Pharmaceutical botany - Lighthouse Survival Blog

THE SAC FUNGI 6
Order 3. Peronosporales.—Mildews, destructive parasites, living
in the tissues of their hosts and effecting pathologic changes. Ex.:
Albugo, the blister blight, a white rust attacking members of the
Cruciferae and Phytophthora, producing potato rot.
Sub-class B.— Zygomycetes
(Sexual apparatus shows isogamy)
Order i. Mucorales, the black molds, mostly saprophytic. Ex.:
Mucor Mucedo, Rhizopus nigricans.
Class II. Ascomycetes, the Sac Fungi
Mycelium composed of septate filaments and life history character-
Fig. 35.—A single perithecium of Clmiceps Fig. 36.—Asci containpurpurea,
magnified, showing the contained ing the long, slender ascoasci.
(From Sayre.) pores. (From Sayre.)
ized by the appearance of a sac called an ascus in which ascospores are
formed. The largest class of fungi.
Order i. Protoascales, the yeasts (Saccharomycetes) (position
doubtful).
Order 2. Pezizales or cup fungi. Ex. : Peziza and Ascobolus.
Order 3. Tuberales, the truffles.
Order 4. Plectascales, the blue and green molds. Ex. : Aspergillus
and Penicillium.