The Collaborative International Dictionary of English v.0.48:

Mayaca \Mayaca\ prop. n.
   A small genus of delicate mossy bog plants having white or
   violet flowers.

   Syn: genus Mayaca.
        [WordNet 1.5]

WordNet (r) 3.0 (2006):

Mayaca
    n 1: small genus of delicate mossy bog plants having white or
         violet flowers [syn: Mayaca, genus Mayaca]