New Charophyte (Stonewort) and Bryophyte Records
KEN.ADAMS
School of Health and Biosciences, University of East London E15 4LZ.
Charophytes
The following records were added to the database during 2002.
Nitella flexilis/opaca
TL(52)52 558,255 19 Takeley, choking recently excavated linear pond on the west
side of East End Wood, growing with Chara globularis var.
globularis. April 2002. Shirley & Charles Watson.
Nitella translucens
TQ(51)49 418,984 18 Epping Forest, Wake Valley Pond West, present in huge quantities
throughout the water column, sterile. August 2002. The third
year running that this species has been abundant in the pond
(though apparently absent in 2003). Ken Adams.
Chara vulgaris agg.
TQ(51 )49 470,932 18 Hainault Forest, abundant, Roe's Well pond, with antherida and
oogonia, exhibiting the longibracteata expression. 8 August
2002. Brian Ecott, det; Ken Adams [from computer scan
image!] Material collected in February 2003 from the same pond,
was well grown and bright green, but sterile, with equally
developed primary and secondary cortex rows, and spine cells
either vestigial or at the most small papillae, - coming within the
range of the vulgaris expression, [by May 2003 the population
had reverted to the longibracteata expression, and was growing
with rafts of the alga Rhizoclonium hieroglyphicum. Ken Adams.]
TQ(51)58 576,843 18 Manor Farm fishing lake (old gravel workings), Upminster.
Abundant, shallows along western side. Exhibiting the
longbracteata expression, but spine cells very small and supine.
Oogonia and antherida present. 18 July 2002. Coll: Mary Smith
Det: KenAdams.
TL(52)60 610,045 18 Norton Heath, abundant raft in shallow scrape at the Bupleurum
falcatum reserve. Plants exhibiting both longibracteata and
papillata expressions, spine cells both supine and pointing out
wards, and often longer than diameter of main axis. Oogonia
and antheridia present 17 June 2002. KenAdams.
Essex Naturalist (New Series) 20 (2003)
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