Liliaceae
Lab dissection (Lys)
Stigma and ovary.
Anther in details.
Style, stigma, and pollen tubes.
Filament protected by a natural membrane.
Slides microscopes already at home:
Ovary cross section/embryo sac.
Pre-meiosis phase where DNA is copied.
Meiosis
Final stage, post-meiosis
Plate: drawing and observations
Notes
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Monocots
Order: Liliales
Family: Liliaceae
Subfamily: Lilioideae
Tribe: Lilieae
Genus: Lilium
35.000 species.
Pollinated primarily by fleas, bees, epidoptera perianth (6 tepals).
Usually all petaloid
Usually basally connate
Twisted in bud
Rhizomes. Bulbs or corbibs.
Insect uses a large tepal as a landing platform.
Insect may transfer pollen from a previous flower to the receptive stigma while it probes for nectar through the tube (tepal + style branch) further down dusted with new pollen from the anther. Only encounters new pollen on the way up.
Sources
Plate to complete from the book “Botany Illustrated. Introduction to Plants, Major Groups, Flowering Plant Families” by Janice Glimn-Lacy and Peter B. Kaufman. p. 128
Susannah Graedel's plate
Video about the dissection of a lys flower (in French): http://tice.svt.free.fr/spip.php?article154
Scientific classification on wikipedia: https://en.wikipedia.org/wiki/Lilium
The Science behind Flowers, Dick Rauh (2020), p. 35
Botanique, systématique moléculaire, Guignard and Dupont (2005), p. 106
Slides microscopes from Jeulin.com (Pre-meiosis to post-meiosis, ovary cross section and style, stigma, and pollen tubes ).