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Notes On The Genus Frondaria (Orchidaceae) With Description Of New Species, Dariusz Szlachetko, Marta Kolanowska, Max Rykaczewski
Notes On The Genus Frondaria (Orchidaceae) With Description Of New Species, Dariusz Szlachetko, Marta Kolanowska, Max Rykaczewski
Turkish Journal of Botany
The specific diversity of Neotropical orchid genus Frondaria is evaluated based on morphological data. Frondaria was considered a monospecific taxon for years; however, our recent studies on Andean orchids indicated that it is actually much more variable. Within Colombian material, we found a species which does not fit the morphological description of F. caulescens and described it here as a new species named F. colombiana . The novelty is characterized by inflorescence being three times as long as the ramicaul, the tridentate leaf apex with middle tooth as long as lateral ones, papillate apices of sepals, and oblong-ligulate lip middle …
Comparative Anatomy Of Elaiophores And Oil Secretion In The Genus Gomesa (Orchidaceae), Natalia Elva Gomiz, Juan Pablo Torretta, Sandra Silvina Aliscioni
Comparative Anatomy Of Elaiophores And Oil Secretion In The Genus Gomesa (Orchidaceae), Natalia Elva Gomiz, Juan Pablo Torretta, Sandra Silvina Aliscioni
Turkish Journal of Botany
Oils are atypical floral rewards in Orchidaceae and are produced by epidermal glands called elaiophores. Flowers of many members of the subtribe Oncidiinae either produce oil or mimic oil-producing flowers of Malpighiaceae. We focus our research on 3 species of Gomesa, namely, G. flexuosa, G. riograndensis, and G. varicosa in order to investigate the presence of elaiophores, their micromorphology and internal structure, and the process of oil secretion. Elaiophores were located using Sudan III and their internal and external features examined using light and scanning electron microscopy, respectively. The presence of elaiophores was confirmed for regions of calli that are …