Asplenium sylvaticum (Aspleniaceae), a new fern species from Yungas and Paraná forests, Neotropical region.
An Acad Bras Cienc
; 96(2): e20231015, 2024.
Article
in En
| MEDLINE
| ID: mdl-38922278
ABSTRACT
A new species of Asplenium L. (Aspleniaceae) is described and illustrated. Asplenium sylvaticum is endemic of the Yungas and Paraná biogeographic provinces in the Southern Cone. The main diagnostic characters for this taxon are apical pinnae with one to four caudate lobes at the base, similar in size to lateral pinnae, smooth pinnate blades with 18-36 pairs of caudate pinnae and spores with reticulate perispore, winged folds with scarce equinulaes on the margins and the laesurae wide with smooth margin. The new species belongs to the A. serra species complex group, characterised by xeromorphic habit, creeping rhizome and coriaceous fronds with branched scales on both surfaces, and resembles the other species inhabiting in Argentina, A. achalense and A. serra, in overall leaf architecture and shape but differs of the aforementioned species (and the other species of the A. serra complex) by the unique combination of characters of its rhizomatic scales, fronds and spores. A key with the morphological and palynological characters that differentiate A. sylvaticum from the other taxa belonging to the A. serra complex in the South American Cone and Bolivia is given.
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Forests
/
Ferns
Country/Region as subject:
America do sul
/
Brasil
Language:
En
Journal:
An Acad Bras Cienc
Year:
2024
Document type:
Article
Affiliation country: