ESSEX BOTANY AND MYCOLOGY GROUPS |
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Chara globularis/virgata (INTERMEDIATE)
TL(52) 92 |
905,264 |
19 |
Aldham, nr. Colchester, small pond in north east corner of Hoe Wood, in small quantity with C. vulgaris. Cortex with prominent primary rows giving ribbed appearance to axes, spine cells not developed into spines, stipulodes - single row of hemispherical bumps. Thus intermediate between C. globularis and C. virgata but closer to C. globularis. Coll: 19 May 2003. Peter &Pamela Wilson. Det. and described: K.J.Adams. |
Chara virgata (Kutz.) R.D. Wood(=C. delicatula C.A. Ag. non Desv. Including C. delicatula var. barbata (Gant.) J.Gr. & Bullock-Webster.) This variety of C. globularis used to be regarded as a separate species, C. delicatula, but apparently intergrades with var. globularis, Moore et al (1986), although Stewart & Church (1992) still regard it as a good species. Its two secondary rows are distinctly narrower than the more prominent primary row, and its stipulodes and spine cells are usually more obviously developed. As the two are said to intergrade, however, some material may be intermediate. Since the relative development of the cortical rows is used as the main empirically defining character, all specimens will fit neatly into one variety or the other! It is important to observe the mature axial segments for this character, however, as in the younger segments the secondary rows may start off being narrower. |
TQ/TL(51/52) 69/60 |
??????? |
18 |
Stock, as Chara delicatula var.. barbata (Gant.) .Gr. & Bull.-Webst., near Chelmsford, June 1893, Coll: E S Salmon, Det: Henry Groves. |
Natural History Museum Herbarium (BM). Atlas Specimen. Nos. 672. Groves & Groves 1895. |
TQ(51) 48 |
??? |
18 |
Lake nr. Wanstead. Undated ex herb. E Forster. (originally as C. pulchella hedwigii[=C. globularis], redet. by N E Stuart). |
Natural History Museum herb.(BM). |
TQ(51) 88 |
852,857 |
18 |
Leigh-on-Sea, small garden pond, (as C. delicatula C.A.Ag. non Desv.) July 1981, collected by John F.Skinner. Det: by K.J.Adams. |
Pickled material in Natural HistoryMuseum Herbarium (BM) and the Southend Central Museum Herbarium (STD). |
TL(52)51 | 576,162 | 19 | High Roothing C.P. New Hall Farm, south east reservoir, 4 August 2022. Collected: Martin Heywood. Det: Kenneth J. Adams. |