BIOL 3560 Lecture Notes - Perianth, Gynoecium, Stamen
Document Summary
Perianth or no distinct sepals and petals: in most cases, petals are thought to have been derived from stamens that lost sporangia, since both have a single vascular strand, in water lilies, petals likely derived from sepals, specialization fusion of petals and/or sepals into a tube, androecium, ancestral stamens broad, may also be scented, specialization. Sterilized, form nectar secreting glands: nectaries, gynoecium, no pollen production, ansecteral carpels leak like with no specialized entrapment of pollen grains, carpels may be incompletely closed, specialization.
