The Essex Naturalist 11
Reports from the Club's Recorders
The following are the un-refereed reports of the Essex Field Club's Recorders. It
will be observed that there is considerable lack of uniformity in these
contributions to the journal and this requires explanation. The Essex Naturalist
ceased publication as a paper-carrying journal in 1976. The new series of the
journal, produced from 1977 to 1995, was a series of monographic publications
and this provided no place for annual reports from Recorders. With this volume,
however, the monograph series ceases but so many years have elapsed without
Recorders' Reports that uniformity in their presentation was a virtual
impossibility; it has been an editorial decision that this should be the case. It is
hoped that future issues of this journal will carry rather more standardised
annual reports from all of the Club's Recorders.
Some algae from Hatfield Forest new to the Essex records
J H Belcher and E M F Swale
23 Pepys Way, Girton. Cambridge CB3 OPA
Water samples collected from the lakes of Hatfield Forest (grid reference
TL540198) on 17th October 1995 contained many species of planktonic algae.
These are listed below, of which only a minority appeared in previous records for
Essex, namely Cooke's from Snaresbrook (1893), Scourfield's from Epping Forest
(1944) and those of Swale & Belcher from the River Lee (1962), here
abbreviated to (C), (Sc) and (S & B). A few more records from these lakes from
collections we made in 1979 have also been added. The numerous species of
diatoms are not listed.
Chlorophyceae, Volvocales (nomenclature
follows HuberPestalozzi 1961)
Lobomonas rostrata Hazen (S & B 1962)
Phacotus lenticularis (Ehr.) Stein
Chlorophyceae, Chlorococcales
(nomenclature follows Komarek & Fott
1983)
[Ankistrodesmus acicularis] -
see Monoraphidium komarkovae
[A. angustus] - see Monoraphidium contortum
A. gracilis (Reinsch) Korsh.
[A. rotundus] - see Kirchneriella rotunda
Chodatella ciliata (Lagerh.) Lemm.
(coll. S & B 1979)
Coelastrum microporum Naeg. (S & B 1962)
C. pseudomicroporum Korsh.
Crucigeniella apiculata (Lemm.) Korn.
Crucigenia tetrapedia (Kirchn.)
W. & G. S. West (Sc.1944)
Dicellula planktonica Svir.
Dictyosphaerium chlorelloides (Naum.)
Korn. & Perm.
D. ehrenbergianum Naeg.
D. pulchellum Wood (S & B 1944)
Kirchneriella lunaris (Kirchn.) Moeb.
(coll. S & B 1979)
K. rotunda (Korsh.) Hindak
Lagerheima genevensis (Chod.) Chod.
Monoraphidium contortum (Thur.) Kom.Legn.
(S & B 1962)
M. komarkovae Nyg.
Nephrochlamys subsolitaria (G. S. West)
Korsh.
Oocystis marssonii Lemm.
Pediastrum biradiatum Meyen
P. boryanum (Turp.) Meyen
P. duplex Meyen (coll. S & B 1979)
P. simplex Meyen var. sturmii (Reinsch)
Wolle