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Alabama Orchid Society
Alamo Orchid Society
Amherst Orchid Society
Ann Arbor Orchid Society 
Arkansas Orchid Society
Atlanta Orchid Society
Bakersfield Orchid Society
Batavia Orchid Society
Baton Rouge Orchid Society
Big Sky Orchid Society, Inc.
Black Hills Orchid Society
Blackhawk Orchid Society
Boulder Orchid Society
Brazos Valley Orchid Society
Brevard County Orchid Society 
Bucks County Orchid Society
Cabrillo Orchid Society, Inc.
Cape and Islands OS
Cape Fear Orchid Society
Carmel Orchid Society
Catawba Valley Orchid Society
Catocton Orchid Society 
Cen-Tex Orchid Society
Central California OS
Central Coast Orchid Society
Central East Texas OS
Central Florida Orchid Society
Central Illinois Orchid Society
Central Iowa Orchid Society
Central Jersey Orchid Society
Central Louisiana OS
Central Missouri OS
Central New York OS 
Central Ohio Orchid Society 
Cherry City Orchid Society
Coalition For Orchid Species
Coastal Carolina OS
Coastal Valley OS
Colorado Springs OS
Conejo Orchid Society
Corpus Christi Orchid Society
Daytona Beach OS
Deep Cut Orchid Society
Delaware Orchid Society
Delray Beach Orchid Society
Denver Orchid Society
Desert Valley Orchid Society
Deutsche Orchideen-Gesellschaft E.V.
Diablo View Orchid Society
Dunes-Kalamazoo OS
East Alabama Orchid Society
Escalante Orchid Society
Five Cities Orchid Society
Five Valleys Orchid Society
Florida West Coast OS
Foothills Orchid Society
Fort Worth Orchid Society
Fraser Valley Orchid Society
Galveston Orchid Society
Genesee Region OS
Global Paph. Alliance
Gold Coast Cym. Growers
Golden Gate Cymbidium Soc.
Grand Valley Orchid Society
Greater Baton Rouge OS
Greater Cincinnati OS
Greater Lansing OS
Greater Las Vegas OS 
Greater New York OS
Greater North Texas OS
Greater Omaha Orchid Society
Greater Pensacola OS
Greater Philadelphia OS
Green Mountain OS 
Gulf Coast Orchid Society 
Heart of Dixie Orchid Society
Heart O'Texas Orchid Society
Hi-Country Orchid Society 
Hill Country Orchid Society
Hilo Orchid Society 
Hollin Hills Orchid Society
Honolulu Orchid Society
Houston Orchid Society
Illinois Orchid Society
Illowa Orchid Society
Indiana Orchid Society
Internat. Oncidiinae Alliance
Jacksonville Orchid Society
Kaimuki Orchid Society
Kansas Orchid Society 
Kentucky Orchid Society
Kona Orchid Society
Lafayette Orchid Society
London Orchid Society
Long Beach Amateur OS
Maine Orchid Society
Malibu Orchid Society
Malihini Orchid Society
Manitoba Orchid Society
Manhattan Orchid Society
Marin Orchid Society
Maryland Orchid Society
Mary's Peak Orchid Society
Matinecock Orchid Society
Maui Orchid Society
McAllen Internat.Orchid Society
Memphis Orchid Society
Miami Valley Orchid Society
Michiana Orchid Society
Michigan Orchid Society 
Mid-Coast Orchid Society
Middle Tennessee OS
Mid-Lake Orchid Society
Mississippi Orchid Society
Mt. Baker Orchid Society
Naples Orchid Society 
National Capital Orchid Society
Native Orchid Restor. Project
New Hampshire OS 
New Mexico Orchid Guild
New Orleans Orchid Society 
Newport Harbor Orchid Society
Niagara Frontier Orchid Society
Niagara Region Orchid Sociaty
North Carolina Piedmont OS
North Idaho Orchid Hobbyists
North Jersey Orchid Society
Northeast Alabama OS 
Northeast Louisiana OS 
Northeastern Wisconsin OS
Northwest Orchid Society
Oklahoma Orchid Society
Olympia Orchid Society
Orange County Orchid Society
Orchid Forum of Sacramento
Orchid Growers Guild
Orchid Hobbyists of-Delmarva
Orchid Prom Assoc Rep.China
Orchid Soc. of Greater Kansas
Orchid Society of Alberta
Orchid Society of Arizona
Orchid Society of California 
Orchid Society of Minnesota
Orchid Society of Ozarks
OrchidSafari
Oregon Orchid Society
OS of Greater St. Louis 
OS of Jefferson, Inc.
OS of Northern Nevada
OS of Nova Scotia c/o NS Museum of Nat. History
OS of Santa Barbara 
OS of Southern California 
OS of Western Pennsylvania
OS Royal Botanical Garden 
Pacific OS of Oregon
Paducah Orchid Society
Palomar Orchid Society
Paso Del Norte Orchid Society
Peninsula Orchid Society
Peoria Orchid Society
Pilgrim Colonies OS
Pinelands Orchid Society
Prairie State Orchid Society
Puerto Rico Orchid Society
Ramapo Orchid Society
Red River Orchid Society
Richmond Orchid Alliance
Ridge Orchid Society 
Riverside San Bernardino OS 
Rogue Valley Orchid Society
Sacramento Orchid Society
San Diego County OS
San Fernando Valley OS 
San Francisco Orchid Society
San Gabriel Valley Hobbyists OS
San Joaquin Orchid Society
Sandhills Orchid Society
Santa Clara Valley OS 
Santa Cruz Orchid Society
Santa Maria Orchid Society
Saskatchewan Orchid Society
Sonoma County OS
South Bay Orchid Society
South Carolina Orchid Society
South Central Washington OS
South Coast Orchid Society
South Mississippi OS
South Texas Orchid Society 
Southeastern Penn. OS
Southern Ca Orchid Species 
Southern Ontario Orchid Society
Southern Tier Orchid Society
Southland Orchid Show
Southwest Pennsylvania OS
Spokane Orchid Society
Springfield Orchid Society
Suffolk Orchid Society
Sunset Empire Orchid Society
Susquehanna Orchid Society
Tacoma Orchid Society
Tampa Bay Orchid Society
Tennessee Valley OS 
Terrebonne Orchid Society
The Cape Orchid Society
The Tucson Orchid Society
Three Rivers Orchid Society
Tidewater Orchid Society
Treasure Valley Orchid Society
Triad Orchid Society
Triangle Orchid Society
Tropical Plant Society
Tulsa Orchid Society
Umpqua Orchid Society 
Utah Orchid Society
Vancouver Orchid Society
Ventura County Orchid Society
Victoria Orchid Society
Virginia Orchid Society
Volusia County Orchid Society
West Shore Orchid Society
Willamette Orchid Society
Wisconsin Orchid Society