The Flora Checklist
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THE FLORA CHECKLI ST OF NORTHAMPTONSHIRE AND THE SOKE OF PETERBOROUGH ROB WILSON 2014 1 A FLORA CHECKLIST OF NORTHAMPTONSHIRE & THE SOKE OF PETERBOROUGH : 2014 INTRODUCTION Neophyte The first edition of this checklist was published in 2008 as A naturalised plant believed to have been introduced into an aide to members of the Northamptonshire Flora Group the vice-county by man, after the year 1500 AD; it is who were recording the distribution of species for the considered to be naturalised if it maintains itself or forthcoming new Flora of Northamptonshire and the Soke increases year by year either by seed set or vegetative of Peterborough, due for publication in 2012 - 2013. It spread. was based on the species detailed in the 1995 Flora of Introduction Northamptonshire and the Soke of Peterborough. Recording for the projected new flora has brought to light An alien plant that has been deliberately introduced into a considerable number of species not previously found in the countryside or urban areas; included in this section the county. This has made it necessary to update the are trees that have been deliberately introduced and checklist. This edition contains all the species ever found which will survive for many years but will become extinct in the vice-county up to end of 2011. It is the intention to if not re-introduced. As a general rule trees in gardens keep this check-list updated and to post an updated have not been recorded although occasionally exceptions version on the BSBI web site at regular intervals. have been made for specimen trees of trees of some historic interest. The names in the checklist have been brought into line with those used in the third edition of the new Flora of Casual the British Isles (Stace 2010), but it also includes species, mainly garden escapes or casuals that no longer occur in An alien plant that has arrived accidently but cannot the British Isles, that are not included in this publication maintain itself by seed set or vegetative spread and and reference has been made to numerous other requires continual re-introduction to maintain its publications including various handbooks published by presence. It has not been deliberately introduced. It is the BSBI. The three columns in the table list the current highly likely that many of these ephemeral species have taxonomic name, followed by the Accepted English name been missed. and the status within the vice-county. The latter has split At the end of the main list are two Appendices that list into five categories: species that have been listed in print as present in Native Northamptonshire, but are now considered to be errors, and Rubus species that are listed in The Flora of A plant that has been growing in VC32, usually for many Northamptonshire (Druce 1930) for which I have been thousands of years, without being either accidentally or unable to trace the current taxonomy. intentionally introduced by man; it also includes naturally occurring hybrids even if the parents do not occur in the As this list is a work in progress, being continually vice-county. updated as new data becomes available; the author would be pleased to receive any comments or details of Archeophyte any additional species. A naturalised plant believed to have been introduced into ACKNOWLEDGMENTS the vice-county by man, before 1500 AD; it is considered to denaturalized if it maintains itself or increases itself My thanks are due to various botanists past and present, from year to year by seed set or vegetative spread. too numerous to mention individually, who have recorded the flora of this vice-county. Rob Wilson January 2014 Cover picture: Dropwort Filipendula Vulgaris at Barnack Hills and Holes. Above: Traveller’s-joy Clematis vitalba in a roadside hedge between Apethorpe and King’s Cliffe. (Rob Wilson) 2 TAXON COMMON NAME STATUS Abies alba Mill. European Silver-fir Introduction Abies grandis (Douglas ex D. Don) Lindl. Giant Fir Introduction Acaena novae-zelandiae Kirk Pirri-pirri-bur Casual Acer campestre L. Field Maple Native Acer capillipes Maxim. ex Miq. Red Snake-bark Maple Introduction Acer cappadocicum Gled. Cappadocian Maple Introduction Acer japonicum Thunb. Downy Japanese-maple Introduction Acer negundo L. Ashleaf Maple Introduction Acer palmatum Thunb. cv palmatum Smooth Japanese Maple Introduction Acer platanoides L. Norway Maple Introduction Acer pseudoplatanus L. Sycamore Introduction Acer saccharinum L. Silver Maple Introduction Acer villosum C. Presl. Mediterranean Sycamore Introduction Achillea millefolium L. Yarrow Native Achillea ptarmica L. Sneezewort Native Aconitum napellus L. Monk’s-hood Casual Acorus calamus L. Sweet-flag Neophyte Adiantum capillus-veneris L. Maidenhair Fern Casual Adonis annua