The Essex Naturalist
123
Summary of Species Recorded for Essex
For this account, the numbering, nomenclature and order follow that of (Moore
et al, 1986). Problems with the taxonomy of individual taxa are discussed under
the separate accounts.
The Essex Records 1820 - 1997
Following the introductory paragraph to each taxon, the records are set out in
columns. The first being the letter and alternative number (in brackets) code for
the 100 x 100km square, followed by the 10 x 10km square number, arranged in
conventional order from south to north, moving from west to east; the second
column gives the 1 x 1km square or the 100 x 100m square Ordnance Survey
grid reference if known; the third the vice county, and the final column the
available details of the individual record. Approximate grid references for older
records are suffixed by a ?
3a Chara vulgaris L. var. vulgaris
This taxonomic category is generally used as a rag-bag for those forms that do
not approach the other named varieties. As far as our recent records are
concerned, we have included in var. longibracteata any forms with very long
bracteoles/adaxial bract cells (irrepective of spine cell length), and in var.
papillata those forms with very well developed cylindrical spines cells, but normal
length bracteoles. The formerly recognised var. refracta Kutz. (now sunk in var.
vulgaris) with short recurved branchlets, fruiting at virtually all the nodes, and
with well developed spine cells, has been seen on several occassions in Essex.
TQ(51)38 39,81? 18 Canning Town, 1891. William Allen. Essex
Naturalist. 10, p.190. 1897-8.
TL(52)30 37,02? 19 Fisher's Green, gravel pit ponds, c.1965. Eric
Saunders. Flora of Essex, p.45. 1974.