This second and larger part of the Basidiomycetes is characterised
by its more highly differentiated, _undivided_, club-shaped, or
cylindrical basidia, which generally bear 4 (seldom 2, 6, 8)
apically-placed sterigmata and basidiospores (Fig. 145). The
fruit-bodies are partly _gymnocarpic_ (in the first 3 orders and in
some Agaricaceæ), partly _hemiangiocarpic_ (in orders 3–6 of the
Hymenomycetes and in the Phalloideæ, the fruit-bodies in these orders
are in the young conditions more or less angiocarpic, but later on
generally open below and bear the hymenium on the under surface of the
fruit-body), partly also _angiocarpic_ (in the Gasteromycetes).
[Illustration: FIG. 162.--_Dacryomyces deliquescens_: I
fruit-body (nat. size); II vertical section through the hymenium;
III germinating basidiospore; IV a portion of mycelium with
conidia; V a germinating conidium; VI and VII chains of oidia
more or less strongly magnified; VIII basidiospore of _D.
longisporus_; IX germinating basidiospore of _D. ovisporus_;
X and XI _Calocera viscosa_; X fruit-body (nat. size); XI
basidia with basidiospores (highly magnified); XII _Dacryomitra
glossoides_ (nat. size).]