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The Atlanta Orchid Society Bulletin Affiliated with the American Orchid Society, the Orchid Digest Corporation and the Mid-America Orchid Congress 2001 Recipient of the American Orchid Society’s Distinguished Affiliated Societies Service Award Newsletter Editor: Danny Lentz Society Librarian: Elaine Jacobson Volume 45: Number 7 www.altantaorchidsociety.org July 2004 JULY EVENTS The Meeting: 8:00 PM Monday, July 12, 2004, Atlanta Botanical Garden - Day Hall Mr. Mark Rose, Breckinridge Orchids Mark Rose, the owner of Breckinridge Orchids in North Carolina, will present a wonderful slide show on species Paphiopedilums and will talk about their culture. Mark is well known for his work in Paphs and Phalaenopsis; and, since he grows in a climate similar to Atlanta, he should have a lot of useful information that Atlanta members can apply. He will be bringing plants for sale. You can order plants by phone at 336-656-7991. His website does not appear to be working (www.breckinridgeorchids.com). The cutoff date for preorders is July 8. Inside This Issue Atlanta Orchid Society 2004 Officers…………………………………………..….…………… Page 2 Collector’s Item……Encyclia cordigera (H.B.K.) Dressler……Ron McHatton…..………... Page 2 Events Out and About………………Dates for your Calendar…………...……….…….……… Page 3 Minutes of the June Meeting ………………..….…….…...……….………….…………….… Page 3 The June Exhibition Table (with notes by Ron McHatton)….………………………………..... Page 4 Recent AOS Awards from the Atlanta Judging Center…………………………………………. Page 7 American Cattleyas – book info……………………………………………………………….. Page 9 Second Quarter Exhibition Table Results, Notices……………………………………….……. Page 10 Understanding pH Management and Plant Nutrition part 4 : Substrates…….Bill Argo …….... After Page 10 All contents © Atlanta Orchid Society unless otherwise noted. Page 2 www.atlantaorchidsociety.org July 2004 THE ATLANTA COLLECTOR’S ITEM ORCHID SOCIETY Officers Encyclia cordigera (H. B. K.) Dressler President En-SIK-lee-ah cord-eh-JEER-ah Evan Dessasau, III Tribe: Epidendreae 2431 Elkhorn Drive Decatur, GA 30034 Subtribe: Laeliinae 404-241-4819 Etymology: Greek enkyklein, to surround; in reference to the lip enclosing the column. Vice-President/Programs David Mellard As currently circumscribed, the genus Encyclia includes some 153 3409 Regalwoods Drive species ranging from southern Florida south into Mexico and down into Doraville, GA 30340 South America. The genus is characterized by the presence of 770-270-5758 pseudobulbs and, unlike Epidendrum from which the genus was Secretary separated, the lip is free from the column for most or all of its length. Teresa Fuller The column lacks a column foot and there are four pollinia. 2090 Rockdale Circle Most species are epiphytes and, with the exception of those few Snellville GA 30078 requiring cool conditions, respond well when grown under intermediate 770-972-2634 conditions and light levels at, or slightly exceeding, those provided for Treasurer Cattleya. In many instances if humid conditions can be provided the Scott Smith plants respond well to mounting. 481 W. Ontario Ave. Encyclia cordigera is arguably one of the most readily recognized and Atlanta, GA 30310 sought-after species. It grows from Mexico south to Colombia and 404-752-6432 Venezuela. This species has been known under the names Epidendrum Immediate Past President atropurpureum, and Encyclia atropupurea although Encyclia cordigera Linda Miller predates both of these and is the name that should be used. The plants 135 Pheasant Drive occur in at least two distinct color forms. The one most commonly Marietta, GA 30067 encountered in cultivation, Encyclia cordigera var. rosea has red-brown 770-953-2853 sepals and petals and a rich, dark rose-red lip. Several generations of line Directors breeding have essentially removed the characteristic folding of the lip along its center-line and in highly selected clones, the flowers can have Term Expiring 2004 exceptionally rich color. While this varietal form is most often Frank Decaminada encountered in cultivation it is not the most common in the wild. The (770) 992-8309 Andrew Dott typical wild color form has brown to red-brown sepals and petals and the 404-256-7858 lip is white with a red to purple-violet blotch at the base of the disc. In addition albinistic clones are occasionally seen, which are typically fewer Term Expiring 2005 flowered with green sepals and petals, a white lip, and a central green Mark Reinke blotch at the base of the lip midlobe. 