BSA Online Image Collection, Angiosperms - Magnoliophyta

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Coleus (dicot) SAM m.l.s.	Alternanthera SAM	Zea mays root m.l.s.	Zeamays RAM close-up
Pisum sativum RAM open organization	Pisum sativum RAM close-up	Aristolochia vessel element	Liriodendron vessel element
Ephedra (Gnetophyta) vessel element	Pine tracheids with circular bordered pits	Liriodendron vessel element, showing elongate bordered pits	Acer wood (secondary xylem), t.s.
Drimys wood, t.s.	Liriodendron wood, t.s., diffuse porous	Quercus (oak) wood, t.s. ring porous	Fraxinus (ash) wood, t.s., paratracheal axial parenchyma distribution
Liriodendron wood, t.l.s. multiseriate rays	Liriodendron wood, close-up t.l.s.; scalariform perforation plate	Drimys wood, radial l.s.; side view of ray in upper left corner	Quercus (oak) wood, r.l.s., homocellular ray (all procumbent cells)
Liriodendron wood, r.l.s., heterocellular ray (upright cells on margins of ray, procumbent cells in center of ray)	Clematis developing flower – stage II - tepals	Clematis developing flower – stage III - stamens	Clematis developing flower – stage IV – beginning of carpel initiation
Clematis developing flower – stage IV – young carpels (“airline seat” – stage)	Clematis developing flower – stage V – developing carpels	Clematis developing flower – stage V – close-up – carpel development	Lilium kelleyanum – flower (monocot)
Lilium bud x.s.	Lilium bud – early anther development – PMC/microsporocyte stage	PMC close-up	Early prophase I
Early prophase I close-up	Late prophase I	Late prophase I – diakinesis close-up	Metaphase I
Metaphase I close-up	Metaphase II close-up	Telophase II	Tetrad stage of microspores
Mature anther x.s.	Stigma and style with pollen grains and tubes – l.s.

BSA Online Images

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