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The Essex Records 1820 -2007.

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?

Chara hispida (Hartm.) R.D.Wood

This, the largest of the C. hispida aggregate and the largest European species of Chara, is apparently rare in the Essex, and is only known to have persisted in the lake at Hatfield Forest, where it has been noted at intervals since c.1820. It reappeared in 1985 growing amongst considerable quantities of discarded, green nylon fishing line, that had accumulated in the decoy cut-off since it was enlarged, and since a pristine Chalky Boulder Clay bottom was exposed for it to colonise. As this robust species often occurs in large bodies of water elsewhere, we may be overlooking it in some of our larger fishing lakes and reservoirs on the Chalky Boulder Clay.

TQ(51)49

409,965

18

Fairmead Bomb Crater, C.H. Selby. 1954. "Some Aspects of Dispersal & Succession in some Epping Forest Ponds"(No specimen traced, only doubt is possibility of it being mistaken for Chara vulgaris var. papillata unless checked microscopically as habitat unlikely)..

London Nat. 34. p.128-141. 1955.
         

TL(52)51

54 ,19

19

Hatfield Forest Lake, 'very large and abundant', c. 1820. George S.Gibson.

Flora of Essex. p.407. 1862. and

 
 

54,19

19

Lake in Hatfield Forest, E.de Crespigny

A New London Flora. (1877).p.80
 

54 ,19

19

Hatfield Forest Lake, with C. globularis (as C. fragilis) and C. vulgaris, 10 Oct. 1890. W.Crouch.

Essex Naturalist. 4. p.223. 1890.
 

54 ,19

19

Hatfield Forest Lake, 1965. Coll: & det: Eric Saunders.

Flora of Essex. p.45. 1974.
 

540,196

19

Hatfield Forest, decoy lake, scattered plants, heavily encrusted, sloping shelf of west side, chalky boulder clay substrate, with C. globularis and C. vulgaris var. vulgaris, 20 Oct. 1985. Coll: & det: K.J.Adams.,

 
   

.ditto

a few plants still present with C. vulgaris var. vulgaris and var. longibracteata. 24 Sept. 1989 & 1990. K.J.Adams.

  
 

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 `lake' 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 what survives.

  
         

TL(52)53

525,382

19

Walden Park, in pond, c.1850. George S.Gibson..

Flora of Essex. p.407.1862
         

TL(52)81

???????

19

Inworth, c.1850. Dr Ezekiel G. Varenne.

Flora of Essex. p.407. 1862
         

TL(52)82

???????

19

Bradwell Common, 'in some water', 1820. Edward Forster. Ex. Herbarium of Edward Forster

Natural History Museum Herbarium (BM).Atlas Specimen No.890.