Biology Reference
In-Depth Information
sesbania,
indigo, spiny amaranth, vetch and
Dermea (Dermatea)
soybean.
Diaporthe pruni
Twig Canker
on black cherry;
D. prunicola
on American plum.
Ascomycetes, Helotiales
Apothecia small, brownish to black with
a circular opening; innate at first, on a stromoid
base, rupturing host at maturity; spores one-
celled, hyaline, globose to oblong. Cup fungi
(ascocarpcup-shaped); excipulum of subglobose
cells; sclerotia absent.
Dermatea acerina (see
Dichotomophthora
Deuteromycetes, Hyphomycetes
Conidiophores brown, branching dichotomous to
subdichotomous, elongated, terminal branches
4-8 lobed each lobe bearing single conidium;
conidia dark, ovoid to elongate-ovoid, 1 to 6
celled.
Dichotomophthora portulacae
Stem Canker
and
Root Rot
on common purslane.
Dermea acerina
).
Bark Canker
of maple, occasional.
Dermatea balsamea (see
▶
Dermea balsamea
).
▶
Twig Canker
of hemlock.
Dermatea livida (see
Pezicula livida
).
Bark
▶
Canker
of redwood.
Dermea acerina (formerly
Dermatea acerina
).
Bark Canker
of maple, occasional.
Dermea
Pseudomassaria (Didymella)
Dermatea
balsamea (formerly
balsamea
).
Twig Canker
of hemlock.
Dermea pseudotsugae
Branch Canker
on fir.
Pezicola livida (formerly
Dermatea livida
).
Bark Canker
of redwood.
Blights
.
Didymella
▶
sepincoliformis (see
Pseudomassaria sepincolaeformis
).
Dieback
of rose.
Pseudomassaria
▶
sepincolaeformis
(formerly
Didymella sepincoliformis
).
Dieback
of rose.
Diaporthe
Blights
.
Cryphonectria cubensis (formerly
Diaporthe
cubensis
).
Canker
of
Eucalyptus
spp.
Diaporthe eres
Canker
,
Dieback
of English
holly in the Northwest. The fungus name is
a species complex that may include a
Diaporthe
on rose petals and one causing a peach constric-
tion disease.
Diaporthe
▶
Diplodia
Diplodia sp.
Rose Dieback
, sometimes after
drought and other contributing factors. In Texas
the disease is most evident in autumn, progressing
on roses in storage or overwintering in the ground.
Canes die from tip downward, often starting in the
flower stem. Diseased wood turns brown or black,
and is somewhat shriveled. Pycnidia are produced
in dead canes. Improve general rose vigor; use
fungicides as for blackspot. May also cause
canker of Russian olive.
Diplodia camphorae
Canker
,
Dieback
of cam-
phor-tree.
Diplodia
Cryphonectria
cubensis
).
Canker
of
Eucalyptus
spp.
Diaporthe eres
Canker
,
Dieback
of English
holly in the Northwest.
Diaporthe helianthi
Canker
of sunflower; also
leaf spot of sunflower.
Diaporthe oncostoma
Canker
,
Dieback
of
black locust.
Diaporthe phaseolorum var. caulivora
Canker
of painted spurge, prickly sida, redweed, morn-
ing-glory, black nightshade, jacquemontia, hemp
cubensis
(see
▶
Sphaeropsis
hyalina
).
Ash Canker
and
Dieback
, northeastern
states.
infuscans
(see
▶
