Asplenium hybrids
Encyclopedia
The fern
genus Asplenium
is well-known for its hybridization capacity, especially in temperate zones.
composed of 3 diploid species, 3 allotetraploid species formed by hybridisation and chromsome doubling from the former, and assorted diploid, triploid and tetraploid hybrids between the 6 species.
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...
genus Asplenium
Asplenium
Asplenium is a genus of about 700 species of ferns, often treated as the only genus in the family Aspleniaceae, though other authors consider Hymenasplenium separate, based on molecular phylogenetic analysis of DNA sequences, a different chromosome count, and structural differences in the rhizomes...
is well-known for its hybridization capacity, especially in temperate zones.
North American (or Appalachian) Asplenium Hybrid Complex
The Appalachian hybrid complex in Asplenium is a polyploid complexPolyploid complex
A polyploid complex is a group of interrelated and interbreeding plants that also have differing levels of ploidy that can allow genetic exchanges between unrelated species.The polyploid complex was first described by E. B. Babcock and G...
composed of 3 diploid species, 3 allotetraploid species formed by hybridisation and chromsome doubling from the former, and assorted diploid, triploid and tetraploid hybrids between the 6 species.
Parent Species (Diploids)
- Asplenium montanumAsplenium montanumAsplenium montanum is commonly known as the mountain spleenwort, a simple reflection of the scientific name. It is a small but intricately divided fern of acid rocks. Typically, it grows in rock crevices into which moisture seeps from within the rock strata...
- Asplenium platyneuron
- Asplenium rhizophyllumAsplenium rhizophyllumAsplenium rhizophyllum, the American Walking Fern, is a rare, low lying fern native to North America. It is a close relative of Asplenium ruprechtii which is found in East Asia and also goes by the common name of walking fern.-Description:The name walking fern was derived from the way the fern...
Hybrid Species (Tetraploids)
- Asplenium bradleyiAsplenium bradleyiBradley's spleenwort, Asplenium bradleyi, is a rare rock fern of the Appalachian area of eastern North America. It is a species of hybrid origin. The parents are Asplenium montanum and Asplenium platyneuron. The hybrid became a species with a doubling of the chromosome number, hence this species...
(A. montanum × A. platyneuron; allotetraploid) - Asplenium ebenoides (A. platyneuron × A. rhizophyllum; allotetraploid as species but most commonly diploid hybrid)
- Asplenium pinnatifidumAsplenium pinnatifidumAsplenium pinnatifidum is known as the lobed spleenwort or pinnatifid spleenwort. It is an Appalachian rock fern, growing in rock crevices in moderately acid to subacid strata. It is often confused with Asplenium bradleyi....
(A. montanum × A. rhizophyllum; allotetraploid)
Other Hybrids
- Asplenium ×gravesii (A. bradleyi × A. pinnatifidum; allo-allotetraploid)
- Asplenium ×trudellii (A. montanum × A. pinnatifidum; allotriploid)
Other Asplenium Hybrid Species
- 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...
(A. ancepsAsplenium ancepsAsplenium 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...
× ?) - Asplenium majoricumAsplenium majoricumAsplenium majoricum is a tiny fern endemic to Mallorca and some locations in Valencia and south of Catalonia. It belongs to the Aspleniaceae family. This allotetraploid hybrid is the result of crossbreeding between the diploid ferns Asplenium fontanum subsp. fontanum and Asplenium petrarchae subsp...
(A. fontanum × A. petrarchaeAsplenium petrarchaeAsplenium petrarchae is a tiny fern of the family Aspleniaceae. Its fronds are densely pubescent-glandular with length between 5 and 14 cm. Petiole less than the sheet of dark brown and shiny. Sores along the central line of the pinnae, subelliptical and confluent when mature...
)