404-622-4872 Jeff Whitfield 706-675-3583 Term Expiring 2006 Richard Ackerman 770-978-6109 Fred Missbach 404-237-1694 Refreshments Photo courtesy of Danny Lentz Photo courtesy of Ron McHatton Page 3 www.atlantaorchidsociety.org July 2004 MINUTES OF THE JUNE MEETING Events Out and About July The meeting was opened by president Evan D. Dessasau,III. Saturday, 7/10. American Orchid Society The May minutes were approved. monthly judging, Atlanta Center, 2 pm, ABG basement workshop. If entering plants, please Fred Missbach reminded everyone of the upcoming annual arrive before 1:30 pm to allow time for research Auction. We were reminded to bring a dish and about the and paperwork. time of the event. He also gave directions to the Lodge and reminded the membership of directions in the Newsletter. Monday, 7/12. Atlanta Orchid Society monthly meeting, ABG, Day Hall. Mark Rose from Fred Missbach, being the Orchid Digest Corp. rep., also Breckinridge Orchids will talk about species spoke to the membership about the Orchid Digest Magazine. Paphs. David Mellard asked the membership to check the final draft August of the roster for corrections. Monday, 8/9. Atlanta Orchid Society monthly David also reminded the membership about greengrowers meeting, ABG, Day Hall. Norman of Norman’s coming up at Ben Lyda's June 26. Orchids will speak about harlequin Phalaenopsis. Plant orders will be accepted An announcement to visitors and latecomers was made until July 30 by calling 1-888-4Orchids. You informing them that our June program was touring the can also visit his website at www.orchids.com to greenhouses. see orchid lists. Preorders get a 10% discount plus free shipping. He will bring plants to sell. Refreshments were served and the ribbon judging was announced by Mark Reinke. Saturday, 8/14. American Orchid Society monthly judging, Atlanta Center, 2 pm, ABG The Raffle was held. basement workshop. If entering plants, please arrive before 1:30 pm to allow time for research With no further business the meeting was adjourned. and paperwork. Respectfully Submitted, E-van D. Dessasau,III JOIN THE ORCHID DIGEST CORPORATION ORCHID DIGEST DUES INCREASE Don’t let the name fool you, the Orchid Digest is a non- Orchid Digest dues are being increased due to ever profit membership-based organization dedicated to orchids. Designed to appeal to the mid-range to rising publication and shipping costs. Effective 9/1/04, advanced grower nothing beats the Orchid Digest. For a single year will be $32 and two years will be $60. just $28/year you get 4 issues of full-color, in-depth Anyone who renews prior to the 9/1 cutoff date can articles about orchids. The magazine is large format and still renew at the old rates ($28/$54) regardless of when the fourth issue of the year is always an extra-special issue devoted to a single genus. their subscription ends. For membership application forms contact Fred Missbach. Page 4 www.atlantaorchidsociety.org July 2004 JUNE 2004 EXHIBITION TABLE AWARDS with notes by Ron McHatton CLASS 1: CATTLEYA ALLIANCE Blue Laelia tenebrosa Hallberg Red Schombocattleya Margaret Brown Collier/Reinke White Laelia tenebrosa Hansen White Brassolaelia Golden Glory Collier/Reinke Laelia tenebrosa : In addition to the dark bronze or coppery flower typical of this species, Laelia Laelia tenebrosa tenebrosa also occurs in at least two other rare color varieties. The clone ‘Walton Grange’ lacks the usual bronze pigmentation resulting in a flower with intense citron-yellow sepals and petals and a white lip veined with reddish tones. There are also at least two clones completely lacking in red or purple pigmentation. The flowers of these clones have yellow sepals and petals and a completely white lip. While this species has a somewhat open form, it has been used extensively in hybridizing because of its ability to intensify pigmentation in its offspring. When mated with C. dowiana or C. aurea, the resulting flowers are an intense, glowing, dark magenta to red. One other interesting observation in breeding is that the typical dark color is dominant in crosses between the normal and yellow clones (the white ribbon winner is from such a cross). CLASS 2: CYMBIDIUM Blue Grammatophyllum marlae ‘Lahing Kayumanggi’ Rinn Grammatophyllum martae : The Philippines is the center of distribution of this genus with 8 or 9 of the 11 species found throughout the island archipelago. All species in the genus respond best to warm, bright conditions. This Philippine species is found in the Negros Occidental region and was described by Quisumbing but apparently never validly published. As with all Grammatophyllum species, the plants are politely referred to as “robust”. Another trait shared with the other species in the genus is the common occurrence of deformed flowers at the bottom Gramatophyllium of the raceme. This deformity is most often the absence of a lip on the lowermost 1-3 flowers Marlae although partial double flowers are also encountered. CLASS 3: DENDROBIUM Blue Den. farmeri Hallberg Red Den. Haleahi Nymph Lentz/Morgan White Den. secundum Hallberg Dendrobium farmeri : This species belongs to the section Callista, a group of about 10 species widespread throughout mainland Southeast Asia. All species grow at moderate to high altitudes in areas with a sharply pronounced dry season. While the species are easy to grow and will adapt Den. farmeri reasonably well to warm conditions, flowering will be poor to absent without a prolonged cool, dry rest.
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