Sphagnopsida pdf

View 6 excerpts, cites background. Acaulon mediterraneum LimprContributor: R. NatchevaBulgaria: Blagoevgrad region, Belasitsa Nature Park, south of the road between the villages of Razdak and Drangovo, on soil in pasture, View 8 excerpts, cites background.

On the taxonomic position of Conardia Robins. AbstractEvidence is presented for placing Conardia near the Warnstorfia-Calliergon species in the Amblystegiaceae. Two remarkable moss species new to Turkey and South-west Asia. Abstract Bryum blindii and Dicranella crispa are reported new to Turkey and South-west Asia following a recent bryological excursion to the Ardahan and Burdur regions of Turkey.

Illustrations, … Expand. View 3 excerpts, cites background. New and remarkable bryophyte records from Mongolia. Nine species of hepatics and nineteen species of mosses are reported new to Mongolia. Fissidens sublimbatus is new to Asia, Didymodon maximus and Schistidium pruinosum are new to Central Asia. Some bryophytes newly reported for the Australian continent.

Anoectangium euchloron Schwagr. Chopra and Tortula caucasica Broth. The article is a contribution to knowledge of the bryophyte flora of the Djerdap National Park in the Eastern Serbia. Eighty-two bryophyte species were recorded, 71 mosses and 11 liverworts.

Fissidens osmundoides Hedw. Bryophyta in Slovakia. View 1 excerpt, cites background. Illustrated Moss Flora of Fennoscandia. Moss flora of North America, North of Mexico. The chlorophyllose cells, as the name suggests, possess chloroplasts and they form a network pattern in the leaves.

The hyaline cells are dead at maturity and have one or more pores, which function to retain water and allows access to the environment. The structure of the hyaline cells is strengthened by fibrils, which are thickenings of the cell walls. The arrangement of the chlorophyllose cells as well as the variations in the pore distribution seen in the hyaline cells provide useful information when classifying species in this class. A cross section of a branch leaf can also be very useful in identifying a Sphagnum species.

When observed carefully, one can see there is variation in how chlorophyllose cells are exposed. In some species the chlorophyllose cells are completely enclosed, while in others they can either be exposed more broadly on the concave surface inner , the convex surface outer or equally exposed on both surfaces.

Furthermore, the inner cell walls of the hyaline cells can further aid in the identification. Seen here in this picture is a branch leaf cross section of Sphagnum papillosum , demonstrating the papillae on the cell walls adjacent to the cholorophyllose cells. The stem leaves tend to fold down, with the apex of the leaves pointing away from the apex of the stem. A closer look at the stem leaves will reveal that they have a tapered tip and an expanded base. Furthermore, chlorophyllose and hyaline cells are present, however it is worth noting that both these cells lack chlorophyll when mature.

The outer layer of the stem, also referred to as the cortex, is also composed of hyaline cells, which are called cortical cells.

In some species, the hyaline cells may have pores and fibrils present. The perichaetial branches of the Sphagnum species are initially at the apex of the main stem, where the cluster of branches are found.

Per each perichaetium, one can find multiple archegonia, however paraphyses are absent. The perigonial branches, which are modified divergent branches, can easily be identified because the tips are often tinged red.

The antheridia are nearly globose and have a stalk, as seen in this picture. The sporangia of Sphagnum are similar to some extent to those seen in Bryopsida and Polytrichopsida in that an operculum is shed prior to the spores being dispersed. However, unlike these classes, Sphagnum species lack peristome.

Furthermore, the sporangia in Sphagnopsida are elevated by a pseudopodium rather than by a seta. As seen in the liverworts, the stalk do not elongate until the sporangium has reached maturity. The sporangia in this class are round in shape and are often short-lived. When the sporangium reaches maturity and the spores are ready to be shed, the columella which is globose in Sphagnum begins to degrade.