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BSBINews - BSBI Archive - Botanical Society of the British Isles

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18 Notes - Rare species at Barry Docks, Glamorgan (v.c.4l)<br />

Rare species at Barry Docks, Glamorgan (voc.4l)<br />

STEPHANIE J. TYLER, Yew Tree Cottage, Lone Lane, Penallt, Monmouthshire, NP254AJ<br />

TREVOR G. EVANS, La Cuesta, Mountain Road, Chepstow, Gwent, NP16 5BS<br />

Barry Docks in Glamorgan has long been by us on 29 th July 2008, on a grassy bank at<br />

known as an interesting site for native and ST127667 (see Colour Section, Plate 1). This<br />

alien species. SJT carried out fieldwork at pea is also local, with only two records from<br />

Barry Docks as part <strong>of</strong> an Environmental South Wales depicted in <strong>the</strong> National Atlas.<br />

Impact Assessment for a proposed develop- On 18 th June 2009 we noted <strong>the</strong> same patch in<br />

ment, mainly along <strong>the</strong> eastern harbour wall flower and two o<strong>the</strong>r patches nearby on <strong>the</strong><br />

and immediately inland <strong>of</strong> <strong>the</strong> seawall, bank along <strong>the</strong> access track. O<strong>the</strong>r aliens<br />

monthly between October 2007 and Septem- included two interesting grasses - Cynosurus<br />

ber 2008, and again from March 2009 until echinatus (Rough Dog's-tail), <strong>of</strong> which two<br />

September 2009. TGE accompanied SJT on patches were found along <strong>the</strong> breakwater<br />

three occasions. The harbour wall and break- track, and Anisantha madritensis (Compact<br />

water, in ST1266, support both maritime and Brome).<br />

calcareous grassland plants. This note reports Ruderal vegetation on banks <strong>of</strong> coal waste<br />

on some <strong>of</strong> <strong>the</strong> more interesting plants, was dominated by Lepidium draba (Hoary<br />

notably aliens, that were found. Cress) and L.latifolium (Dittander),Hirschfel-<br />

Stace (1991, 1997) noted that <strong>the</strong> only site in dia incana (Hoary Mustard) and Dipsacus<br />

Britain and Ireland for Echium rosulatum (Lax fullonum (Teasel), with occasional Diplotaxis<br />

Viper's-bugloss) was Barry Docks, where he tenuifolia (Perennial Wall-rocket). Extensive<br />

noted 'it may now be extinct'. In October areas <strong>of</strong> <strong>the</strong> breakwater bank have been<br />

2007 SJT found more than 50 plants, many colonised by Rubus spp. (brambles),Buddleja<br />

still flowering, along <strong>the</strong> harbour wall track davidii (Butterfly-bush), Clematis vitalba<br />

and <strong>the</strong> track running from a container yard (Wild Clematis) and o<strong>the</strong>r shrubs, much<br />

along <strong>the</strong> eastern edge <strong>of</strong> <strong>the</strong> harbour to <strong>the</strong> sea restricting <strong>the</strong> grassland track at <strong>the</strong> base. Five<br />

wall. In 2008 a similar number <strong>of</strong> plants was clumps <strong>of</strong> Helleborus foetidus (Stinking<br />

found. On 12th June 2009 SJT counted 35 Hellebore) were found on <strong>the</strong> bank.<br />

plants in 30m <strong>of</strong> <strong>the</strong> outer harbour wall and The calcareous grassland, restricted to a<br />

ano<strong>the</strong>r 15 plants in c.l20m along <strong>the</strong> access narrow strip between <strong>the</strong> sea wall and coal tip,<br />

track on <strong>the</strong> eastern edge <strong>of</strong> <strong>the</strong> harbour. supported a wide range <strong>of</strong> native plants, such<br />

There were also several plants on <strong>the</strong> seaward as Centaurea scabiosa (Greater Knapweed)<br />

side <strong>of</strong> <strong>the</strong> tip face and three plants behind <strong>the</strong> and C. nigra (Common Knapweed), Centautip<br />

face inland <strong>of</strong> <strong>the</strong> sea wall. At least three rium erythraea (Common Centaury), Blackplants<br />

were also seen in 2009 along <strong>the</strong> stoniaperfoliata(Yellow-wort),Linumbienne<br />

entrance road to <strong>the</strong> docks (see Colour (Pale Flax), Daucus carota (Wild Carrot) and<br />

Section, Plate 1). Spiran<strong>the</strong>s spiralis (Autumn Lady's-tresses),<br />

Reseda alba (White Mignonette) was quite along with taller species such as Tanacetum<br />

frequent in rocks and on soil just behind <strong>the</strong> vulgare (Tansy), Senecio jacobaea (Ragwort),<br />

sea wall from <strong>the</strong> harbour entrance eastwards S. erucifolius (Hoary Ragwort), Foeniculum<br />

to <strong>the</strong> edge <strong>of</strong> <strong>the</strong> docks, and it was abundant vulgare (Fennel), Picris hieracioides<br />

on banks <strong>of</strong> <strong>the</strong> coal tip and on piles <strong>of</strong> rubble. (Hawkweed Ox-tongue) and P. echioides<br />

At least 12 plants were found in 2007 along (Prickly Ox-tongue). Alien species, such as<br />

<strong>the</strong> sea wall, whilst in 2009 <strong>the</strong> count exceeded Securigera varia (Crown Vetch) and<br />

20 plants. Flowers were evident as early as 1 st Medicago falcata (Sickle Medick), were also<br />

March 2009 (see Colour Section, Plate 1). present.<br />

A large patch (3x2m) <strong>of</strong> Lathyrus tuberosus The maritime influence was evident in <strong>the</strong><br />

(Tuberous or Fyfield Pea) was found in flower flora by <strong>the</strong> presence <strong>of</strong> Trifolium squamosum

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