The Essex Naturalist
55
New Charophyte (Stonewort) and Bryophyte Records
K. J. Adams
Dept. Life Sciences, University of East London E15 4LZ.
Charophytes
The following records have heen added to the data base since publication of my
provisional list (Adams, 1997. The Stoneworts of Essex: An interim account in Essex
Naturalist 14: 115- 142).
Chara vulgaris var. longibracteata
TQ(51)98 927,856 18 Thorpe Bay, shallow pond by railway line, frequent in
drying shallows, male and female organs present,
spine cells short. 10 July 1998. Tim Pyner.
TL(52)43 454,371 19 Clavering, Ford End, small pond in field, With Chara
globularis var. globularis, [sterile with long bracteoles,
spines supine and up to 2x as long as width of spine
rows] 20 October 1997, Coll: Shirley Watson. Det:
K.J.Adams.
Chara vulgaris var. papillata
TQ(51)98 906,852 18 Southchurch, Thorpe Hall Golf Course, in small
911,853 ponds (dry previous summer), abundant, heavily
911,854 encrusted, male and female organs abundant. 21 July
911,856 1998. Tim Pyner. Southend Central Museum
Herbarium. (STD).
Chara globularis var. globularis
TL(52)43 454,371 19 Clavering, Ford End, small pond in field with Chara
vulgaris var. longibracteata, cortex rows more or less
equal in width, spine cells not developed, stipuloides
small hemispherical papillae. 20 October 1997, Coll:
Shirley Watson. Det: K.J.Adams.
Nitella mucronata var. mucronata
TL(52)41 448,115 19 R. Stort, with Elodea nuttallii, nr. Harlow Marsh, 1
August 1998. Charles Watson.
487,144 19 R. Stort, Sheering Mill Lock, retrieved by grapnel
from the central channel, plants with long pointed
mucronate terminal cells to the two-celled dactyls. 29
December 1997. Charles Watson.
491,171 19 R. Stort between Spellbrook Lock and Tednambury
Lock, 10 February 1998. Charles Watson.
Note: When this taxon was originally found in the River Stort, it had the typical
short, onion shaped terminal cell mucro. In the material that is turning up all along