Asplenium anceps
Encyclopedia
Asplenium anceps is a diploid fern
of Aspleniaceae
family and one of the ancestors of the ferns that form the trichomanes complex. It lives exclusively in the three northernmost islands of the Macaronesian region, that is, is an endemic macaronesian fern. Its fronds are leathery and plastic and rachis
is very thick, bright reddish brown and is traversed throughout its length of three wings, two on the upper surface to draw a groove and a third on the lower surface which is characteristic and unique to this species, since all other species of the trichomanes complex without. A typical feature of this fern, which he shares with all its hybrid offspring ( Asplenium azoricum, Asplenium azomanes and Asplenium X tubalense ) is the existence of a small atrium on the basis of medium and less pinnae directed toward the apex of the blade with one or two sori on its underside.
Fern
A fern is any one of a group of about 12,000 species of plants belonging to the botanical group known as Pteridophyta. Unlike mosses, they have xylem and phloem . They have stems, leaves, and roots like other vascular plants...
of Aspleniaceae
Aspleniaceae
The Aspleniaceae is a family of ferns, included in the order Polypodiales or in some classifications as the only family in the order Aspleniales....
family and one of the ancestors of the ferns that form the trichomanes complex. It lives exclusively in the three northernmost islands of the Macaronesian region, that is, is an endemic macaronesian fern. Its fronds are leathery and plastic and rachis
Rachis
Rachis is a biological term for a main axis or "shaft".-In zoology:In vertebrates a rachis can refer to the series of articulated vertebrae, which encase the spinal cord. In this case the rachis usually form the supporting axis of the body and is then called the spine or vertebral column...
is very thick, bright reddish brown and is traversed throughout its length of three wings, two on the upper surface to draw a groove and a third on the lower surface which is characteristic and unique to this species, since all other species of the trichomanes complex without. A typical feature of this fern, which he shares with all its hybrid offspring ( Asplenium azoricum, Asplenium azomanes and Asplenium X tubalense ) is the existence of a small atrium on the basis of medium and less pinnae directed toward the apex of the blade with one or two sori on its underside.
Habitat
It grows in the shade of laurel forests and high mountain pine forests between the stones of the walls and crevices of volcanic rock oriented north and northwest, on a base of moss and lichen.Hybrids
- Asplenium azoricumAsplenium azoricumAsplenium azoricum is a fern from hybrid origin of the Aspleniaceae family, descendent of the Macaronesian ancestral fern Asplenium anceps. It lives exclusively in the Azores, that is a strict endemic Azorean fern. Its fronds are coriaceous like plastic and its rachis is very thick, dark garnet...
: allotetraploid hybrid by cross between A. anceps and an individual of trichomanes complex.