The International Aroid Society has a long history of affiliation with local Aroid groups. Though there are not many chapters currently active, a West Coast Chapter based in California has begun what is hopefully a new trend.
MidAmerica - Based in Oklahoma, Arkansas, Texas and Louisiana
Start Your Own Chapter
Starting a local IAS chapter is remarkably simple.
Find local members by using the member directory search function, asking around on Aroid-L and looking over the Aroiders list. Other local places to find members: garden clubs, local plant societies, School botany clubs and horticultural programs, botanical conservatories and arboretums.
Get involved with other local plant groups - give a talk on the wonders of Aroids, put up a display at a local Fair, speak to a botany club and promote your chapter.
Contact those members and find a date and place you can meet. Remember - the chapter doesn't have to be huge - just 3 or 4 people can make a very interesting meeting. It could be held at a botanic garden, public garden, zoo, school or someome's home.
Announce your meetings on Aroid-L, through mailing lists and meetings of local plant societies, through flyers at nurseries and landscaping businesses.
Some first meeting ideas:
Have people bring plants to show off or trade - availability of plants is a huge draw.
Plan to give a tour of a collection of plants, however small, at your meeting location.
Ask somebody to talk about a trip they recently made. Even if it was just to a local botanic garden.
Decide on a time and place for the next meeting with your new friends. Most chapters find that meeting between two and four times a year provides a good balance between comfort, novelty and excitement.