An Illustrated Survey of Orchid Genera by Tom Sheehan

By Tom Sheehan

Greater than a hundred and fifty orchid genera are defined, each one followed through a very good Marion Sheehan representation that exhibits a consultant species; all reveal a similar buildings in related perspectives in order that the reader can simply examine the diversities between genera. In 1995, the authors bought the yank Orchid Society's Gold Medal of accomplishment.

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Taxonomists use an orderly method of dividing a family in descending order from the family category to the species or even variety (Fig. 15). The divisions and the naming of these divisions are governed by the International Code of Botanical Nomenclature (ICBN). Using Cattleya dowiana var. aurea as an example, the orchid family is broken down as follows: Family: Orchidaceae The family category is a natural unit combining a number of characteristics that occur in the members Page 24 of this group.

H: Miltoniopsis. I: Ludisia. J: Calanthe. K: Bulbophyllum. L: Dendrobium. M: Doritis. N: Rhynchostylis. O: Rodriguezia. P: Arachnis. Q: Trichopilia. R: Eulophia. S: Brassia. T: Gongora. U: Cycnoches. V: Grammatophyllum. W: Maxillaria. X: Ansellia. Y: Phragmipedium. Za: Vanilla pollen mass. Zb: Vanilla anthers. The best way to understand an orchid blossom is to take a flower in hand and dissect it segment by segment. Looking at a Cattleya face view (Fig. 8), the labellum (lip) is the most prominent feature.

Page 23 Orchid Classification Orchid classification has been developing for many years. The famous taxonomist John Lindley started the first major classification of the orchid family around 1825 and worked on it for approximately 40 years. He was followed by many other renowned taxonomists such as Heinrich G. L. Reichenbach, Ernst H. H. Pfitzer, Robert Rolfe, Oakes Ames, and Robert Dressler. Around the beginning of the 20th century, Rudolf Schlechter began his reclassification of the family based mainly on the work of Pfitzer.

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