Osmundaceae

T + Ophioglossum vulgatum T + Ophioglossum vulgatum T + Osmundaceae Osmunda cinnamomea L.

Botanical affinities of isolated palynomorphs included in this paper indicate the presence of sphenopsids (Equisetopsids) and ferns (Osmundaceae) during the early Permian period along with gymnosperms (Cycadales, Benniettitales).

stems short, erect, stout; roots matted, wiry 10 Osmundaceae

Osmundaceae es una familia de helechos que se caracteriza por la peculiar y distintiva anatomia del tallo y los esporangios.

First results from conservation studies of chlorophyllous spores of the Royal fern (Osmunda regalis, osmundaceae).

Although no fern macrofossils have been seen in the Newvale leafbeds, spores include Cyatheaceae, Davalliaceae, Dicksoniaceae, Gleicheniaceae, Osmundaceae, Hymenophyllaceae, Polypodiaceae and Psilotaceae.

Sterile and fertile leaves or leaflets strongly dimorphic; fertile portions lacking leafy tissue; flat stipules present at base of leaves; sporangia without well defined annulus (row of thick-walled cells) Osmundaceae

23 Dec 2001.--Type: Osmunda L.; Osmundaceae Bercht.

Both Bower (1923-1928) and Copeland (1947) recognized the Osmundaceae, Schizaeaceae, Hymenophyllaceae, Gleicheniaceae, Matoniaceae, and possibly Cyatheaceae as relatively primitive ("basal") filicaleans and the Marsileaceae and Salviniaceae as distinct, distantly related families of heterosporous ferns.

A stage 1 endodermis is found in Equisetaceae, Lycopodiaceae, Osmundaceae, Marsileaceae, and Salviniaceae.