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Rich, T.C.G. & Houston, L. 2006. Sorbus whiteana (Rosaceae), a new endemic tree from Britain. Watsonia 26, 1-7
Robertson, A. & Sydes, C. 2006. Sorbus pseudomeinichii, a new endemic Sorbus (Rosaceae) microspecies from Arran, Scotland. Watsonia 26, 9-14
Smith, C. & Ashton, P.A. 2006. Distinction between the sedges Carex vulpina L. and C. otrubae Podp. and the potential for identification of hybrids. Watsonia 26, 15-25
Foley, M.J.Y. 2006. Epitypification of Carex vulpina L. (Cyperaceae). Watsonia 26, 27-30
Dean, M. & Ashton, P.A. 2006. A reassessment of the distribution of Carex recta Boott (Cyperaceae) in the British Isles. Watsonia 26, 31-39
Smith, P.H. 2006. Changes in the floristic composition of sand-dune slacks over a twenty-year period. Watsonia 26, 41-49
Foley, M.J.Y. & Porter, M.S. 2006. Calamagrostis scotica (Druce) Druce (Poaceae), a Red Data Book Plant: its history, taxonomy, ecology and genetics. Watsonia 26, 51-55
Smith, P.H. 2006. Revisiting Juncus balticus Willd. in England. Watsonia 26, 57-65
Notes. Watsonia 26 (2006), 67-69
- An hystricean bramble (Rubus sp.) from inland Kincardineshire: listing by Babington, Rogers, Trail and Watson repudiated. D. Welch
- A simple genetic base for the spreading and appressed hair types in Anthyllis vulneraria L. (Fabaceae). T.C.G. Rich
Plant Records. Watsonia 26 (2006), 71-100
Obituaries. Watsonia 26 (2006), 101-103
- Derek Almey Ratcliffe (1929-2005)
- Richard Charles Palmer (1935-2005)
Lansdown, R.V. 2006. Notes on the water-starworts (Callitriche) recorded in Europe. Watsonia 26, 105-120
Squirrell, J., Hollingsworth, P.M., Sears, J., Banks, B., Ferry, B., De Graff, D. Th. 2006. Assessment of genetic diversity in populations of Crepis foetida L. (Asteraceae). Watsonia 26, 121-126
Shimwell, D.W. 2006. A Shoddy Tale: perspectives on the wool alien flora of West Yorkshire in the twenty-first century. Watsonia 26, 127-137
Rich, T.C.G. 2006. Conservation of Britain’s biodiversity: Hieracium riddelsdellii (Asteraceae), Riddelsdell’s Hawkweed. Watsonia 26, 139-144
Lansdown, R.V., Stewart, N.F., Kitchen, C. & Kitchen, M.A.R. 2006. The status and conservation of stoneworts (Characeae) in West Gloucestershire (v.c. 34) and North Somerset (v.c. 6). Watsonia 26, 145-169
Foley, M.J.Y. 2006. J.H. Penson: mystery man and mystery record. Watsonia 26, 171-178
Plant Records. Watsonia 26 (2006), 179–195
Obituaries. Watsonia 26 (2006), 197-211
- Franklyn Hugh Perring, by C.D. Preston & P.H. Oswald
- Joyce Lambert, by Martin George & Clive Jermy
- Richard Fitter, by Peter Marren
Sell, P.D. 2006. Obituary. Stuart Max Walters (1920-2005). Watsonia 26, (213-)215-227
Kadereit, J.W. & Westberg, E. 2007. Determinants of phylogeographic structure: a comparative study of seven coastal flowering plant species across their European range. Watsonia 26, 229-238
Gurney, M., Preston, C.D., Barrett, J. & Briggs, D. Hybridization between Oxlip Primula elatior (L.) Hill and Primrose P. vulgaris Hudson and the identification of their variable hybrid P. x digenea A. Kerner. Watsonia 26, 239-251
Preston, C.D. 2007. Which vascular plants are found at the northern or southern edges of their European range in the British Isles? Watsonia 26, 253-269
Pearman, D.A. 2007. ‘Far from any house’ – assessing the status of doubtfully native species in the flora of the British Isles. Watsonia 26, 271-290
Walker, K.J. 2007. The last thirty five years: recent changes in the flora of the British Isles. Watsonia 26, 291-302
Beecroft, R.C., Cadbury, C.J. & Mountford, J.O. 2007. Water Germander Teucrium scordium L. in Cambridgeshire: back from the brink of extinction. Watsonia 26, 303-316
Swan, G.A. & Richards, A.J. 2007. The Eleocharis mamillata H. Lindb. fil. aggregate (Cyperaceae) in the British Isles. Watsonia 26, 317-325
Middleton, R. & Middleton, J.R. 2007. The University of Hull Herbarium. Watsonia 26, 327-338
Page, C.N., McHaffie, H. & Butler, J.K. 2007. A new far northern hybrid horsetail from Scotland: Equisetum x mchaffieae C. N. Page (Equisetum fluviatile L. x E. pratense Ehrh.). Watsonia 26, 339-345
Granados, L. & Lane, S.D. 2007. A fine scale study of selected environmental and floristic parameters in three populations of Euphrasia vigursii (Davey), a rare annual endemic to Devon and Cornwall. Watsonia 26, 347-358
Pashley, C.H., Bailey, J.P. & Ferris, C. 2007. Clonal diversity in British populations of the alien invasive Giant Knotweed, Fallopia sachalinensis (F. Schmidt) Ronse Decraene, in the context of European and Japanese plants. Watsonia 26, 359-371
El-Bakatoushi, R., Richards, A.J. & Wolff, K. 2007. Introgression between Plantago major L. subspecies major and subspecies intermedia (Gilib.) Lange. in a British population. Watsonia 26, 373-379
Tennant, D.JH. 2007. Names and diagnoses for three willow (Salix L.) hybrids discovered recently in Scotland. Watsonia 26, 381-383
Notes. Watsonia 26 (2007), 385-389
- The Gunna (v.c. 103) record for Carex appropinquata Schum. (Cyperaceae). M.J.Y. Foley
- Valerianella eriocarpa Desv. as a presumed native in Britain - an update. D.A. Pearman & B. Edwards.
- Rubus milesianus wholly a garden escape in Britain? D.E. Allen.
Plant Records. Watsonia 26 (2007), 391-407
Book Reviews. Watsonia 26 (2007), 409-415
Obituary. Watsonia 26 (2007), 417-418
- Larch Sylvia Garrad (1936-2005), by David Allen
Price, D.T. & Rich, T.C.G. 2007. One-way introgressive hybridisation between Sorbus aria and S. torminalis (Rosaceae) in southern Britain. Watsonia 26, 419-432
Codd, R.B. & Rich, T.C.G. 2007. Variation in Asperula cynanchica L. (Rubiaceae) in the British Isles. Watsonia 26, 433-442
Slade, K. & Rich, T.C.G. 2007. Pollen studies in British Hieracium sect. Alpina (Asteraceae). Watsonia 26, 443-450
Rich, T.C.G., Edwards, B. & Pearman, D.A. 2007. Hieracium portlandicum (Asteraceae), a new endemic hawkweed from the Isle of Portland, England related to Hieracium leyanum. Watsonia 26, 451-461
Rich, T.C.G. & Smith, P.A. 2007. Conservation of Britain’s biodiversity: Hieracium cacuminum, Summit Hawkweed (Asteraceae). Watsonia 26, 463-468
Kitchener, G.D. 2007. Rumex patientia L. x R. conglomeratus Murray, a newly described dock hybrid. Watsonia 26, 469-472
Rumsey, F.J. 2007. A reconsideration of Orobanche maritima Pugsley (Orobanchaceae) and related taxa in southern England and the Channel Islands. Watsonia 26, 473-476
Rumsey, F.J. 2007. An overlooked boreal clubmoss Lycopodium lagopus (Laest. ex Hartm.) Zinserl. ex Kusen. (Lycopodiaceae) in Britain. Watsonia 26, 477-480
Margetts, L.J. 2007. A new species of Taraxacum Wigg. (Asteraceae) from south-west England and Ireland. Watsonia 26, 481-484
Notes. Watsonia 26 (2007), 485-491
- A fourth list of British species of Rubus L. (Rosaceae) in north-west France. D.E. Allen
- Erica x williamsii Druce (E. tetralix L. x vagans L.): a note of typification. E.C. Nelson
- An early specimen of Cystopteris diaphana (Bory) Blasdell supports its native status. F.J. Rumsey
- The British endemic Hieracium cambricogothicum (Asteraceae) is probably extinct. T.C.G. Rich, J. Sawtschuk & I.P. Green.
Plant Records. Watsonia 26 (2007), 493-510
Obituaries. Watsonia 26 (2007), 511-526
- Vera Gordon (1918-2006), by David Allen
- Robert Allan Finch (1939-2006), by C.D. Preston
- Francis Rose (1921-2006), by David Streeter
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