heptandria

from The Collaborative International Dictionary of English v.0.48

Heptandria \Hep*tan"dri*a\, n. pl. [NL., fr. Gr. "epta` seven +
   ?, ?, man, male: cf. F. heptandrie.] (Bot.)
   A Linn[ae]an class of plants having seven stamens.
   Heptandrian