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Some Plants of the Lava Rocks of Idar-Oberstein in the Nahe Valley |
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The mountain in the Nahe Valley at Idar-Oberstein consists of volcanic rock.
The southern exposed slopes which can become very warm in summer as well as the northern exposed slopes which are shadowy most time of the day
are forming extreme biotopes with own plant societies.
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At this northern exposed rock in the city of Idar-Oberstein e.g. still Irish Saxifrage Saxifraga rosacea subsp. sponhemica,
and Schmidt's Hawkweed Hieracium schmidtii agg. can be found,
but these are mixed up with plants introduced or ran wild from gardens:
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Saxifraga rosacea subsp. sponhemica / Irish Saxifrage Saxifragaceae / Saxifrage Fam.
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Hieracium schmidtii agg. / Schmidt's Hawkweed Asteraceae / Composite Fam.
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Sedum rupestre / Crooked Yellow Stonecrop, Reflexed Stonecrop Crassulaceae / Stonecrop Fam.
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Ribes uva-crispa / Gooseberry Saxifragaceae / Saxifrage Fam.
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Ribes uva-crispa / Gooseberry Saxifragaceae / Saxifrage Fam.
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Festuca rhenana / Rhenish Fescue Poaceae / Grass Fam.
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Sedum album / White Stonecrop Crassulaceae / Stonecrop Fam.
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Linum catharticum / Fairy Flax Linaceae / Linseed Fam.
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Galium pumilum / Slender Bedstraw Rubiaceae / Bedstraw Fam.
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Dianthus carthusianorum subsp. carthusianorum / Carthusian Pink Caryophyllaceae / Campion Fam.
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Thymus pulegioides / Large Thyme Lamiaceae / Mint Fam.
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Campanula rotundifolia / Harebell Campanulaceae / Bellflower Fam.
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Potentilla verna / Spring Cinquefoil Rosaceae / Rose Fam.
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Knautia arvensis / Field Scabious Dipsacaceae / Teasel Fam.
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Sanguisorba minor / Salad Burnet Rosaceae / Rose Fam.
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Arabidopsis arenosa / Sand Rock-Cress Brassicaceae / Crucifers
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Arabidopsis arenosa / Sand Rock-Cress Brassicaceae / Crucifers
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Cerastium tomentosum / Snow in Summer Caryophyllaceae / Campion Fam.
(Garden escape)
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At southern exposed rocks there is extreme heat in summer, and also extreme dryness at many of these rocks, which leads to a meagre and very special plant society:
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Melica transsilvanica / Transsilvanian Melick Poaceae / Grass Fam.
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Stipa joannis / Grey-Sheathed Feather-Grass Poaceae / Grass Fam.
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Anthericum liliago / St. Bernard's Lily Liliaceae / Lily Fam.
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Helianthemum nummularium / Common Rock-Rose Cistaceae / Rockrose Fam.
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Stachys recta / Yellow Woundwort Lamiaceae / Mint Fam.
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Hippocrepis comosa / Horseshoe Vetch Fabaceae / Legumes
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Hippocrepis comosa / Horseshoe Vetch Fabaceae / Legumes
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Anthyllis vulneraria subsp. pseudovulneraria / Fodder Kidney Vetch Fabaceae / Legumes
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Silene nutans / Nottingham Catchfly Caryophyllaceae / Campion Fam.
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Seseli libanotis / Moon Carrot Apiaceae / Umbellifers
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Seseli libanotis / Moon Carrot Apiaceae / Umbellifers
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At the 'Gefallener Felsen' (fallen rock, a NR) I found the rare Biscutella laevigata among other plants.
There are sunny parts as well as wooded areas:
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Biscutella laevigata / Buckler Mustard Brassicaceae / Crucifers
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Biscutella laevigata / Buckler Mustard Brassicaceae / Crucifers
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Festuca rhenana ? / Rhenish Fescue Poaceae / Grass Fam.
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Sedum forsterianum / Rock Stonecrop, Welsh Stonecrop Crassulaceae / Stonecrop Fam.
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Sedum forsterianum / Rock Stonecrop, Welsh Stonecrop Crassulaceae / Stonecrop Fam.
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Hieracium pilosella / Mouse-Ear Hawkweed Asteraceae / Composite Fam.
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Genista sagittalis / Pennate Greenweed Fabaceae / Legumes
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Rumex acetosella / Sheep's Sorrel Polygonaceae / Knotweed Fam.
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Scleranthus perennis / Perennial Knawel Caryophyllaceae / Campion Fam.
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Potentilla argentea agg. / Hoary Cinquefoil Rosaceae / Rose Fam.
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Artemisia campestris / Field Wormwood Asteraceae / Composite Fam.
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Achillea nobilis / Showy Milfoil Asteraceae / Composite Fam.
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Verbascum lychnitis / White Mullein Scrophulariaceae / Figwort Fam.
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Centaurea scabiosa / Greater Knapweed Asteraceae / Composite Fam.
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Galatella linosyris / Goldilocks Aster Asteraceae / Composite Fam.
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Campanula persicifolia / Peachleaf Bellflower Campanulaceae / Bellflower Fam.
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Trifolium alpestre / Alpine Clover Fabaceae / Legumes
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Festuca rhenana / Rhenish Fescue Poaceae / Grass Fam.
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Erysimum crepidifolium / Hedge Mustard Brassicaceae / Crucifers
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Erysimum crepidifolium / Hedge Mustard Brassicaceae / Crucifers
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Asplenium trichomanes s.l. / Spleenwort Pteridopsida / True Ferns
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Sorbus aria / Whitebeam Rosaceae / Rose Fam.
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Acer campestre / Field Maple Aceraceae / Maple Fam.
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Pyrus pyraster / Wild Pear Rosaceae / Rose Fam.
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A rather rare plant is Wallflower Cabbage which occurs on the 'Gefallener Felsen' (fallen rock, a NR):
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Coincya monensis subsp. cheiranthos / Wallflower Cabbage Brassicaceae / Crucifers
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Coincya monensis subsp. cheiranthos / Wallflower Cabbage Brassicaceae / Crucifers
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Naturally this list of plants isn't complete by far. It will be continued on occasion.
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