Urtümliche und moderne Tentakel unter dem Mikroskop
Hartmeyer, I. & Hartmeyer, S.
(2008) DAS TAUBLATT (GFP)
Leaves and tentacles of different Drosera
species are examined with a microscope, focussing on the leaf edges. While the
archaic species (D. arcturi and D. regia) show only simple stalked
glands, three different types of marginal tentacles (T1 = symmetrical glandular
head, T2 = bisymmetrical none glandular head, T3 = bisymmetrical none glandular
head combined with a hinge in the tentacle stalk) are found with the modern
sundews. The basic morphology and ontogenetic development of seedlings is
discussed, and due to their tentacles the Queensland sundews appear to be
somewhere in between. Section Arachnopus is distinct, the members
modified their tentacles not to fix prey like the modern Drosera, but to
increase the effectivity of attraction.