Comparative vegetative anatomy and classification of Diseae (Orchidaceae)

摘要: Abstract The leaf, stem, root, tuber and dropper anatomy of the orchid tribe Diseae (including subtribes Satyriinae, Disinae, Brownleeinae, Huttonaeinae Coryciinae) is reviewed. study largely based on investigations 123 species, data from several previous publications have also been incorporated. Two characters were identified as being taxonomically valuable: (1) presence sclerenchyma caps associated with leaf vascular bundles, (2) degree dissection siphonostele (‘polystelic’ or ‘monostelic’). phylogenetic analysis shows that anatomical do not change basic structure a cladogram morphological characters. taxa are discussed basis data. Subtribes Satyriinae (excluding anatomically unusual genus Pachites ), Huttonaeinae, Coryciinae uniform in critical However, subtribe Disinae rather diverse vegetative anatomy. Disa sect. Micranthae differs rest its occurrence foliar bundle ‘polystelic’ tubers supports incorporation Herschelianthe Stenocarpa.