Haplostemonous

Hap′lo‐stem″o‐nous (hăp′lō̍‐stĕm″ō̍‐nŭs), a. [Gr. απλὅοσ simple + στήμων a thread.] (Bot.) Having but one series of stamens, and that equal in number to the proper number of petals; isostemonous.