New Charophyte (Stonewort) and Bryophyte records and corrigenda
Chara hispida var. major
TL(52)51 540,196 19
Hatfield Forest, northern end of the decoy lake, with Chara
vulgaris, Potamogeton pectinatus and P. trichodes, 4 September
2000. Shirley & Charles Watson. C. hispida was first recorded
from this site in 1985, following enlargement of the decoy lake,
but it has been known from Hatfield Forest Make' since 1820].
The decoy lake was drained down and much of the putrid
sediment and detritus removed over the winter of 2000/2001
and it will be interesting to see whatsurvives and appears there
next year.
Bryophytes
There arc two errors to report for which the author apologises to Tim Pyner, and one additional
Vcl8 record.
Orthotrichum stramineum
TQ(51)58 516,858 I8
Dagenham, The Chase N.R., on elder. 24 April 1999. Tim Pyner.
This species was intended and not O. striatum as incorrectly
reported in Essex Naturalist 17: 58. O. striatum has yet to be
re-recorded for Vc 18 since it was exterminated by atmospheric
pollution early this century.
This spelling and not semerites as in Essex Naturalist 17: 58.
Asheldham, old gravel pits, forming large mats on damp gravelly
and sandy areas. 11 October 1987. Tim Pyner,
[This alien leafy liverwort is spreading rapidly in the south east
and a full account of its occurrence and distribution in Essex is
in preparation by Tim Pyner].
Lophocolea semiteres
19
TL(52)90 97-,01 18
Essex Naturalist (New Series) 18 (2001)
69