Title: IN SITU POLLEN OF ALASIA, A SUPPOSED STAMINATE INFLORESCENCE OF TROCHODENDROIDES PLANT
Abstract: Genus Alasia GOLOVNEVA, 2006 includes staminate inflorescences repeatedly found together with Trochodendroides type leaves and Trochodendrocarpus - Joffrea type infructescences and is considered as the most probable pollen organ of the Trochodendroides plant. In situ pollen grains were extracted from the anthers of two Alasia flowers and detached stamens of cf. Alasia from the Paleocene of Amur Province, Russian Far East. The morphology of the flowers was interpreted as the fascicles of stamens with dorsifixed introrse anthers adpressed to the subtending bract before exsertion. The pollen grains are small tricolpate with long colpi and a variably microreticulate to verrucate-scabrate ornamentation. Alasia differs from Cercidiphyllum in both staminate structures and pollen morphology suggesting hama- melid affinities.
Publication Year: 2008
Publication Date: 2008-01-01
Language: en
Type: article
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Cited By Count: 9
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