Doryopteris majestosa is 1 of approximately 40 species comprising the genus Doryopteris.
The genus is mostly encountered in the Neotropics, with just a couple of species occurring in the Hawaii Islands and in South Africa. Only one species - D. concolor (Langsd. and Fisch) kuhn, has pan-tropical distribution.
Full taxonomic treatment of the genus is being prepared for publication.
Doryopteris majestosa is a magnificent species of fern. Its large and variously lobed fronds are the most notable features. They vary in shape from:
Sub-dimorphic fronds grow from the decumbent rhizome in D. majestosa:
In both types of fronds, petioles are brown to dark brown and basically circular in cross-section. On the upper side they are covered with rust-coloured hairs, which tend to be concentrated towards the base of the lamina.
Proliferous buds are present on both sterile and fertile fronds at the base of the lamina.
D. majetosa was formerly known and often identified as, D. nobilis.
The 2 species are the largest species of the genus and have similar leaf architecture.
However, while revising the genus, it was noticed that the type specimen of D. noblis and all its synonyms did not bear buds.
Thus, specimens that have proliferous buds and a number of other distinct characters have been separated as a distinct taxon known as D. majestosa.
Other main characters distinguishing D. majestosa from D. nobilis are:
Sub-erect (erect meaning vertical).
With two sets of chromosomes in each cell.
Frond that produces spores.
Leaf of a fern or palm.
The tropical part of the American continents, such as central Mexico, the Caribbean islands, northern Chile, Paraguay and southern Brazil.
Occurring in all the tropical regions of the world.
Palmetely lobed, but with the side lobes further divided successively, one from the other (not all arising from the same point as in palmate).
Pinnately divided, with unspecified depth of division.
Buds capable of forming another plant.
Growing on or amongst rocks.
Shaped like an arrow-head.
Cluster of sporangia.
Spore-producing structure in pteridophytes.
Having 2 different shapes, forms or size.
With 3 sets of chromosomes in each cell.