Rare Plant Register for Huntingdonshire - Botanical Society of the ...

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Utricularia vulgaris L. Greater Bladderwort National Status: Not scarce, not threatened County Status: Rare (1 site, 1 tetrad) Site Grid Reference Last Record Darlows Farm (Great Fen Project) TL226858 2011 (PS) Woodwalton Fen SSSI & SAC TL231843 2010 (DB) This is probably also the identity of the luxuriant populations present in the dykes of Darlows Farm (Great Fen Project), but I am yet to see flowering material. Valeriana officinalis L. ssp. collina (Wallr.) Nyman Common Valerian National Status: Data Deficient County Status: Scarce (5 sites, 5 tetrads) Site Grid Reference Last Record Brampton Wood SSSI TL18167007 2010 (DB) Great Stukeley Railway Cutting SSSI TL2374 2010 (TC) Monks Wood SSSI TL20218012 2009 (DB) Woodwalton, railway at Green Lane Bridge TL21058135 2011 (DB) Woodwalton Fen SSSI & SAC TL23478522 2010 (DB) Ssp. collina is long established and very distinctive but was largely forgotten when the recording of infraspecific taxa fell out of fashion. It is very poorly known but the publication of descriptions in Stace (2010) and Sell & Murrell (2006) should hopefully start to rectify this and it is worth recognising that many continental botanists consider it to be a good species. Wells (2003) did not segregate the subspecies but identifies that the species occurs on woodland rides as well as in wetlands. Our woodland plants are undoubtedly attributable to ssp. collina, which is typical of boulder clay woodlands and calcareous grassland. While good data is lacking, having surveyed this subspecies rigorously for the last three years, I consider that in Huntingdonshire it will have a distribution comparable to Dipsacus pilosus and is probably at least as scarce if not more so. Unlike that species it appears to be intolerant of shade and has probably declined extensively as a result of poor woodland management. I could only find it on one ride in Monks Wood where it was locally abundant for no more than 20m. Woodland and grassland managers need to have their attention drawn to this subspecies as the distribution maps for the species do not adequately reflect the more restricted distribution of the subspecies (although they are probably representative of the distribution of our other subspecies, ssp. sambucifolia). Valerianella carinata Lois. Keel-fruited Cornsalad National Status: Not scarce, not threatened County Status: Rare (3 sites, 3 tetrads) Site Grid Reference Last Record Conington, roadside bank TL194869 2005 (WM) Huntingdon TL234718 2005 (KW) Peterborough, Woodbine Street (CP) TL190975 2010 (NC) 82
Perhaps overlooked or only a recent colonist. There are indications that it may be increasing nationally (Stace, 2010). Verbascum nigrum L. Dark Mullein National Status: Not scarce, not threatened County Status: Rare (1 site, 1 tetrad) Stibbington, near Toll Bar Spinney Stibbington, near A1 crossing over Nene Valley Railway Site Grid Reference Last Record 83 TL08839806 TL09049785 2010 (DB) 2010 (DB) This has always been rare and as a native population is restricted to the most calcareous soils in the far northwest of the county. Verbena officinalis L. Vervain National Status: Not scarce, not threatened County Status: Scarce (5 sites, 5 tetrads) Site Grid Reference Last Record Alconbury TL183765 2010 (MiB) Bluntisham, Berry Fen TL379743 2008 (JM) Norman Cross to Stilton cycle-path TL160905 2009 (DB) Offord D’Arcy, village shop TL218665 1997 (TW) Paxton Pits TL192634 2008 (DB) A species of arable margins, rough grassland and disturbed ground, particularly on calcareous soils. Veronica montana L. Wood Speedwell National Status: Not scarce, not threatened County Status: Scarce (5 sites, 7 tetrads) Site Grid Reference Last Record Aversley Wood SSSI TL15988161 TL16318183 TL162820 2008 (DB) 2010 (DB) 2008 (DB) Holland Wood TL239786 2003 (TW & SW) Raveley Wood Nature Reserve TL245818 2003 (TW & SW) Savage’s Spinney Nature Reserve TL13416921 2009 (DB) Wennington Wood TL246794 1996 (TW) An uncommon species of ancient woodland on the boulder clay. It may be under-recorded but probably not to the extent that it would no longer merit inclusion in the Register.
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Rare Plant Register for Huntingdons
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justification, however understandab
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The current accounts of charophyte
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8. The Species Accounts The species
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Orton Longueville Wood (CP) TL16079
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Conington Airfield TL178870 2005 (W
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Salome Wood TL12677788 2009 (DB & L
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Calluna vulgaris (L.) Hull Heather
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Carex divulsa Stokes ssp. divulsa G
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Carex panicea L. Carnation Sedge Na
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Carex viridula Michaux ssp. brachyr
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Centaurium pulchellum (SW.) Druce L
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Norman Cross Pits: East Pit Middle
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Cruciata laevipes Opiz. Crosswort N
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Dactylorhiza incarnata ssp. incarna
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e determined whether or not a self-
Page 34 and 35: A rare but locally abundant species
Page 36 and 37: Easton, Lodge Farm TL136696 2005 (B
Page 38 and 39: Frangula alnus Mill. Alder Buckthor
Page 40 and 41: Galium uliginosum L. Fen Bedstraw N
Page 42 and 43: Gymnocarpium dryopteris (L.) Newman
Page 44 and 45: This is a free-floating species tha
Page 46 and 47: Isolepis setacea (L.) R.Br. Bristle
Page 48 and 49: This species probably persists at a
Page 50 and 51: subspecies were not distinguished b
Page 52 and 53: Lythrum portula at Monks Wood SSSI
Page 54 and 55: Primula x digenea and Primula elati
Page 56 and 57: Lythrum portula (L.) D.A. Webb Wate
Page 58 and 59: Myosotis ramosissima Rochel Changin
Page 60 and 61: Nymphoides peltata Kuntze Fringed W
Page 62 and 63: Oenanthe silaifolia M. Bieb. Narrow
Page 64 and 65: Compartment 47 Compartment 39 62 TL
Page 66 and 67: Monks Wood, field south of TL194793
Page 68 and 69: occur on the VC31 side of the River
Page 70 and 71: natural woodlands. Where this speci
Page 72 and 73: Ranunculus sardous Crantz Hairy But
Page 74 and 75: Rubus percrispus D. Allen & R.D. Ra
Page 76 and 77: margins of rivers and lakes in mixe
Page 78 and 79: established well and has thrived. T
Page 80 and 81: Stellaria palustris Retz. Marsh Sti
Page 82 and 83: Torilis arvensis (Huds.) Link Sprea
Page 86 and 87: Veronica scutellata L. Marsh Speedw
Page 88 and 89: This species has always been rare i
Page 90 and 91: Appendix 1 Extinctions Many of the
Page 92 and 93: Wahlenbergia hederacea Ivy-leaved B
Page 94 and 95: Appendix 3 Additional Species Not Y
Page 96: Little Catworth, 9 Little Paxton, 3
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