Biology Reference
In-Depth Information
Colletotrichum acutatum
Twig Blight
and
Fruit Spot
on dogwood
Colletotrichum
Ciboria
gloeosporioides
Seedling
Ascomycetes, Helotiales,
Sclerotiniaceae
Blight
of papaya.
Colletotrichum dematium
Twig Blight
on
vinca.
Stroma a dark brown to black sclerotium in cat-
kins or seed, simulating in shape the stromatized
organ and not resembling a sclerotium externally.
Apothecia cupulate to shallow saucer-shaped;
brown.
Ciboria acerina
Maple Inflorescence Blight
on
red and silver maple. Apothecia, developed in
great numbers from stromatized inflorescences
on ground beneath trees, start discharging spores
when maple flowers appear overhead. Mycelium
spreads through stamens, calyx, and bud scales
until flower cluster drops.
Ciboria carunculoides
Popcorn Disease
of
mulberry, a southern disease, not very important.
Sclerotia are formed in carpels of fruit, which
swells to resemble popcorn but remains green.
Corticium
Basidiomycetes, Aphyllophorales
Hymenium or fruiting surface of basidia
consisting of a single resupinate or horizontal
layer. This genus has contained a rather hetero-
geneous collection of species; some of the more
important have been transferred to the genus
Pellicularia
.
Corticium
koleroga
Thread
Blight
.
Pellicularia koleroga
.
Corticium
▶
microsclerotia
Web
Blight
.
Pellicularia filamentosa
.
Corticium salmonicolor (see
▶
Erythricium
salmonicolor
).
Limb Blight
of fig, pear, apple in
Gulf States.
Corticium
▶
Ciborinia
stevensii
Thread
Blight
.
Ascomycetes, Helotiales,
Sclerotiniaceae
Pellicularia koleroga
.
Corticium vagum, now
Pellicularia
filamentosa
, teleomorph state of
Rhizoctonia
solani
, causing black scurf of potatoes and
damping-off and root rot of many plants. See
both
▶
Stroma a thin, flat, black sclerotium of discoid
type in leaves; one to several stalked apothecia
arise from sclerotia; apothecia small, brown,
cupulate to flat when expanded.
Ciborinia erythronii and C. gracilis
Leaf
Blight
of erythronium. Flat black sclerotia are
prominent in leaves.
Rhizoctonia
under Rots.
Erythricium salmonicolor (formerly
Corticium salmonicolor
).
Limb Blight
of fig,
pear, apple in Gulf States. The spore surface is
pinkish.
Pellicularia
and
▶
▶
Cladosporium
Coryneum
Blackleg
.
Cladosporium
▶
Deuteromycetes, Coelomycetes
cladosporioides
Blossom
Blight
on strawberry.
Acervuli subcutaneous or subcortical, black,
cushion-shaped or disc-shaped; conidiophores
slender, simple; spores dark with several cross
walls, oblong to fusoid; parasitic or saprophytic
(see
Fig. 1
, chapter
Colletotrichum
Anthracnose
.
▶
▶
