Definitions
from The Century Dictionary.
- An order of cryptogamic plants of the class Hepaticæ, characterized by athalloid, dorsiventral proembryonal generation, the antheridia and archegonia borne in groups on the surface of the thallus or on stalked receptacles, the sporogonia consisting of a spherical capsule with or without a short stalk.
from the GNU version of the Collaborative International Dictionary of English.
- proper noun An oder of liverworts with gametophyte differentiated internally.
from Wiktionary, Creative Commons Attribution/Share-Alike License.
- proper noun A taxonomic
order within theclass Marchantiopsida — thechambered liverworts .
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- noun liverworts with gametophyte differentiated internally
Etymologies
from Wiktionary, Creative Commons Attribution/Share-Alike License
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Examples
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The Marchantiales are a series of thalloid forms, in which the structure of the thallus is specialized to enable them to live in more exposed situations.
Encyclopaedia Britannica, 11th Edition, Volume 4, Part 3 "Brescia" to "Bulgaria" Various
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In the Marchantiales the chief supply is obtained from the soil by the rhizoids, and its loss in transpiration is regulated and controlled.
Encyclopaedia Britannica, 11th Edition, Volume 4, Part 3 "Brescia" to "Bulgaria" Various
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In most species of _Riccia_ the air-chambers are only narrow passages, but in the other Marchantiales they are more extended.
Encyclopaedia Britannica, 11th Edition, Volume 4, Part 3 "Brescia" to "Bulgaria" Various
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Marchantiales, can be recognized, but more often a prolonged dry season is survived in some resting state.
Encyclopaedia Britannica, 11th Edition, Volume 4, Part 3 "Brescia" to "Bulgaria" Various
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The Marchantiales form an obviously natural evolutionary group, and the same is probably true of the Jungermanniales, although in neither case can the partial lines of progression within the main groups be said to be quite clear.
Encyclopaedia Britannica, 11th Edition, Volume 4, Part 3 "Brescia" to "Bulgaria" Various
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The lower members of the Jungermanniales are also thalloid, but the thallus never has the complicated structure characteristic of the Marchantiales, and progress is in the direction of the differentiation of the plant into stem and leaf.
Encyclopaedia Britannica, 11th Edition, Volume 4, Part 3 "Brescia" to "Bulgaria" Various
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Such a form as _Sphaerocarpus_, which has features in common with the lower Marchantiales, enables us to form an idea of the divergence of the two groups from a common ancestry.
Encyclopaedia Britannica, 11th Edition, Volume 4, Part 3 "Brescia" to "Bulgaria" Various
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P. 703, Marchantiales: "Marchantia polymorpha and Lunularia": 'Marchantia, polymorpha' in original p. 707, Fig. 14: "Andreaea petrophila": 'pelrophila' in original
Encyclopaedia Britannica, 11th Edition, Volume 4, Part 3 "Brescia" to "Bulgaria" Various
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The Marchantiales are divided into a number of groups which represent distinct lines of advance from forms like the
Encyclopaedia Britannica, 11th Edition, Volume 4, Part 3 "Brescia" to "Bulgaria" Various
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