1) Monogamous 2) Monogynic 
• (a.) Of or pertaining to Monogynia; having only one style or stigma.
Mo·nog'y·nous adjective [ Confer French monogyne .] (Botany) Of or pertaining to Monogynia; having only one style or stigma. 
With only one style.
[adj] - having one head or chief wife at a time (along with concubines)
monogynous 1. In botany, having only one pistil, style, or stigma; belonging to the order Monogynia. 2. Pertaining to asexual reproduction or asexually reproducing organisms. 3. The condition of having a single fertile female as in the colony of many social insects or, in higher forms, having only one female sexual partner.
monogynic adjective having one head or chief wife at a time (along with concubines)