Grimmia teretinervis
Grimmia teretinervis Limpr.
Grimmiaceae
Conservation status. Vulnerable [VU D2]. The species is listed in Red Data Book of European Bryophytes as ‘Vulnerable’.
Morphology and biology. Perennial acrocarpous moss. Tufts dense, dark green to black, 1–3 cm high. Stems thread-like, slightly branched. Leaves ovate-lanceolate, sharp or round pointed, and with short-toothed hair-point, well defined in upper leaves. Nerve strong, brownish, projecting on both leaf sides. In Europe only female plants were found. Gemmae lacking, but sometimes leafy structures for vegetative propagation can develop. Unisexual.
Habitats and populations. Plants grow in exposed habitats on dry calcareous rocks and on sandstones.
Distribution in Bulgaria. Northeast Bulgaria (Pobiti Kamani locality, Varna district).
General distribution. Balkan Peninsula (Bulgaria, Romania) and other parts of Europe (Austria, Czech Republic, Slovakia, Germany, Switzerland, Hungary, Italy, Slovenia), N Africa, North America. Alpine species.
Threats. Very limited propagation and dispersal potential, as in Europe the species does not produce spores; infrastructure development and air pollution.
Conservation measures taken. Species locality is in Pobiti Kamani Protected Site and in a site of the European ecological network Natura 2000 in Bulgaria. The species is included in the National System for Monitoring of Biodiversity.
Conservation measures needed. Long-term study, assessment of trends in habitat changes, and prognosis for population development; legal protection of the species by the national Biological Diversity Act.
References. Šmarda 1970; ECCB 1995.
Author: Anna Ganeva
