Rumohra
Encyclopedia
Rumohra is a genus
of ferns in the family Elaphoglossaceae.
The frond
s of species within this genus contain round sori
(reproductive clusters) on the underside of the pinnae (leaflets) unlike many other ferns which have separate specialized reproductive fronds. Many of the sori have peltate
indusia and have prominent scales on the stipe
s of the fronds. Species have a wide distribution; for example, Rumohra adiantiformis
is found in the Old World
as well as the New World
, including such diverse places as the Galapagos Islands
and New Zealand.
Genus
In biology, a genus is a low-level taxonomic rank used in the biological classification of living and fossil organisms, which is an example of definition by genus and differentia...
of ferns in the family Elaphoglossaceae.
The frond
Frond
The term frond refers to a large, divided leaf. In both common usage and botanical nomenclature, the leaves of ferns are referred to as fronds and some botanists restrict the term to this group...
s of species within this genus contain round sori
Sorus
A sorus is a cluster of sporangia .In fungi and lichens, the sorus is surrounded by an external layer. In some red algae it may take the form of a depression into the thallus....
(reproductive clusters) on the underside of the pinnae (leaflets) unlike many other ferns which have separate specialized reproductive fronds. Many of the sori have peltate
Leaf shape
In botany, leaf shape is characterised with the following terms :* Acicular : Slender and pointed, needle-like* Acuminate : Tapering to a long point...
indusia and have prominent scales on the stipe
Stipe (botany)
In botany, a stipe is a stalk that supports some other structure. The precise meaning is different depending on which taxonomic group is being described....
s of the fronds. Species have a wide distribution; for example, Rumohra adiantiformis
Rumohra adiantiformis
Rumohra adiantiformis is a species of fern in the family Elaphoglossaceae.The fronds of R. adiantiformis contain round sori on the underside of the pinnae unlike many other ferns which have separate specialized reproductive fronds. Many of the sori have peltate indusia and have prominent scales...
is found in the Old World
Old World
The Old World consists of those parts of the world known to classical antiquity and the European Middle Ages. It is used in the context of, and contrast with, the "New World" ....
as well as the New World
New World
The New World is one of the names used for the Western Hemisphere, specifically America and sometimes Oceania . The term originated in the late 15th century, when America had been recently discovered by European explorers, expanding the geographical horizon of the people of the European middle...
, including such diverse places as the Galapagos Islands
Galápagos Islands
The Galápagos Islands are an archipelago of volcanic islands distributed around the equator in the Pacific Ocean, west of continental Ecuador, of which they are a part.The Galápagos Islands and its surrounding waters form an Ecuadorian province, a national park, and a...
and New Zealand.