The Fern Lover's Companion Part 4
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Widely distributed in tropical America. Often called Tree-Polypody.
THE BRACKEN GROUP
Sporangia near or on the margin of the segments, the reflexed portions of which serve as indusia.
1. BRACKEN OR BRAKE
_Pteris aquilina_. PTERiDIUM LATIuSCULUM[1]
[Footnote 1: The use of small capitals in the scientific names indicates in part the newer nomenclature which many botanists are inclined to adopt.]
Fronds broadly triangular, ternate, one to three feet high or more, the widely spreading branches twice pinnate, the lower pinnules more or less pinnatifid. Sporangia borne in a continuous line along the lower margin of the ultimate divisions whose reflexed edges form the indusium. (Greek, _pteron_, a wing, the feathery fronds suggesting the wings of a bird.)
[Ill.u.s.tration: Common Bracken or Brake, a Sterile Frond. _Pteris aquilina_ (Providence County, R.I.)]
[Ill.u.s.tration: A Fertile Frond of Common Bracken. _Pteris aquilina_ (Suffolk County, Ma.s.s.)]
"The heath this night must be my bed, The bracken curtain for my head."
SCOTT.
The outlines of the young bracken resemble the little oak fern. It flourishes in thickets and open pastures, often with poor soil and scant shade. It is found in all parts of the world, and is said to be the most common of all our North American ferns. In a cross section of the mature stipe superst.i.tion sees "the devil's hoof" and "King Charles in the oak,"
and any one may see or think he sees the outlines of an oak tree. It was the bracken, or eagle fern, as some call it, which was supposed to bear the mysterious "fern seed," but only on midsummer eve (St. John's eve).
"But on St. John's mysterious night, Confest the mystic fern seed fell."
This enabled its possessor to walk invisible.
"We have the receipt for fern-seed, We walk invisible."
SHAKESPEARE.
The word brake or bracken is one of the many plant names from which some of our English surnames are derived, as Brack, Breck, Brackenridge, etc., and fern (meaning the bracken) is seen in Fern, Fearns, Fernham, Fernel, Fernside, Farnsworth, etc. Also, in names of places as Ferney, Ferndale, Fernwood, and others. Although the bracken is coa.r.s.e and common, it makes a desirable background for rockeries, or other fern ma.s.ses. The young ferns should be transplanted in early spring with as much of the long, running rootstock as possible.
Var. _pseudocaudata_ has longer, narrower and more distant pinnules, and is a common southern form.
[Ill.u.s.tration: Var. _pseudocaudata_]
2. MAIDENHAIR. _Adiantum_
Ferns with much divided leaves and short, marginal sori borne at the ends of free-forking veins, on the under side of the reflexed and altered portion of the pinnules, which serves as an indusium. Stipes and branches of the leaves very slender and polished.
(Greek, unwetted, because drops of water roll off without wetting the leaves.)
(1) COMMON MAIDENHAIR. _Adiantum pedatum_
A graceful fern of shady glen and rocky woodland, nine to eighteen inches high, the black, s.h.i.+ning stalks forked at the top into two equal, recurved branches, the pinnae all springing from the upper side. Pinnules triangular-oblong, bearing short sori on their inwardly reflexed margins which form the indusium.
[Ill.u.s.tration: A Spray of Maidenhair]
[Ill.u.s.tration: Fruiting Pinnae of Maidenhair]
The maidenhair has a superficial resemblance to the meadow rue, which also sheds water, but it may be known at once by its black, s.h.i.+ning stalks with their divisions all borne on one side. It is indeed a most delicate fern, known and admired by every one. The term maidenhair may have been suggested by the black, wiry roots growing from the slender rootstock, or by the dark, polished stems, or, as Clute explains it, "because the black roots, like hair, were supposed, according to the 'doctrine of signatures' to be good for falling hair, and the plant was actually used in the 'syrup of capillaire'[A] (_Am. Botanist_, November, 1921). While the maidenhair is not very common, it is widely distributed, being found throughout our section, westward to California, and northward to the British Provinces.
"Though the maidenhair has a wide range, and grows abundantly in many localities, it possesses a quality of aloofness which adds to its charm.
