Lycopodiopsida

The Lycopodiopsida are a class of plants often loosely grouped as the fern allies. Traditionally, the group included not only the clubmosses and firmosses, but also the spikemosses (Selaginella and relatives) and the quillworts (Isoetes and relatives). However, the latter are now usually placed into a separate class, Isoetopsida.

Clubmosses are thought to be structurally similar to the earliest vascular plants, with small, scale-like leaves, homosporous spores borne in sporangia at the bases of the leaves, branching stems (usually dichotomous), and generally simple form.

The class Lycopodiopsida as interpreted here contains a single living order, the Lycopodiales, and a single extinct order, the Drepanophycales.

Order Lycopodiales

The classification of this group has been unsettled in recent years and a consensus has yet to emerge. Older classifications took a very broad definition of the genus Lycopodium that included virtually all the species of Lycopodiales. The trend in recent years has been to define Lycopodium more narrowly and to classify the other species into several genera, an arrangement that has been supported by both morphological and molecular data and adopted in numerous revisions and flora treatments. Starting from the four genera accepted by Øllgaard, a study based on chloroplast DNA produced the cladogram shown below (reproduced here to genus level only), confirming the monophyly of the four genera, and their distance from Isoetes.

Moss

Mosses are small flowerless plants that typically grow in dense green clumps or mats, often in damp or shady locations. The individual plants are usually composed of simple, one-cell thick leaves, attached to a stem that may be branched or unbranched and has only a limited role in conducting water and nutrients. Although some species have vascular tissue this is generally poorly developed and structurally different from similar tissue found in other plants. They do not have seeds and after fertilisation develop sporophytes (unbranched stalks topped with single capsules containing spores). They are typically 0.2–10 cm (0.1–3.9 in) tall, though some species are much larger, like Dawsonia, the tallest moss in the world, which can grow to 50 cm (20 in) in height.

Mosses are commonly confused with lichens, hornworts, and liverworts. Lichens may superficially look like mosses, and have common names that include the word "moss" (e.g., "reindeer moss" or "iceland moss"), but are not related to mosses. Mosses, hornworts, and liverworts are collectively called "bryophytes". Bryophytes share the property of having the haploid gametophyte generation as the dominant phase of the life cycle. This contrasts with the pattern in all "vascular" plants (seed plants and pteridophytes), where the diploid sporophyte generation is dominant.

Mossé

Mossé is a French family name:

Mossø

Mossø is Denmark's third largest freshwater lake and Jutland's largest, as measured by surface area. The lake is located just east of the city of Skanderborg in east Jutland, but is part of both Skanderborg Municipality and Horsens Municipality. Mossø lies in the middle of the area and landscape known as Søhøjlandet (English: The Lake-highland).

There is a small lake named Mossø in the forest of Rold Skov in Himmerland.

Nature

Both ospreys and white-tailed eagle is regularly observed at Mossø and the later have recently established here as a breeding bird, which is rare in Denmark.

Mossø is part of the 4,470 ha Natura 2000 protection area, designated as number 52. The lake is also designated as an international bird protection area, with number F35.

References

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