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Illustration from 1911 Encyclopædia Britannica, article BRYOPHYTA.
Original caption: FIG. 1.—Archegonia of Marchantia polymorpha. (After Sachs.)
1. Mature but unopened archegonium. e, Ovum; b, ventral-canal cell; d, lid-cells of neck.
2. Archegonium ready for fertilization; a passage leads down to the rounded ovum e.
3. Archegonium after fertilization; the fertilized ovum is developing into a sporogonium f; d, perianth.
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Date et heure | Vignette | Dimensions | Utilisateur | Commentaire | |
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actuel | 7 novembre 2006 à 22:59 | 870 × 698 (15 kio) | Laverock~commonswiki | Illustration from 1911 Encyclopædia Britannica, article BRYOPHYTA. Original caption: F<small>IG.</small> 1.—Archegonia of ''Marchantia polymorpha''. (After Sachs.) 1. Mature but unopened archegonium. ''e'', Ovum; ''b'', ventral-canal cell; ''d'', |
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