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THE
FLORA OF LANGCLIFFE PARISH
The
flora of Langcliffe is special because of the uncommon and rare
plants that grow on limestone grassland, pavement and cliffs.
In
1660 the great botanist John Ray (1627-1706) visits Craven and in 1668 and 1671
he visits Settle and area. We don't
know whether he actually visits Langcliffe itself, but one of the plants he
discovers whilst in the area in 1668 is the Twisted Whitlow-grass, a tiny white
Crucifer with white flowers resembling Shepherd's Purse and with oval, twisted
seed pods. In 1671 he also finds
the Spring Sandwort 'on the mountains about Settle'.
One
third of a millennium later (1998) another famous botanist visits the parish.
He too is pleased to find the Twisted Whitlow-grass.
This is David Bellamy who has come to visit the
limestone pavement nature reserve Winskill Stones, newly bought by the
charity Plantlife. It enables him
to point out concerns about genetic modification of crops and tests currently
being organised by the government and the fact that members of the Crucifer
family (Cabbage family) can easily hybridise, so that genes introduced into the
crop plant Oil-seed Rape can spread into wild plants such as the Twisted
Whitlow-grass.
At
the same time a survey of all the wild flowers and ferns in Langcliffe Parish is
being undertaken. Judith Allinson
writes:
The
Langcliffe Millennium Project has been the incentive for myself and friends from
Craven Conservation Group to carry out a botanical survey of Langcliffe Parish,
on a 1 km square basis over the past year and a half.
I had already been surveying the area around Settle on a tetrad basis
(2km square) for about 6 years for Phyl Abbott's Survey of Vice-County 64 of
Yorkshire, (which stretches from Leeds to Burton in Lonsdale).
Data from her survey is being used in the Botanical Society of the
British Isles (BSBI) Atlas (on a 10km square basis) which is being produced to
mark the year 2000.
Time
has not allowed me to complete every single km square in detail.
Just last month (March 2000) I discovered the delightful Alternate-leaved
Golden-saxifrage, with its lobed kidney shaped leaves and tiny yellow green
flowers, growing, tucked away from sheep in some limestone pavement in one of
the highest areas of the parish, 480m above sea level.
However here is a summary of the results, which I feel
includes perhaps 90% of the plants to be found in Langcliffe Parish. 360
species of flowering plant and fern have been recorded in Langcliffe Parish so
far. (The total number of species in Britain is between 1800 and
2000, depending on how many aliens and species of Dandelion one includes).
There
are 7 Nationally Scarce Plants and 1 very rare plant (A Red Data Book species).
The Red Data Book plant is special type of Lady's Mantle, Alchemilla
glaucescens. These 8 rare
plants all grow on limestone grassland or screes or cliffs.
Nationally Scarce Plants as described in the JNCC book (1994)
'Scarce Plants in Britain' are plants which occur in Britain in
16 - 100 hectads (10 km squares).
52
of the 360 species are recorded in the 'Collins Pocket Guide to Wild Flowers' by
McClintock and Fitter (1956) as being in the one star (only locally common) or
two star (nationally scarce) categories. 14 are in
the latter category.
Maps
from the old BSBI Atlas (1976) will be available at the Langcliffe exhibition to
show the distribution nationally of some of these rarer plants, and to show how
important the Langcliffe area is for their survival.
Langcliffe
Parish covers about 11 km2 but includes parts of 19 km squares.
The data was used to plot the distribution of species in 16 of these
squares, and some of the distribution maps will be shown at the Langcliffe
Millennium exhibition.
Railways
and riversides are important habitats in a parish where there is such extensive
sheep grazing and so little woodland. 12
plants were found on the railway verges and nowhere else, and a good number of
other interesting plants were also found on the railway verges.
The railway verges are under-recorded due to access restrictions.
The riverside also supports ungrazed vegetation, as does the water
channel from The Locks down through Langcliffe Place Mill
to Watershed Mill.
Limestone
- a basic rock.
Before
talking about the flowers and ferns of Langcliffe Parish in detail, and their
habitats, we shall, since the bed rock for the major part of the parish is
limestone, have a few words about Limestone and how it affects the diversity of
plants.
Certain
plants grow well in soil that has a lot of lime.
They are known as calcicoles and include Thyme, Salad Burnet and Fairy
Flax. Other plants grow best where
there is a shortage of lime. They
are known as calcifuges and include Heather, Mat-grass and Bilberry.
Why
do plants grow better if lime is added to the soil?