Its chosen haunts are dim, moist hollows in the woods, or shaded hillsides sloping to the river. In such retreats you find the feathery fronds tremulous on their glistening stalks, and in their neighborhood you find, also, the very spirit of the woods."
MRS. PARSONS.
[Footnote A: It may be stated that capillaire syrup besides the use here indicated was highly esteemed as a pectoral for the relief of difficult breathing.]
[Ill.u.s.tration: Common Maidenhair. _Adiantum pedatum_ (Reading, Ma.s.s., Kingman)]
[Ill.u.s.tration: Alpine Maidenhair. _Adiantum pedatum_, Var. _aleutic.u.m_ (Fernald and Collins, Gaspe County, Quebec, 1906) (From the Gray Herbarium)]
The fern is not hard to cultivate if allowed sufficient moisture and shade.
Along with the ostrich fern it makes a most excellent combination in a fern border.
Var. ALEUTIc.u.m, or Alpine Maidenhair. A beautiful northern form especially abundant on the high tableland of the Gaspe Peninsula, Quebec, where it is said to cover hundreds of acres. In the east it is often dwarfed--six to ten inches high, growing in tufts with stout rootstocks, having the pinnules finely toothed instead of rounded and the indusia often lunate, rarely twice as long as broad. (Fernald in _Rhodora_, November, 1905.) Also found in northern Vermont, and to the northwestward.
(2) THE VENUS-HAIR FERN. _Adiantum Capillus-Veneris_
Fronds with a continuous main rachis, ovate-lanceolate, twice pinnate below. Pinnules, fan-shaped on slender, black stalks, long, deeply and irregularly incised. Veins extending from the base of the pinnules like the ribs of a fan.
[Ill.u.s.tration: Venus Hair Fern. _Adiantum Capillus-Veneris_]
While our common maidenhair is a northern fern, the Venus-hair Fern is confined to the southern states. It is rarely found as far north as Virginia, where it meets, but scarcely overlaps its sister fern. The medicinal properties of _Adiantum pedatum_ were earlier ascribed to the more southern species, which is common in Great Britain, but, like many another old remedy, "the syrup of capillaire" is long since defunct.
3. CLIFF BRAKES. _Pellaea_
Sporangia borne on the upper part of the free veins inside the margins, in dot-like ma.s.ses, but may run together, as in the continuous fruiting line of the bracken. Indusium formed of the reflexed margins of the fertile segments which are more or less membranous. (Pellaea, from the Greek _pellos_, meaning dusky, in allusion to the dark stipes.)
(1) PURPLE CLIFF BRAKE. _Pellaea atropurpurea_
Stipes dark purple or reddish-brown, polished and decidedly hairy and harsh to the touch, at least on one side. Fronds coriaceous, pale, simply pinnate, or bipinnate below; the divisions broadly linear or oblong, or the sterile sometimes oval, chiefly entire, somewhat heart-shaped, or else truncate at the stalked base. Veins about twice forked. Basal scales extending into long, slender tips, colorless or yellow.
[Ill.u.s.tration: Purple Cliff Brake. _Pellaea atropurpurea_]
Another name is "the winter brake," as its fronds remain green throughout the winter, especially in its more southern ranges. It grows on rocky ledges with a preference for limestone, and often in full sun. In large and mature fronds its pinnae are apt to be extremely irregular. While its stipes are purplish, its leaves are bluish-green, and its scales light-brown or yellow. Strange to say, this brake of the cliffs thrives in cultivation.
Woolson says of it, "This fern is interesting and valuable. It is not only beautiful in design, but unique in color, a dark blue-green emphasizing all the varying tints about it--a first-cla.s.s fern for indoor winter cultivation. It is a rapid grower, flouris.h.i.+ng but a few feet from coal fire or radiator, in a north or south window. It quickly forgives neglect, and if allowed to dry up out of doors or indoors, recovers in due time when put in a moist atmosphere. It makes but one imperative demand, and that is the privilege of standing still. Overzealous culturists usually like to turn things around, but revolving cliffs are not in the natural order of things. The slender black stipes are very susceptible to changes of light and warped and twisted fronds result."
The Fern Lover's Companion Part 4
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The Fern Lover's Companion Part 4 summary
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