Rare Plant Register for Huntingdonshire - Botanical Society of the ...
Rare Plant Register for Huntingdonshire - Botanical Society of the ... Rare Plant Register for Huntingdonshire - Botanical Society of the ...
Torilis arvensis (Huds.) Link Spreading Hedge-parsley National Status: Nationally Scarce, Endangered, BAP County Status: Rare (1 site, 1 tetrad) Site Grid Reference Last Record Sawtry Fen TL18W 2004 (TW) A very rare species of arable farmland. This species was formerly widespread in southern and eastern England but has undergone a marked decline as a result of increases in nitrogen applications to competitive modern crops. It is also late fruiting and may have been disadvantaged by recent trends for the earlier harvesting of crops (as a result of the breeding of new crop cultivars) and the consequent earlier tilling of farmland. It may also be susceptible to herbicides (Wilson & King, 2003). An unsuccessful search was made for this species on Sawtry Fen in 2011. [Torilis nodosa (L.) Gaertn. Knotted Hedge-parsley. The number of sites now exceeds the criteria for County Scarce status, removed from the Register in 2012.] Trifolium ochroleucon Huds. Sulphur Clover National Status: Nationally Scarce, Near Threatened County Status: Not scarce (11 sites, 12 tetrads) Site Grid Reference Last Record Brampton Racecourse SSSI TL203720 80 TL204719 2007 (KW) 2007 (KW) Grafham Water TL170666 2007 (KW) Great Paxton to Gransden, Protected Road Verge TL216652 2007 (KW) Kimbolton Airfield TL109694 2011 (BD) Midloe Grange Farm, Horse Paddock TL162647 2007 (KW) Stocking Lane Protected Road Verge TL123695 2010 (BD) Tilbrook Hill (VC30) TL085698 2007 (KW) Upwood Meadows SSSI, Bentley Meadow TL251827 2008 (DB) Woodwalton Marsh SSSI TL212812 2007 (KW) Woodwalton Hill TL210800 2007 (KW) Woolley Hill TL148730 2007 (KW) This is a species of calcareous boulder clay soils. It can be found in old pastures and in association with old trackways, railway embankments and roadside verges. The latter niche is probably the one where colonies are at greatest risk of being destroyed e.g. as a result of realignment works, the installation of utilities and inappropriate management (Stewart et al. 1994).
Trifolium striatum L. Knotted Clover National Status: Not scarce, not threatened County Status: Rare (3 sites, 3 tetrads) Site Grid Reference Last Record Conington ‘Dump’ TL202840 2009 (SL) Ferry Meadows Country Park (CP) TL145975 1998 (TD) Paxton Pits Nature Reserve TL199627 2000 (RE) This species shows an affinity for old gravel pit complexes where the shallow, mineral-rich soils and sparse vegetation provide suitable niches. Triglochin palustris L. Marsh Arrowgrass National Status: Not scarce, not threatened County Status: Rare (2 sites, 2 tetrads) Site Grid Reference Last Record St Neots Common SSSI, Lammas Meadow TL181612 2009 (DB) Woodwalton Fen SSSI & SAC, Compartment 37 81 TL23118518 2010 (MM) This is a very rare species in Huntingdonshire. The only other known site was a flood meadow at Water Newton where it was last recorded in 1968. Urtica dioica L. ssp. galeopsifolia (Wierzb. ex Opiz) Chrtek Fen Nettle National Status: Data Deficient County Status: Rare (2 sites, 4 tetrads) Site Grid Reference Last Record Holme Fen SSSI TL1989 TL2088 Woodwalton Fen SSSI & SAC TL2282 (tetrad) TL2384 2007 (DB) 2009 (DB) 2007 (DB) 2007 (DB) This is the stingless taxon of fens and river banks. Visitors to Holme and Woodwalton Fen will have found it a refreshing change to wade through beds of nettle unmolested. Plants at Holme Fen are morphologically very variable, with widespread stingless forms that otherwise resemble ssp. dioica. These may indicate the presence of a hybrid swarm resulting from the mixing of the two subspecies as the fen has dried out over time. More research is needed.
- Page 32 and 33: 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 84 and 85: Utricularia vulgaris L. Greater Bla
- 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
Torilis arvensis (Huds.) Link<br />
Spreading Hedge-parsley<br />
National Status: Nationally Scarce,<br />
Endangered, BAP<br />
County Status: <strong>Rare</strong> (1 site, 1 tetrad)<br />
Site Grid Reference Last Record<br />
Sawtry Fen TL18W 2004 (TW)<br />
A very rare species <strong>of</strong> arable farmland. This species was <strong>for</strong>merly widespread in sou<strong>the</strong>rn and<br />
eastern England but has undergone a marked decline as a result <strong>of</strong> increases in nitrogen<br />
applications to competitive modern crops. It is also late fruiting and may have been<br />
disadvantaged by recent trends <strong>for</strong> <strong>the</strong> earlier harvesting <strong>of</strong> crops (as a result <strong>of</strong> <strong>the</strong> breeding<br />
<strong>of</strong> new crop cultivars) and <strong>the</strong> consequent earlier tilling <strong>of</strong> farmland. It may also be susceptible<br />
to herbicides (Wilson & King, 2003). An unsuccessful search was made <strong>for</strong> this species on<br />
Sawtry Fen in 2011.<br />
[Torilis nodosa (L.) Gaertn. Knotted Hedge-parsley. The number <strong>of</strong> sites now exceeds <strong>the</strong><br />
criteria <strong>for</strong> County Scarce status, removed from <strong>the</strong> <strong>Register</strong> in 2012.]<br />
Trifolium ochroleucon Huds.<br />
Sulphur Clover<br />
National Status: Nationally Scarce, Near<br />
Threatened<br />
County Status: Not scarce (11 sites, 12 tetrads)<br />
Site Grid Reference Last Record<br />
Brampton Racecourse SSSI TL203720<br />
80<br />
TL204719<br />
2007 (KW)<br />
2007 (KW)<br />
Grafham Water TL170666 2007 (KW)<br />
Great Paxton to Gransden, Protected Road<br />
Verge<br />
TL216652 2007 (KW)<br />
Kimbolton Airfield TL109694 2011 (BD)<br />
Midloe Grange Farm, Horse Paddock TL162647 2007 (KW)<br />
Stocking Lane Protected Road Verge TL123695 2010 (BD)<br />
Tilbrook Hill (VC30) TL085698 2007 (KW)<br />
Upwood Meadows SSSI, Bentley Meadow TL251827 2008 (DB)<br />
Woodwalton Marsh SSSI TL212812 2007 (KW)<br />
Woodwalton Hill TL210800 2007 (KW)<br />
Woolley Hill TL148730 2007 (KW)<br />
This is a species <strong>of</strong> calcareous boulder clay soils. It can be found in old pastures and in<br />
association with old trackways, railway embankments and roadside verges. The latter niche is<br />
probably <strong>the</strong> one where colonies are at greatest risk <strong>of</strong> being destroyed e.g. as a result <strong>of</strong><br />
realignment works, <strong>the</strong> installation <strong>of</strong> utilities and inappropriate management (Stewart et al.<br />
1994).
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