Biology Reference
In-Depth Information
Cylindrocladium pauciramosum
Root and
Crown Rot
on heath.
Cylindrocladium parasiticum
Black Rot
of
hoary-tick clover and on peanut.
Cylindrocladium pteridis
Postharvest Decay
on leatherleaf fern.
Cylindrocladium scorparium
Root Rot
on
pine, sweet gum and tulip-tree.
sometimes on living trees, especially willows,
near wounds. Annual leathery to rigid conks
(sporophores) are shelf-shaped, up to 6 inches
wide, and may occasionally encircle a
small, dead stem. The upper surface is gray to
brown, smooth, concentrically zoned. Mouths of
tubes on undersurface are elongated, wavy in
outline.
Daedalea
Daldinia
Basidiomycetes, Aphyllophorales
Ascomycetes, Xylariaceae
Pileus dimidiate to caplike and stipitate; pores
waved, mazelike or somewhat resembling gills;
without cystidia; hymenium labyrinthine.
Cerrena unicolor (formerly
Daedalea
unicolor
).
Heart Rot
,
Canker
of maples and
other living hardwoods, including alder, ailan-
thus, amelanchier, birch, chestnut and hackberry.
Decayed wood is yellow at first, later white and
soft. Conks are small, corky, often occuring in
clusters, varying from brown to gray.
Daedalea
Perithecia in a globoid to pulvinate, concentri-
cally zoned stroma, carbonaceous to leathery,
3 to 5 cm across; spores one-celled; dark.
Daldinia concentrica
Wood Rot
of ash, beech,
various hardwoods and occasionally citrus.
There is a superficial white rot on dead parts of
living trees. On English ash the decay is called
calico wood and is strikingly marked with irreg-
ular brown to black bands. Stroma containing
perithecia
are
hemispherical,
black,
Daedaleopsis
confragosa
).
White Mottled Wound Rot
of hard-
woods, also on fir.
Daedalea quercina
Brown Cubical Rot
of dead
timber;
Heart Rot
of living trees in immediate
vicinity of butt wounds, usually on oak, chestnut,
sometimes on maple, birch and hickory. In
advanced stages the wood is reduced to
a yellow-brown friable mass, with a tendency to
break into small cubes. Conks are corky and
shelf-shaped, up to 7 inches wide, grayish to
almost black with smooth upper surface and
cream to brownish under-surface. Mouths are
large, elongated, irregular. The conks are more
or less perennial.
Daedalea unicolor (see
confragosa (see
carbonaceous.
▶
Diaporthe
Blights
.
Diaporthe phaseolorum
Sweet Potato Dry
Rot
. If diseased potatoes are planted, the sprouts
are affected, but the disease shows little in the
field. The roots, infected at the stem end, continue
to rot in storage. They are shrunken, often mum-
mified, covered with papillae, which are pycnidia
under the skin massed in a coal-black stroma.
Optimum temperature for the fungus is 75
to
90
F. Use cool storage.
Diaporthe citri
Phomopsis Stem End Rot
,
Melanose
, general on citrus; Stem Rot of
mango. The rot on fruits is a leathery, pliable,
buff to brown area at the button end. The
melanose is a superficial marking of fruits
with yellow or brown, scabby, waxy dots or
crusts, on leaves, twigs and fruit, often in
streaks. On lemon trees, especially variety
▶
Cerrena unicolor
).
Heart Rot
,
Canker
of maples and other living
hardwoods, including alder, ailanthus,
amelanchier, birch, chestnut and hackberry.
Daedaleopsis confragosa (formerly
Daedalea
confragosa
).
White Mottled Wound Rot
of hard-
woods, also on fir. This is a white soft rot, a slash
destroyer
▶
in eastern hardwood forests but
