Author:
Barnes Richard W.,Rozefelds Andrew C.
Abstract
The vegetative and floral morphology of the Tasmanian endemic
Anodopetalum biglandulosum is re-examined and
illustrated. A detailed study of herbarium and fresh material identified a
number of characters that have, in the past, been misinterpreted. The
subsidiary cell arrangement around the stomates is brachyparacytic, and not
anomocytic; the petals are shown to be notched, and not entire; the fruit is a
weakly lignified, septicidally dehiscent capsule, not a berry, and the pollen
is dicolporate, not tricolporate as has been previously reported. The two- and
three-flowered inflorescences and solitary flowers are interpreted as a
reduced cyme, while the leaf is interpreted as a unifoliolate compound leaf.
The vegetative and floral morphology in Anodopetalum is
compared with the closely related genera Schizomeria,
Platylophus and Ceratopetalum.
Features including notched/fringed petals, dicolporate pollen with a
discontinuous (heterogeneous) tectum and weakly heterogeneous wood rays
provide support for interpreting Anodopetalum,
Schizomeria, Platylophus and
Ceratopetalum as a monophyletic group.
Anodopetalum differs from these genera in its strongly
dehiscent fruits and winged seeds.
Subject
Plant Science,Ecology, Evolution, Behavior and Systematics
Cited by
20 articles.
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