Coed Allt Lan-las
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Habitats
Description
Description A semi-natural broadleaved woodland on a south-facing slope running down to the river Aeron. The canopy is mainly dominated by mature sessile oak Quercus Petraea with a good shrub understorey of hazel Corylus avellana, holly Ilex aquifolium, honeysuckle Lonicera periclymenum and bramble Rubus fruticosus agg. Towards its eastern extremity, due to the heavier clay soil, the woodland is rather more mixed, with ash Fraxinus excelsior and beech Fagus sylvatica, bearing a calcicolous ground flora of early-purple orchid Orchis mascula, dog's mercury Mercurialis perennis and primrose Primula vulgaris. Along the bottom of the slope wych elm Ulmus glabra and small-leaved lime Tilia cordata are locally abundant. This is an outstanding example of a mature sessile oakwood typical of those previously widespread throughout the southern half of Ceredigion.
Species mentioned
Show the 11 species mentioned in the description, with red-list status| English name search for this in other sites |
Latin name search with Google |
IUCN / Red List | Type | Family |
|---|---|---|---|---|
| honeysuckle | Lonicera periclymenum | LC | herb | caprifoliaceae |
| dog's mercury | Mercurialis perennis | LC | herb | euphorbiaceae |
| early purple orchid | Orchis mascula | LC | herb | orchidaceae |
| primrose | Primula vulgaris | LC | herb | primulaceae |
| bramble | Rubus fruticosus agg. | Not listed in GB list | herb | rosaceae |
| hazel | Corylus avellana | LC | tree | corylaceae |
| beech | Fagus sylvatica | LC | tree | fabiaceae |
| ash | Fraxinus excelsior | LC | tree | oleaceae |
| holly | Ilex aquifolium | LC | tree | aquifoliaceae |
| lime small leaved | Tilia cordata | LC | tree | malvaceae |
| wych elm | Ulmus glabra | LC | tree | ulmaceae |
Plant communities
A9 — Fast flowing river and stream, Marginal and inundation, Pond ditch and canal, Sluggish river and stream
Potamogeton natans community
Show 20 indicator speciesSchoenoplectus lacustris, Juncus bulbosus, Sparganium angustifolium, Sparganium erectum, Sparganium minimum, Alisma plantago-aquatica, Lobelia dortmanna, Equisetum fluviatile, Myriophyllum alterniflorum, Elodea canadensis, Lemna minor, Lemna trisulca, Nymphaea alba, Callitriche platycarpa, Callitriche stagnalis, Littorella uniflora, Potamogeton natans, Ranunculus trichophyllus, Glyceria fluitans, Chara subspinosa
A14 — Fast flowing river and stream
Myriophyllum alterniflorum community
Show 15 indicator speciesIsolepis fluitans, Juncus bulbosus, Fontinalis antipyretica, Lobelia dortmanna, Equisetum fluviatile, Myriophyllum alterniflorum, Lemna minor, Callitriche stagnalis, Littorella uniflora, Potamogeton filiformis, Potamogeton gramineus, Potamogeton natans, Ranunculus peltatus, Chara spp., Nitella hyalina
A17 — Chalk river and stream, Fast flowing river and stream
Ranunculus penicillatus ssp. pseudofluitans community
Show 11 indicator speciesBerula erecta, Nasturtium officinale, Elodea canadensis, Lemna minor, Callitriche stagnalis, Veronica beccabunga, Polygonum amphibium, Polygonum hydropiper, Potamogeton crispus, Potamogeton pectinatus, Ranunculus penicillatus ssp. pseudofluitans
A18 — Fast flowing river and stream
Ranunculus fluitans community
Show 12 indicator speciesFontinalis antipyretica, Fontinalis squamosa var. curnowii, Myriophyllum alterniflorum, Myriophyllum spicatum, Elodea canadensis, Mentha aquatica, Lemna gibba, Lemna minor, Potamogeton perfoliatus, Ranunculus fluitans, Glyceria fluitans, Phalaris arundinacea