Astrophytum ornatum (© R.T. Bárcenas, 2018).

Applications for Personal Membership shall be submitted on an official form provided by the Secretary or downloaded from this IOS website (IOS_application_form). All applications shall be considered by the Executive Board, at whose discretion admission shall be granted. Applications for Student Membership shall be approved and countersigned by the student’s Supervisor. Student Membership shall be for two years in the first instance, renewable on request for a further two years only.

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