The Essex Naturalist
129
TL(52)81 805,114 19 Hatfield Peverel, small agricultural reservoir, sterile,
21 Oct 1987. Coll: & det: Tim Pyner.
TQ(51)88 877,871 18 Prittlewell, Priory Park, recently cleared fishing pond,
frequent, oogonia abundant, 17 July 1988. Coll: &
det: Tim Pyner.
TQ(51)89 860,922 18 Hawkwell, old gravel pit by Magnolia Rd., recently-
cleared pond, frequent in deeper water, antheridia
and oogonia present, monoecious. 28 June 1996.
Coll: & det: Tim Pyner.
TQ(51)98 938,861 18 North Shoebury, Friar's Park, in flooded gravel pit,
frequent but rather decayed and tatty. Sterile. 6
December 1987. Coll: & det: Tim Pyner.
3e Chara vulgaris var. papillata Wallr, ex A. Braun
This variety has been variously defined, but in essence it is said to possess long
finger-like spine cells. Groves & Bullock-Webster (1922) and Moore (1986) agree in
their being deciduous, but differ in whether they should be sticking out, or recurved
and lying in the grooves. Guy Allen, on the other hand, says they can he both. The
difficulty arises from the fact that long spine cells often occur on plants which also
have very long bracteoles and adaxial bract cells. These are conveniently regarded as
'intermediates'. They could equally be independently assorting characters. Only a
survey of the frequency of the various combinations will allow us to see the true
picture. I have a suspicion that the very same plants may actually change their
morphology between the two states in response to subtle environmental changes as
the seasons progress.
TQ(51)48 ??????? 18 Between West Ham and the Thames, in the marshes
and ditches, c.1849. Edward Forster. Natural History
Museum Herbarium. Atlas Specimen No.1381.
41 ,81? 18 Beckton District Park, East Ham, 6 January. 1985.
Coll: Paul Kirby, det: K.J.Adams, (approaching this
variety).
TL(52)40 479,086 19 Harlow Common, the 'new' concrete margined pond,
choking the shallows, with long spine cells, abundantly
fertile, good material of the formerly recognised var.
refracta. 20 October 1985. Coll: & det: K.J.Adams.
TL(52)50 584,036 18 High Ongar, small pond, excavated in 1985 to
replace old pond destroyed by widening of the A414.
Opposite drive to Chevers Hall. Extensive, bright
fresh-green patches arising among extensive rafts of
dying C. vulgaris var. longibracteata, fruiting, spine
cells very long and numerous. 23 Nov. 1986. Coll: &
det: K.J.Adams.