Group: Pteridophytina (Ferns)
Family: Cystopteridaceae (Blasenfarngewächse)
Genus: Gymnocarpium (Oak Ferns)
Gymnocarpium dryopteris (L.) Newman - Oak Fern
Gymnocarpium robertianum (Hoffm.) Newman - Limestone Fern
10–40 cm tall. <span class="v1">sporangia:</span> on the lower surface of the frond. <span class="v1">sori:</span> occasionally marginal, <b>close to each other, often almost connected</b>, <ba><b>oval</b></ba>. <span class="v1">indusium:</span> <b>absent...
The colours represent the floristic status of the species in the respective region. Green indicates native occurrences, light green naturalized occurrences. Adventive occurrences are represented by light yellow shades and plants that are cultivated (but rarely occur in the wild) are dark yellow. Grey colours are used, if the floristic status of species is unknown or uncertain.
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Natural, established occurences |  |
Artificial occurences |
The color intensity reflects the species' abundance
Data: Floristische Kartierung Deutschlands (Stand 2013), Bundesamt für Naturschutz (www.floraweb.de)
perennial herbaceous vegetation, screes, rocky habitats
in alkaline habitats