सच (लेप्टोस्पोरैनेटिएट

filicales's Usage Examples:

As to the relationship of the Filicales to the other phyla, evidence from extinct plants appears to be wanting.

In the earliest land vegetations of which we have any sufficient record specialized forms of Equisetales, Lycopodiales, Sphenophyllales and Filicales existed, so that we are reduced to hypotheses founded on the careful comparison of the recent and extinct members of these groups.

Hydropterideae.-Two very distinct orders of heterosporous Filicales, the Salviniaceae and the Marsiliaceae, are included in this group. The difficulty of determining their exact relationship to the other orders of Ferns is increased by the more or less completely aquatic habit of the plants and the modifications and reductions in structure associated with this.

In these respects, in the megaphyllous habit and in certain anatomical features, the Ophioglossaceae approach the Filicales.

The important bearing of this question on the relationship of the Ophioglossaceae to the phyla of the Filicales and Lycopodiales will be obvious.

It remains to be mentioned that the Isoetaceae have been regarded as more nearly allied to the Filicales than to the former, near which they are here placed.

The Sphenophyllales are only known in a fossil state, while the Equisetales, Lycopodiales and Filicales include both living and extinct representatives.

Filicales.

the Equisetales (Horse-tails), the Lycopodiales (Club mosses), the Filicales (Ferns) and Cycadofilices, the Sphenophyllales and Cordaitales.

Filicales and Gymnosperms, and known as the Cycadofihices, a group in which, curiously enough, the reproductive organs remained undiscovered for some time after the anatomy of the vegetative organs was sufficiently well known to afford clear evidence of their true affinities.

filicales's Meaning':

true (leptosporangiate