capable of producing microconidia (Fig.13.1h).
Fragmenting hyphae(Fig.13.1i)normallyoccur
in asexual fructifications but occasionally in basi-
diocarps (Fig.13.1a, b). Asexual fructifications
are common inD. stillatusbut rare or lacking in
other species of the Dacrymycetes.
III. Basidiocarp Morphology
Basidiocarp morphology is distinct in most
Dacrymycetes species (Figs.13.2and13.5), but
variation during ontogenetic development must
be considered. Thetraditional generic concept
is based predominantly on the morphology
of basidiocarps (Fig.13.5). In contrast to all
other Dacrymycetes, species of Cerinomyces
(Fig.13.8a) have corticioid (resupinate) growth
without definite margins. The flat to slightly
cupulate fructifications of Arrhytidia have
rooting bases and distinct margins. The basidio-
carps of other cupulate genera (Fig.13.5), for
example, Ditiola, Heterotextus, Femsjonia,
Guepiniopsis,andDacryopinax,canbeFig. 13.2Basidiocarps and anamorph fructification (b)
of Dacrymycetales species. (a,b)Dacrymyces stillatus.
(a) Basidial stage with hymenium covering whole upper
side. (b) Conidial stage with hyphal fragmentation
in whole fructification. (c) Dacrymyces variisporus,
well-developed basidiocarp. (d)Dacrymyces palmatus,
hymenium on upper, folded surface of basidiocarp.
(e)Ditiola haasii; note hyaline basidiocarps without
carotenoids, hymenia marked by light grayish and
slightly rough lower surfaces. (f)Dacrymyces chrysos-
permus, hymenium covering folded upper surface of
basidiocarp. (g) Dacryopinax spathularia, hymenia
on underside of bent basidiocarps.(h)Heterotextus
alpinus, conelike basidiocarps with hymenia on flat-
tened underside.(i)Guepiniopsis buccina, hymenia in
cups, geotropically positively oriented. (j) Dacryo-
naema rufum, young basidiocarps on exposed, hard
coniferous wood together with crustose lichens.(k)
Calocera corneawith mostly unforked clavarioid basi-
diocarps on hardwood.(l)Calocera viscosa, coralloid
basidiocarp with long root inserted in coniferous wood.
Bars¼5 mm. All figure originals F. OberwinklerDacrymycetes 359