Calcium
frees other nutrient metal ions from the soil and makes them available for the
plants. Plants need potassium and
magnesium to grow. But these metal
ions have positive charges and they are locked onto clay particles in the soil
which have negative charges. If
lime is added, the calcium ions then stick to the
clay particles, and the metal ions, which the plants need, are released.
Why
do some plants not grow well if there is too much lime?
The
mechanisms that certain plants have for growing in acid conditions backfire when
lime is added. If the soil is very,
very acid, then aluminium and iron compounds will dissolve. Aluminium ions are toxic to plants. (That is why acid rain is
a problem). Just a few plants have
methods of preventing the toxic aluminium from entering.
These same methods also prevent iron from entering.
If lime is added then iron as well as aluminium become more insoluble.
So the plant cannot get enough iron.
Habitats
The
variety of plants in Langcliffe Parish is due to the variety of habitats. If you find a certain type of habitat then you can look out
for the plants that belong there.
Rough
acid pasture, on glacial drift.
The
most extensive example of this habitat is the land above (south of) the old
road-footpath to Malham Tarn, above Jubilee and Victoria caves, leading round to
the land above and south of Capon Hall. You
can see it in the distance to the south in autumn from the Henside Road because
the vegetation looks whitish due to the dead leaves of Purple Moor Grass and Mat
Grass. This land is dominated by
Common Bent-grass, in places with Mat-grass, Purple Moor-grass and Heath Rush
and the wetter areas have Rushes. This
is species poor vegetation. Without
grazing it would support Birch scrub, and in the less acid places, Alder,
Willow, Rowan and Hawthorn. But the
area is remarkable for being absolutely treeless. Different management could produce Heather and Bilberry, as
happens 2km to the north; outside the parish, on the slopes of Fountains Fell.
Bilberry and Heather, especially, are very rare in the parish.
Some
of the fields have been drained and reseeded (SD 860 666).
The soil is not excessively acid.
Rushy
flushes
Where
there are springs and wet areas, and this often happens on slopes, the flow of
water brings constant supply of nutrients and more basic conditions.
Four rushes which all grow to half a meter in height can grow in the
flushes: Soft Rush, Conglomerate Rush, Hard Rush and Sharp-Flowered Rush.
Sharp-flowered Rush grows in slightly more base rich soils and is more likely to
have interesting fen species growing with it such as:
Marsh Valerian and Ragged Robin, Marsh Violet, Marsh Bedstraw, Marsh
Arrowgrass, Lesser Spearwort, Marsh Willowherb and Quaking grass.
Marsh Speedwell, a relative rarity, was found in only one place, in the
dewpond at SD 830648. If the flush
is more acid one may find the happily distinctive Star Sedge, with its star
shaped inflorescences arid upright narrow shiny mid-to-yellow-green leaves.
Calcareous
flushes
Here
clear water is emerging out of limestone gravel or bedrock. The vegetation is
short. There is very little soil
and humus because the water carries it away. There are yellow green calcareous
flush mosses and lime from the
water can be deposited on them making them brittle.
This
is the habitat where one should find Bird's-eye Primrose and Butterwort, but
sadly Bird's-eye Primrose does not occur in Langcliffe Parish, and only one
plant of Butterwort was recorded.
Two
of the better flush areas at SD 849 674 and SD 865 665, both in the north east
of the parish, both on footpaths and both occurring in the limited area where
the geological section shows the Silurian rocks
at the surface.
One
of the best calcareous flushes occurs on the road halfway up Langcliffe Brow.
(SD 825 652) The Tall-stalked
Yellow-sedge and Broad Blysmus grow here.
Railway
The
railway increases our species score by 12 plants, and there are several other
plants for which the railway banks provide their main habitat.
The railway is important for species diversity for three reasons.
1.
In some cases plants have come in with the railway, and the only places where
they grow in Craven are along the railways.
The Least Toadflax grows at the railway crossing at the kiln. It is a tiny plant with pretty purple flowers. Flattened Meadow-grass also has been found near here.
The
much bigger and more showy Yellow Toadflax grows at the railway bridge (SD 822
660) opposite John Roberts Langcliffe Paper Mill.
Bladder Campion makes a good show here too.
On the railway bank to the south west of this bridge and on the lane next
to it grows Upright Brome.
2.
The line provides an ungrazed habitat. The
showy blue Field Scabious grows on some of the banks as well as the more common
Devil's-bit Scabious. The blue Meadow Crane's-bill and magenta Knapweed add to
the colour. In 2000 Railtrack
cut a good number of trees down. This
on the whole will benefit the ground vegetation, since the leaves cause too much
shade and add too many nutrients to the soil for some of the more interesting
plants to grow.
