The Collaborative International Dictionary of English v.0.48:

Hyphomycetes \Hy`pho*my*ce"tes\, n. pl. [NL., fr. Gr. ? a web +
   ?, ?, a mushroom.] (Bot.)
   One of the great division of fungi, containing those species
   which have naked spores borne on free or only fasciculate
   threads. --M. J. Berkley.
   [1913 Webster]