L. Pheasant’s-eye Archeophyte Adoxa moschatellina L. Moschatel Native Aegopodium podagraria L. Ground-elder Archeophyte Aesculus carnea J. Zeyh. Red Horse-chestnut Introduction Aesculus flava Sol. Yellow Buckeye Introduction Aesculus hippocastanum L. Horse-chestnut Introduction Aesculus indica (Cambess.) Hook. Indian Horse-chestnut Introduction Aesculus turbinata Blume Japanese Horse-chestnut Introduction Aethusa cynapium ssp. agrestis (Wallr.) Dostál Fool's Parsley Archeophyte ssp. cynapium L. Native Agrimonia eupatoria L. Agrimony Native Agrimonia procera Wallr. Fragrant Agrimony Native Agrostemma githago L. Corncockle Archeophyte Agrostis canina L. Velvet Bent Native Agrostis capillaris L. Common Bent Native Agrostis gigantea Roth Black Bent Archeophyte Agrostis stolonifera L. Creeping Bent Native Agrostis vinealis Schreb. Brown Bent Native Ailanthus altissima (Mill.) Swingle Tree-of-heaven Introduction Aira caryophyllea L. Silver Hair-grass Native Aira praecox L. Early Hair-grass Native Ajuga chamaepitys (L.) Schreb. Ground-pine Native Ajuga reptans L. Bugle Native Alcea rosea L. Hollyhock Casual Alchemilla filicaulis ssp. vestita (Buser) M.E. Bradshaw Hairy Lady’s-mantle Native Alchemilla mollis (Buser) Rothm. Soft Lady’s-mantle Casual Alchemilla vulgaris agg. L. Lady’s-mantle Native Alchemilla xanthochlora Rothm. Pale Lady’s-mantle Native Alisma lanceolatum With. Narrow-leaved Water-plantain Native Alisma plantago-aquatica L. Water-plantain Native 3 Alliaria petiolata (M. Bieb.) Cavara & Grande Garlic Mustard Native Allium christophii Trautv. Star of Persia Casual Allium oleraceum L. Field garlic Native Allium paradoxum (M. Bieb.) G. Don Few-flowered Leek Casual Allium ursinum L. Ramsons Native Allium roseum L. Rosy Garlic Casual Allium vineale L. Wild Onion Native Alnus cordata (Loisel.) Duby Italian Alder Introduction Alnus glutinosa (L.) Gaertn. Alder Native Alnus incana (L.) Moench GreyAlder Introduction Alnus viridis (Chaix.) D. C. Green Alder Introduction Alnus x hybrida A Braun ex Rchb. Hybrid Alder Introduction Alopecurus aequalis Sobol. Orange Foxtail Native Alopecurus geniculatus L. Marsh Foxtail Native Alopecurus myosuroides Huds. Black-grass Aecheophyte Alopecurus pratensis L. Meadow Foxtail Native Alopecurus x brachystylus Peterm. Native Althaea officinalis L. Marsh-mallow Casual Alyssum alyssoides (L.) L. Small Alison Casual Amaranthus albus L. White Pigweed Casual Amaranthus capensis ssp.uncinatus (Thell.) Brennan Cape Pigweed Casual Amaranthus caudatus L. Love-lies-bleeding Casual Amaranthus cruentus L. Purple Amaranth Casual Amaranthus hybridus L. Green Amaranth Casual Amaranthus retroflexus L. Common Amaranth Casual Ambrosia artemisiifolia L. Ragweed Casual Amelanchier lamarckii F.G.Schroed. Juneberry Introduction Ammi majus L. Bullwort Casual Amsinckia lycopsoides Lehm. Scarce Fiddleneck Casual Amsinckia micrantha Suksd. Common Fiddleneck Casual Anacamptis morio (L.) R.M. Bateman, Pridgeom & M.W. Chase Green-winged Orchid Native Anacamptis pyramidalis (L.) Rich. Pyramidal Orchid Native Anagallis arvensis ssp. arvensis L. Scarlet Pimpernel Native ssp. foemina (Mill.) Schinz & Thell. Blue Pimpernel Archeophyte Anagallis tenella (L.) L. Bog Pimpernel Native Anchusa arvensis (L.) M. Bieb. Bugloss Archeophyte Anchusa officinalis L. Alkanet Casual Anemone apennina L. Blue Anemone Casual Anemone blanda Schott & Kotschy Balkan Anemone Casual Anemone nemorosa L. Wood Anemone Native Anemone ranunculoides L. Yellow Anemone Casual Anemone x hybrida Paxton L. Japanese Anemone Casual Anethum graveolens L. Dill Casual Angelica sylvestris L. Wild Angelica Native Anisantha diandra (Roth) Tutin ex Tzvelev Great Brome Casual Anisantha sterilis (L.) Nevski Barren Brome Archeophyte Antennaria dioica (L.) Gaertn. Mountain Everlasting Native Anthemis arvensis L. Corn Chamomile Archeophyte Anthemis cotula L. Stinking Chamomile Archeophyte 4 Anthemis tinctoria L. Yellow Chamomile Neophyte Anthoxanthum aristatum Boiss. Annual Vernal-grass Neophyte Anthoxanthum odoratum L. Sweet Vernal-grass Native Anthriscus caucalis M. Bieb. Bur Chervil Native Anthriscus sylvestris (L.) Hoffm. Cow Parsley Native Anthyllis vulneraria ssp. carpatica (Pant.) Nyman Kidney Vetch Casual ssp. vulneraria L. Native Antirrhinum majus L. Snapdragon Neophyte Apera interrupta (L.) P. Beauv. Dense Silky-bent Casual Apera spica-venti (L.) P. Beauv. Loose Silky-bent Casual Aphanes arvensis L. Parsley-piert Native Aphanes australis Rydb Slender Parsley-piert Native Apium graveolens L. Wild Celery Casual Apium inundatum (L.) Rchb. f. Lesser Marshwort Native Apium nodiflorum (L.) Lag. Fool’s-water-cress Native Apium x moorei (Syme) Druce Native Aponogeton distachyos L. f. Cape-pondweed Casual Aquilegia vulgaris L. Columbine Native Arabidopsis thaliana (L.) Heynh. Thale Cress Native