3.
The verges are not covered by thick agriculturally improved soil.
The substratum is either bedrock, where soil is removed, or else
limestone ballast, hence plants which grow slowly are able to grow here.
They are not out competed by vigorous plants such as Rye-grass.
At one place Kidney Vetch, Carline Thistle and Bee Orchid have been
found.
The
Hoffmann Kiln and the Quarry and cliffs.
This
also provides an ungrazed habitat on limestone rocks and scree.
The kiln itself is home to five different species of Hawkweeds, including
the rare species Hieracium praealtum which is actually mostly found by
railways. Wild Strawberries and
Autumn Gentians grow on the kiln. If
the National Park decides to "Do up" the kiln it is important to have
regard for these plants. The
periodic cutting back of re-growing ash and birch saplings on the kiln by the
Yorkshire Dales Conservation Volunteers is welcomed since the roots damage the
kiln and the branches shade the ground vegetation.
Common
Weeds
Occasionally
new buildings are built and plants come in on the builders' soil. This was the case at Sedgewick View (SD 820 654).
The plants may not have lasted many years but I recorded the plants that
were there then.
Gardens
provide open ground, which is a good place for weeds.
Common Chickweed, Groundsel, Annual Meadow-grass, Shepherd's Purse, Thale-cress,
and Hairy Bitter-cress, are all common weeds.
Purple Fumitory is pretty. The
Ivy-leaved Toadflax, with its beautiful purple flowers was actually introduced
to this country as a garden plant and has spread since.
It grows on several walls and a beautiful spread can be seen at The
Locks.
Introduced
weeds
At
the John Roberts Langcliffe Paper Mill, Short-fruited Willowherb (Epilobium
obscurum) grows. This is the
only place in the survey it was found.
The
tarmac pavements of the main road B6479 support weeds.
They are herbicided in summer by the Council.
The soil left in cracks after the plants have died is available for new
weeds to colonize. Sticky
Groundsel, Barren Brome-grass, Soft Brome-grass and Soft Sow-thistle grow here
and one year a single plant of Canary-grass, probably from bird seed, was found.
Relict
vegetables
Some
plants associated with houses, growing on verges (ungrazed) near houses, are not
originally weeds, but would originally have been planted as vegetables.
There is Good-King-Henry on the road verge opposite Capon Hall. (approx
SD 866 667) There is lots and lots
of Ground Elder and Comfrey on the Bank above Willow Wood (SD 822 658).
Sweet Cicily, as found on the roadside near Cowside Farm, can be used to
flavour stews. Feverfew which grows
on the bank below Ribble Bank, and beside the church may just be a recent garden
escape, but it may also have been used for medicinal properties in the past.
The church yard has plenty of Bistort, with its beautiful pale pink poker
like flower heads. Whilst this is used as an old hay meadow indicator species by
English Nature, its survival may have been encouraged by the fact it was used as
'Dock pudding' in the olden days. The
low growing plant Silverweed with its brilliant yellow flowers and silvery
undersurface to its leaves, which grows at the road side at the foot of
Langcliffe Brow, most likely arrived by itself, but its roots have been used as
vegetables in the past.
The
riverbank
The
shingle supports Creeping Yellow-cress. This
is a striking plant, when in flower, which grows on riverbanks.
On the ungrazed verge of the river at the field above the lower paper
mill SD 818 648 there is Field Garlic, an uncommon plant.
This also grows high up above Langcliffe on the cliffs at SD 837 656, the
south end of Winskill Stones Reserve.
Woodland
Langcliffe
does not have any obvious ancient woodland, and it only has a very small amount
of 'modern woodland'. Only about 2%
of the parish is wooded, including the railway line. This percentage increase
slightly if garden trees are
included. If a line is drawn north
south along the high ground above Clay Pits Plantation then the western third of
the parish (the lower land) is 6% woodland and the eastern two thirds has
virtually no woodland or trees at all, apart from two conifer plantations
occupying 2.5ha, and the shelter belts and plantings at Cowside Farm. The woodland in the west takes the form of Sycamore
plantations planted in the last century or earlier, much of it on limestone
pavement, with some Larch and Beech. A
second type of woodland is formed by colonisation of part of Langcliffe Quarry
by Ash and Sycamore and colonisation of the railway line and river bank.
All these often have a ground flora dominated by Dog's Mercury.
