Pteridophyta


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Pteridophyta

[‚ter·ə′däf·əd·ə]
(botany)
The equivalent name for Polypodiophyta.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
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ferns

ferns

This is a debatable plant. Must eat cooked or steamed, not raw, although some people do eat fiddleheads raw and end up getting throat and gastric cancers. Fiddleheads are the young furled (coiled up) heads of a young fern. Asians dip them into boiling water, then dry them and then grind them into powder, and whenever they cook food, they add that powder to their food. Apparently it helps emulsify and break down bad fats in the body. You can chop up the stem and steam it, tastes similar to green beans, can be eaten with a little bit of butter and salt. To cook fiddleheads, remove the yellow/brown skin, then boil the sprouts twice with a change of water between boilings to remove toxins. The roots of the common Male Fern (Dryopteris filix-mas), was used to kill tapeworms, but many consider it too toxic. When using ferns, consult with local expert to double check. Some are carcinogenic.
Edible Plant Guide © 2012 Markus Rothkranz
The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.

Pteridophyta

 

a large group of higher plants to which are sometimes assigned all higher seedless plants except mosses (Bryophyta). Unlike the bryophytes, the sporophyte—the asexual generation—is well developed and divided, except in Psilotophyta, into stems, leaves, and roots. Spores develop, from which emerges the gametophyte—the sexual generation. The gametophyte is poorly developed, almost undifferentiated, and bears sexual organs (in males, antheridia, and in females, archegonia). After fertilization, another asexual generation develops.

The Pteridophyta include ferns, horsetails, clubmosses, selaginellas, isoetes, psilotaceous plants, and many extinct groups of plants. They were formerly regarded as a single taxonomic group —a division (or subdivision)—and were divided into a number of classes. On the basis of an extensive study of the vegetative and reproductive organs of extinct and extant plants, the group Pteridophyta has been divided into several natural divisions, each of which has its own history. These include the Psilotophyta, Lycopodiophyta, Equisetineae, and Polypodiophyta.

The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.
References in periodicals archive ?
(807) Proposal to reject Polypodium pteridioides Reichard and all combinations based on it (Sinopteridaceae: Pteridophyta).
El 11.5% (29 especies) corresponde a Pteridophyta, el 18.7% (47 especies) a monocotiledoneas y el 69.8% (176 especies) a dicotiledoneas.
Other phylums include Spermatophyta, Pteridophyta, Thallophyta, and Bryophyta.
Species Division Class Subclass 1 Adiantum capillus- Pteridophyta Filicinae veneris 2 Capparis cartilaginea Spermatophyta Angiospermae Dicots.
Azolla is a free floating fresh water fern belonging to the family Azollaceae and order Pteridophyta. It is commonly found in tropics and sub-tropics and grows naturally in stagnant water of drains, canals, ponds, rivers, haors-baors and marshy lands.
New species and new records of ferns (Pteridophyta: Polypodiales) from Cocos Island, Costa Rica.
Modern Spore and Pollen Types of Pteridophyta, Gymnospermae and Angiospermae.
Primer registro de Blechnum appendiculatum (Pteridophyta: Blechnaceae) para Nuevo Leon, Mexico.