Vegetative anatomy of subtribe Habenariinae (Orchidaceae)
نویسندگان
چکیده
منابع مشابه
Radicular anatomy of twelve representatives of the Catasetinae subtribe (Orchidaceae: Cymbidieae).
Considering that the root structure of the Brazilian genera belonging to the Catasetinae subtribe is poorly known, we describe the roots of twelve representatives from this subtribe. For anatomical analysis, the roots were fixed in FAA 50, preserved in ethanol 70% and sectioned at its medium region using razor blades. The sections were stained with 0.05% astra blue and safranin and mounted in g...
متن کاملVegetative Anatomy and Familial Placement of Tovaria
Leaf, stem, node, and wood anatomy are examined for Tovaria pendula collections from Peru. Features claimed to separate Tovaria from Capparaceae have hitherto included exstipulate nodes and paracytic stomata. However, the presence of stipules and of anomocytic stomata is demonstrated, together with occurrence of probable myrosin cells in leaves and stems. The nodal type is one reported from Cap...
متن کاملMultiple isoforms of phosphoenolpyruvate carboxylase in the Orchidaceae (subtribe Oncidiinae): implications for the evolution of crassulacean acid metabolism
Phosphoenolpyruvate carboxylase (PEPC) catalyses the initial fixation of atmospheric CO2 into oxaloacetate and subsequently malate. Nocturnal accumulation of malic acid within the vacuole of photosynthetic cells is a typical feature of plants that perform crassulacean acid metabolism (CAM). PEPC is a ubiquitous plant enzyme encoded by a small gene family, and each member encodes an isoform with...
متن کاملComparative anatomy of the nectary spur in selected species of Aeridinae (Orchidaceae).
BACKGROUND AND AIMS To date, the structure of the nectary spur of Aeridinae has not been studied in detail, and data relating to the nectaries of ornithophilous orchids remain scarce. The present paper compares the structural organization of the floral nectary in a range of Aeridinae species, including both entomophilous and ornithophilous taxa. METHODS Nectary spurs of Ascocentrum ampullaceu...
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ژورنال
عنوان ژورنال: Botanical Journal of the Linnean Society
سال: 1997
ISSN: 0024-4074
DOI: 10.1006/bojl.1997.0114