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Pteridophyta (ferns)

sori, sorus, meiosporangia, indusium, gametophytes

more ferns

sorus with numerous meiosporangia; each meiosporangium showing the annulus closed meiosporangium showing annulus and area of lip cells; open (right) meiosporangium; meiospores

a sorus on the underside of a sporophyll; clusters of meiosporangia; each meiosporangium has meiospores, annulus, lip cells; sorus covered with an indusium meiosporangia; annulus; lip cells; meiospores

fern gametophytes: top left shows gametophyte in the field (similar in appearence to a thallose liverwort);
Middle: above: underside of heart-shapped gametophyte with the antheridia located away from the notch; below an antheridium with sperm and sterile jacket of cells.
Right: above: underside of heart-shaped gametophyte with archegonia near the notch; below archegonium with sterile jacket of cells; neck venter; neck canal cells, ventral canal cell and egg.

go to: botany 105 page, word lists for -vascular plants, fungi, algae, bryophytes, pteridophytes, ferns, gymnosperms, angiosperms


sorus with numerous meiosporangia; each meiosporangium showing the annulus	closed meiosporangium showing annulus and area of lip cells; open (right) meiosporangium; meiospores

a sorus on the underside of a sporophyll; clusters of meiosporangia; each meiosporangium has meiospores, annulus, lip cells; sorus covered with an indusium		meiosporangia; annulus; lip cells; meiospores

fern gametophytes: top left shows gametophyte in the field (similar in appearence to a thallose liverwort); Middle: above: underside of heart-shapped gametophyte with the antheridia located away from the notch; below an antheridium with sperm and sterile jacket of cells. Right: above: underside of heart-shaped gametophyte with archegonia near the notch; below archegonium with sterile jacket of cells; neck venter; neck canal cells, ventral canal cell and egg.