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Our Mission is to serve an educational function in providing the general public with botanical and horticultural information on the genus Encyclia and other orchidaceae that have once been classified as Encyclia, in order to promote the cultivation, propagation, conservation, hybridization and exhibition of these orchids both ex and in situ.

An  Affiliate Organization of the American Orchid Society

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Interesting new article by Mauro Rosim:   

xEncylaelia intermedia F.E.L.Miranda,  A natural inter-generic hybrid from the "Gerais" in Brazil, South America.    In the Members Only area.


ENCYCLIAS:  Why, How, and Whereas


By Mike Bechtold, VP for Publications, Stewart Chipka, Past President, and Isabel Lopatin, President

Why:  From a distance, the many flowers on a tall Encyclia inflorescence shimmer alluringly, and those species that have a mounding habit create a striking architectonic form.  Since the flowers are usually not crowded on the spike, it's also easy to appreciate them as individuals, and many species are fragrant.  One more excellent quality of the genus is that many of the species flower in summer, so the blooming season of an Encyclia collection can run from March through September, or even February through October.  Flowers typically last five weeks, so the show goes on and on.  Encyclias range in size from small to huge, so everyone - from windowsill growers to those with back yards in Florida - can find species and hybrids to fit their space. 

How:  Encyclias are not rainforest plants:  many species are found in mixed oak and pine forest where winter is a very dry season and the plants are completely exposed to sunlight.  The trick to growing Encyclias is to meet their seasonal moisture requirements without having them rot in summer or shrivel in winter.  Most species are intermediate to warm growers, but some get cool winters or at least tolerate cold dips.  Articles in the Encyclia Enthuisiasts newsletter describe the temperature and moisture variations to which individual species are exposed in their natural habitats.  We also ask our members to tell how they grow a particular Encyclia so other growers in their part of the world get practical advice. 

Whereas:  Encyclia is currently a genus of approximately 150 species that closely resemble each other.  The taxonomic path that led to this is complex, the current grouping having been solidified in 1997 when Wesley Higgins1 split about 100 species from what had been a very broad sense of Encyclia into the almost equally broad genus Prosthechea.   Because this split is so recent, plenty of orchid growers have plants that are labeled Encyclia but don't fit the current definition.  Therefore, part of defining Encyclia means explaining what it is not, as well as what it is.  In order to do this, we need to take a quick look at the history of the genus. 

In the 18th century, Carolus Linneaus lumped epiphytic orchids into the genus Epidendrum, a name that means "upon a tree".  As more epiphytic orchids were examined, it became clear that more generic classifications were necessary.  John Lindley created the genus Cattleya in 1821, and in 1828, William Jackson Hooker saw an orchid, collected near Rio de Janeiro, that he named Encyclia viridiflora.  It thus became the type species of the genus, but is a bit of a mystery because it hasn't been seen since.

The word "encyclia" means encircled, and refers to the fact that the lateral lobes of the lip encircle the column, which houses the flower's reproductive mechanism.    If you look at Cattleyas, you will see that they have the same characteristic, and both genera also have four pollinia.  Although Hooker knowingly named Encyclia for a characteristic shared with Cattleya, he thought that the different growth habit and the less showy flowers were sufficient distinctions for establishing a new genus.  Nonetheless,. the name never took.  It would have made some sense to call the Encyclia species Cattleya, but they remained epidendrums for more than another hundred years. 

In 1936, Ames, Hubbard, and Schweinfurth2 grouped the pseudobulbous Epidendrums into a section of the genus and called it Encyclium,.  They didn't consider this a concept that could be used for taxonomic classification -  they mostly did it because part of their work is a key to Epidendrum species, and the first step in the keying process was to determine if a plant had pseudobulbs or reedstems.   In July of 1961,. Robert L. Dressler published "A Reconsideration of Encyclia (Orchidaceae)"3 , and this is when the genus Encyclia came into its own.  Dressler discussed the differences in flower structure between epidendrums and encyclias.  If the lip was completely adnate to the column, the species was an Epidendrum.  If it was partially adnate or not at all, it was an Encyclia.  The other important structural difference was that of the rostellum, which is split in Epidendrum flowers.   Dressler did not consider the pseudobulb/reedtsem distinction to be crucial.  While he thought that all encyclias had pseudobulbs, he thought that some species with pseudobulbs were epidendrums.  Dressler considered Encyclia to have several sections and groups within these sections.  The genus grew to hold 250 species until Higgins moved many species to Prosthechea, leaving Encyclia to contain what Carl Withner called :"the true encyclias".4  Volume 2, Issue 4 of the Encyclia Enthusiasts newsletter summarizes the recent work of Carl Withner and Patricia Harding5, in which the Higgins's Prosthechea is further split into a number of genera, somewhat the way Dressler split Encyclia into subsections.   

Encyclia Enthusiasts embraces the current definition of Encyclia, but we include all species ever known as Encyclia in our mission statement.  This was a subject of discussion at our founding meeting, and we decided to be inclusive because people weren't yet accustomed to the narrow sense of the term.  This gives us the opportunity to tell people why these species are not truly encyclias, and we also consider them in their own right in our publications. 

How do you know if an orchid you own that is labelled "Encyclia" is a true Encyclia or not?   One basic distinction is that no Encyclia inflorescence arises from a sheath.  This means that vitellina, for example, is not an Encyclia.  No Encyclia has flattened pseudobulbs.  This means that prismatocarpa,  is not an Encyclia.  Also, no Encyclia flower is non-resupinate, which means that cochleata and the other cockleshell orchids are not encyclias.   . 

As we look at all the true Encyclia species, it is easy to spot their common characteristics. One must study each species closely to tell the differences between some of them, and often plants are confused when not in bloom. Once in bloom however, the subtle differences are more apparent and make identification of the specific plant much easier to establish.

We hope that this web site will provide you with all the information you will need to truly enjoy the Encyclia species and their hybrids.

1.  Higgins, W.E:  "A Reconsideration of the Genus Prosthechea (Orchidaceae)".  Phytologia, 82(5):370-383.

2.  Ames, Oakes, F. Tracy Hubbard, and Charles Schweinfurth:  The Genus Epidendrum in the United States and Central America. Botanical Museum, Cambridge, Massachusetts, 1936.

3.  Dressler, Robert L:  "A Reconsideration of Encyclia (Orchidaceae).  Brittonia: 13:253-266.   A publication of the New York Botanical Garden

4.  Withner, Carl:  The Cattleyas and Their Relatives:  The Bahamian and Caribbean Species, p. 11.  Timber Press, Portland, Oregon, 1996.

5.  Withner, Carl and Patricia Harding:  The Cattleyas and Their Relatives:  The Debatable Epidendrums.  Timber Press, Portland, Oregon, 2004.

Photos used with permission  © 2006 Greg Allikas -  www.orchidworks.com

 

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Last modified: October 07, 2006