Bartramia halleriana

Bartramia Halleriana

Bartramia Halleriana ( Haller's apple moss ) is a moss species from the family Bartramiaceae. The first description of the species ( from 1768 ) is by Albrecht von Haller, a Swiss physician, botanist and science journalist who lived from 1708 to 1777.

Features

Bartramia Halleriana forms soft, green to brownish green upholstered with grass to 15 cm tall plants. The leaves with slightly differ -ended leaf base are long drawn out subulate, to 1 cm long, somewhat einseitswendig, tortuous, dry and cut in two rows at the edges. In contrast to Bartramia pomiformis the leaves appear even longer and more hair -like. The leaving midrib is serrated in the blade tip under hand. The lamina cells are elongated in the leaf base and water-white, square top to rectangular and about 9 microns wide.

The spore capsules on to 5 millimeters long Seta are more or less hidden in the moss lawn, which emerge from a Perichaetium one to three Sporogone.

Habitat requirements and distribution

The moss is lime-intolerant and grows in humid and mostly shaded places in forests on calcareous rocks and stone or humus over limestone rock. In Central Europe it has its main distribution in the higher uplands and the Alps, at lower altitudes it is rare or absent. Moreover, it is more or less distributed almost worldwide.