The plantations have not been fully surveyed by the author, but in the
areas surveyed ancient woodland indicators such as Wood Sanicle, Woodruff, and
Herb Paris have not been found. The
copse on pavement behind Lower Winskill Farm has Goldilocks and Moschatel
It
is of intriguing interest that so far I have no record of the woodland plant
Bracken anywhere in Langcliffe Parish. This
fern is a great problem in some parts of the Yorkshire Dales.
Bluebells
and Primroses grow on the high steep slopes of the field to the south west of
Langcliffe Quarry, below the scattered beech trees.
Once walled against stock,
this is now open to sheep.
Limestone
Pavement
Just
over 50% of Britain's Limestone pavement occurs in North Yorkshire. It is fun
looking down the grykes to see what plants can be found away from grazing
animals. White Wood Sorrel, green Dog's Mercury, white Ramsons, Elderberry and
pink Herb Robert can often be found. Ferns such as Wall Rue, Brittle
Bladder-fern, Hart's-tongue, Maidenhair Spleenwort, and Green Spleenwort are
quite frequent. The Scaly Male-fern
and the Hard Shield-fern are rare.
Limestone
grassland on steep slopes in enclosed areas
A
glance at the profile of Langcliffe Parish shows that the steepest slopes occur
where the land rises from 200m to 300m above sea level in about 500m horizontal
distance. The ridge runs north
south down the parish, above the river (the upper part of the U in a glacial U
shaped valley) and the slopes are south west facing.
It is some of these slopes that have the most species rich grassland, and
have a large number of the 47 'Hay Meadow Indicator Species' that are used by
English Nature when assessing the importance of Yorkshire Dales Grassland. Some
of the indicator species present are:
Betony,
Devil's-bit Scabious, Meadow Oat-grass, Downy Oat-grass, Pignut, Quaking Grass,
Hoary Plantain, Lady's Bedstraw, Cat's-ear, Bird'sfoot Trefoil, Bugle, Selfheal,
Field Woodrush, various Lady's Mantles, Cowslip, Carnation Sedge, Glaucous Sedge
and Spring Sedge.
The
steep slopes have more 'hay meadow species' and are more diverse than some of
the limestone grassland higher up in the parish.
Being the upper parts of fields that in the past would have been used as
meadow, they would have not been grazed in May and June, giving herbs a chance
to grow. They are too steep to
spread slurry or fertilizer on nowadays. One
wonders if these slopes were once wooded.
The
slopes lower down, that sometimes are meadowed, on the footpath from the village
to the Railway Bridge opposite John Roberts Mill, are much more species poor.
They do have some Yellow Rattle though, and can look cheerful with the
Yellow Rattle, Pignut and Buttercups. The
other fields near the village have been reseeded in the past and are species
poor.
Upland
limestone grassland
Blue
Moor-grass is a specialty of our area and does not grow in the south of England.
It is easily recognisable in spring by its blue flowers, its broad leaves
compared with the needle-like leaves of Sheep's-fescue, and the fact that it is
the only grass in flower in April. It grows in abundance on cliffs and where
limestone rocks break through the surface of the soil. Occasionally it is
accompanied by the delicate white Limestone Bedstraw.
It
is on the upland limestone grassland and screes that Langcliffe's rareties grow,
in very small quantities. Plants
such as: Mountain Everlasting, Wall Whitlow-grass, Spring Sandwort, Spring
Cinquefoil, Twisted Whitlow-grass, Limestone Fern and Rigid Buckler-fern. These plants have all taken a lot of time to find.
But a walk in the hills in the right time of year, or a rest on a limestone bank not far from the road should reveal some of our lovely limestone plants: In April: white Barren Strawberry, brown Field Woodrush, Blue Moor-grass and white Spring Whitlow-grass. In May: yellow Cowslips and Early-purple Orchids. In summer: yellow Tormentil, delicate five petalled Fairy Flax, yellow Mountain Pansies, sweet smelling pink Thyme, cucumber smelling Salad Burnet, mauve Small Scabious and blue Harebells. Put on your walking boots, get out your flower books and enjoy them. Please leave the flowers there for others to enjoy, and for the flowers to fruit and shed seeds.
Acknowledgements
I
am grateful to all the people who have helped:
To
members of Craven Conservation Group who accompanied me on many recording walks
in May and June 1999; To Plantlife who commissioned me to survey their nature
reserve at Winskill Stones in detail; To Thomas Lord who encouraged me to look
at some of his land at Lower Winskill in detail; To other landowners who gave me
permission to access their land.
Judith
Allinson
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