, local in woods in Cambridgeshire, occurs іп Borley 
Wood. 
Adoxa Mosehatellina, very тате in the county and quite absent from 
woods, in contrast to Somerset, 
Asperula odorata, recorded for the wood by Babington f ; but not found 
there now, apparently. 
Monotropa EHypopitys, found rarely in an Ash-Oak Wood т S.E. Cambs. 
Lysimachia nemorum, extinct or misrecorded for the county * $. 
Lithospermum officinale, found locally in other woods in W. Cambs., 
e. б. Hayley Wood. 
Melampyrum cristatum occurs in other Cambridgeshire Boulder Clay 
PY 5 \ 
Woods, e.g. Hayley Wood, usually on the outskirts. 
M. pratense is recorded from White Wood, three miles distant T. 
Daphne Laureola occurs in Hayley Wood. 
Kuphorbia amygdaloides occurs in S.E. Cambs. 
Neottia Nidus-aris occurs in Waresley Wood, less than three miles 
distant. 
Epipactis media, found locally in other woods in W. Cambs. 
Allium итятит occurs rarely in Hayley Wood and Eversden Wood. 
Colchicum autumnale, found rarely т S.E. Cambs. 
Carer pendula occurs in woods т S.E. Cambs. 
Lastrea Filiw-mas occurs sparingly in other woods on the Boulder Clay. 
In this wood Pteridophytes are entirely absent from the calcareous clay. 
This seems probably to be due to the droughts that occur in summer as much 
as anything else. Pteridophytes, however, are very sparsely represented in 
the county as a whole. 
A similar scarcity in species occurs among the mosses both in this wood 
and in the county ax a whole, as compared with other areas §. 
Comparison with other Cambridgeshire Woods. 
The area under woodland in the county is very small, smaller than in any 
other English county | 
more or less natural condition at the present day. 
Exeluding plantations, the woodlands are of three kinds : — 
* Watson, 1882. T Babington, 1860, p. 190. [ West, 1898, p. 247. 
$ Watson, 1900. || Hughes, 1909. 
LINN, JOURN, — BOTANY, VOL. XL. 2p 
; but а considerable quantity of what there is, is in a 
