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Osmunda regalis AI simulator
(@Osmunda regalis_simulator)
Hub AI
Osmunda regalis AI simulator
(@Osmunda regalis_simulator)
Osmunda regalis
Osmunda regalis, or royal fern, is a species of deciduous fern, native to Europe, North Africa and West Asia, growing in woodland bogs and on the banks of streams. The species is sometimes known as flowering fern due to the appearance of its fertile fronds.
Royal fern is a large perennial herb with stout ascending rhizomes that over many years build up a woody, trunk-like base covered by interwoven roots, 1 m or more high. The fronds, or leaves, arise directly from this rhizome and are very large, typically up to 120 cm but exceptionally as much as 400 cm long and 30-40 cm broad. Each frond is bipinnate, with 5–9 pairs of pinnae up to 30 cm (12 in) long, each pinna with 7–13 pairs of pinnules 2.5–6.5 cm (0.98–2.56 in) long and 1–2 cm (0.39–0.79 in) broad. Many of the fronds have a terminal fertile portion, where the blade is reduced almost to the midrib and densely covered with brown sporangia.
The fronds are at first covered with golden-brown hairs which quickly disappear, leaving a smooth, pale green surface to the leaves. Veins are prominent on both surfaces.
In the gametophyte stage, the prothallus is a small, green, fleshy plant just a few millimetres in size.
The native range of royal fern is throughout Europe, North Africa and the Middle East as far as Iran, from Norway south to Algeria. It is listed as introduced in New Zealand, but its presence throughout North America is based on the taxonomic uncertainty about whether Osmunda spectabilis should be considered a separate species or not.
In many areas, O. regalis has become rare as a result of wetland drainage for agriculture.
The name Osmunda possibly derives from Osmunder, a Saxon name for the god Thor. The name "royal fern" derives from its being one of the largest and most imposing European ferns. The name has been qualified as "old world royal fern" in some American literature to distinguish it from the closely related American royal fern, O. spectabilis. However this terminology is not found in British literature.
The oldest known fossils of Osmunda date to the Paleocene, Osmunda likely derives from fossil species currently assigned to Claytosmunda.
Osmunda regalis
Osmunda regalis, or royal fern, is a species of deciduous fern, native to Europe, North Africa and West Asia, growing in woodland bogs and on the banks of streams. The species is sometimes known as flowering fern due to the appearance of its fertile fronds.
Royal fern is a large perennial herb with stout ascending rhizomes that over many years build up a woody, trunk-like base covered by interwoven roots, 1 m or more high. The fronds, or leaves, arise directly from this rhizome and are very large, typically up to 120 cm but exceptionally as much as 400 cm long and 30-40 cm broad. Each frond is bipinnate, with 5–9 pairs of pinnae up to 30 cm (12 in) long, each pinna with 7–13 pairs of pinnules 2.5–6.5 cm (0.98–2.56 in) long and 1–2 cm (0.39–0.79 in) broad. Many of the fronds have a terminal fertile portion, where the blade is reduced almost to the midrib and densely covered with brown sporangia.
The fronds are at first covered with golden-brown hairs which quickly disappear, leaving a smooth, pale green surface to the leaves. Veins are prominent on both surfaces.
In the gametophyte stage, the prothallus is a small, green, fleshy plant just a few millimetres in size.
The native range of royal fern is throughout Europe, North Africa and the Middle East as far as Iran, from Norway south to Algeria. It is listed as introduced in New Zealand, but its presence throughout North America is based on the taxonomic uncertainty about whether Osmunda spectabilis should be considered a separate species or not.
In many areas, O. regalis has become rare as a result of wetland drainage for agriculture.
The name Osmunda possibly derives from Osmunder, a Saxon name for the god Thor. The name "royal fern" derives from its being one of the largest and most imposing European ferns. The name has been qualified as "old world royal fern" in some American literature to distinguish it from the closely related American royal fern, O. spectabilis. However this terminology is not found in British literature.
The oldest known fossils of Osmunda date to the Paleocene, Osmunda likely derives from fossil species currently assigned to Claytosmunda.
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