_Woodsia hyperborea._ The generic name of this species commemorates the
botanist, Mr. Joseph Woods; the specific name is taken from two Greek
words—_hyper_, “beyond,” and _Boreas_, “the north wind,” without doubt a
reference to the fact that the species extends to the Arctic regions. The
plant is also called _Woodsia alpina_. The Alpine Woodsia.
This is a very pretty little Fern. The tiny fronds, which are not more
than two or three inches in length, spring from a tufted root-stock. The
stipes is rather short and bears a few brown scales. The outline of the
frond is oblong, and the leaf tapers slightly towards the base as well as
at the apex. The fronds are once pinnate, and the pinnæ, which are lobed,
are arranged in rather an irregular fashion on either side of the
leaf-stalk. A curious feature of the Alpine Woodsia is that the fronds
are jointed just above their connexion with the root-stock. When the
leaves die the stalks break away at this point and leave the bases
behind.
When the back of the frond is examined it is evident that we have here a
very distinctive feature. The patches of spore cases are covered with a
very thin indusium, and as time goes on this splits into divisions which
resemble a number of hairs. The fronds are of rather a stout texture for
so small a Fern, and in all parts show an inclination to be hairy.
The Alpine Woodsia is a very rare Fern, and there are only a few recorded
localities of it in England and Wales. It makes its home on moist rocks
on the slopes of high mountains. This little Fern is fairly easily
cultivated. The fronds disappear in the winter.
[Illustration: Woodsia ilvensis. The Oblong Woodsia.]
_Woodsia ilvensis._ The specific name refers to the island of Elba
(Ilva), where this plant was first of all discovered. In some quarters
this plant is held to be merely a variety of _W. hyperborea_. The Oblong
Woodsia.
The fronds of this Fern rise from a tufted root-stock. The stipes is
short, but the frond as a whole is larger than that of the Alpine
Woodsia, and may be as much as six inches in length. The outline of the
fronds is oblong, tapering towards the base and at the apex. Over the
whole frond, both on the upper and the lower side, is a covering of fine
hairs. Usually the hairiness of the Oblong Woodsia is very pronounced.
The covering is so thick on the underside that it is rather difficult to
discover the sori. These have the same curious divided indusia to be
observed in the Alpine Woodsia.
The Oblong Woodsia is a very rare Fern, only to be found in mountainous
districts. It has been reported from a few localities in England and also
occurs in Scotland, usually in almost inaccessible places. The fronds die
down in the winter and break away from the stem just at the crown of the
root-stock.
Public-domain text, read in full here on John Shaqi.
Reviews
Reviews
No reviews yet
Be the first to share your thoughts on this work.
Join the Discussion
Join the discussion
Sign in to leave a comment or review.
Sign InorCreate an account