This fern has been thought to be a hybrid between the crested and spinulose ferns, but is now regarded as distinct.
It differs from it, however, by being twice pinnate below, and from the typical spinulose fern by its glandular indusium; but from the intermediate variety it is more difficult to separate it, as that also has indusiate glands.
Distinguished from Perichæna by the terete plasmodiocarp and by the morespinulose capillitium.
Capillitium of slender tubules, issuing from the interior of the stipe, forming a complicated network, without any free extremities, the surface minutely warted or spinulose or with annular ridges.
More frequently the tapering points are multiplied, the elaters bearing two or three spines at the extremities; this often occurs in the species of Trichia, and also of Hemiarcyria with spinulose elaters.
In somewhat southern localities the tapering, yellow-green fronds of the Dicksonia or Hay-scented Fern are even more abundant and conspicuous than the darker foliage of the Spinulose Shield Fern.
Its frequent companions are the Spinulose Shield Fern, the Christmas Fern, the Silvery Spleenwort, and the Maidenhair.
The Spinulose Shield Fern and the Evergreen Wood Fern meet us at every turn of the shaded path beside the brook, and on the rocky wooded hill-side the Christmas Fern is almost as abundant.
More or less frequent are graceful crowns of the Spinulose Shield Fern, slender shining fronds of Christmas Fern, dull-green groups of Silvery Spleenwort and stately plumes of Goldie's Fern.
This form of the Spinulose Wood Fern is distinguished chiefly by its broader fronds and by the smooth indusia.
This species corresponds to the preceding in all respects except in the fact that the spores are clustered in groups of four to twelve and are a little larger, 11-13 mu, strongly spinulose on the exposed surface.
Furthermore, the spirals may be smooth or spinulose the elater uniform throughout or enlarged betimes by nodes and swellings.
Related to the two preceding, but distinct by itsspinulose capillitium.
From the preceding it is especially distinguished by the spinulose capillitium and larger spores.
Rough rushes nod three-cornered approval and I am sure the spinulose wood ferns crowd down into wetter spots than anywhere else, just to get sight of them.
If it were in the air the polypodys, the Christmas ferns and the spinulose wood ferns would have lost their color also.
The above list will hopefully give you a few useful examples demonstrating the appropriate usage of "spinulose" in a variety of sentences. We hope that you will now be able to make sentences using this word.
