ASCOMYCETES n.
A large class of higher fungi distinguished by septate hyphæ, and by having their spores formed in asci, or spore sacs. It comprises many orders, among which are the yeasts, molds, mildews, truffles, morels, etc. -- As`co*my*ce"tous (#), a.
CHEMOTAXIS; CHEMIOTAXIS n.
The sensitiveness exhibited by small free-swimming organisms, as bacteria, zoöspores of algæ, etc., to chemical substances held in solution. They may be attracted (positive chemotaxis) or repelled (negative chemotaxis). -- Chem`o*tac"tic (#), a. -- Chem`o*tac"tic*al*ly, adv.
CLUB n.
ow species is Lycopodium clavatum, but other Lycopodia are often called by this name. The spores form a highly inflammable powder. -- Club root (Bot.), a disease of cabbages, by which the roots become distorted and the heads spoiled. -- Club topsail (Naut.), a kind of gaff topsail, used mostly by yachts having a fore…