hetero theca

[Prefix hetero-, and Lat. theca Gr. thēke a hull, a covering, an envelope.] Bot.: The typical genus of the sub-tribe Heterothecese (q. v.). -er-ô-the-çě-æ, s. pl . [Mod. Lat. heterothec(a); Lat. fem. pl. adj. suff. -eœ .] Bot.: A sub-tribe of composites, tribe Asteroideæ. hět-er-ot-o-mous, a . [Pref hetero-; Gr. tomē =a cutting, and Eng. suff.- ous .] Min.: Having a different cleavage from that normal to the species. =place.]