Biology Reference
In-Depth Information
cylindrical with an awl-shaped appendage at the
tip; parasitic or saprophytic.
Kellermania anomala ( K. yuccaegena .) Yucca
Leaf Blight , general on nonarborescent forms of
yucca; in Florida and California on arborescent
forms.
Kellermania sisyrinchii (see
Control Sanitation is very important; cut out and
burn all diseased canes. A control program for
spur blight should suffice for cane blight.
Leptosphaeria
(Melanomma)
conithyrium
(Coniothyrium fuckelii) (see
Diapleella
coniothyrium ) Raspberry Cane Blight , general
on raspberry, dewberry, blackberry.
Leptosphaeria korrae Blight on turfgrass
(associated with Fusarium blight syndrome); dis-
ease is also called spring dead spot.
Leptosphaeria thomasiana Cane Blight of
dewberry, raspberry, in Pacific Northwest.
Leptosphaeria sp. Blight; of Miscanthus.
Scolecosporiella
sisyrinchii .) Leaf Blight of blue-eyed grass.
Scolecosporiella sisyrinchii (formerly
Kellermannia sisyrinchii .) Leaf Blight of blue-
eyed grass.
Labrella
Deuteromycetes, Coelomycetes
Linospora
Pycnidia with a radiate shield, rounded; innate or
erumpent; spores hyaline, one-celled.
Labrella aspidistrae Leaf Blight of aspidistra.
Leaf Spots .
Linospora tetraspora Leaf Blight of poplar.
Leptosphaeria
Lophodermella
Ascomycetes, Dothideales
Ascomycetes, Rhytismatales
Perithecia membranous, not beaked, opening
with an ostiole; innate or finally erumpent;
paraphyses present; spores dark, with several
cells. Anamorph state a Coniothryium with
black, globose pycnidia and very small, dark,
one-celled conidia, extruded in a black cirrhus.
Diapleella coniothyrium (formerly
Leptosphaeria ( Melanomma ) conithyrium;
( Coniothyrium fuckelii )). Raspberry Cane Blight ,
general on raspberry, dewberry, blackberry. The
same fungus causes cankers of apple and rose
(
Hymenium on a fleshy-gelatinous stroma under
the bark of woody plants; ascospores aseptate.
Lophodermella sp. Needle Cast of pine.
Macrophomina
Rots .
Macrophomina phaseolina Ashy Stem Blight ,
Charcoal Rot of soybeans, sweet potatoes, many
other plants.
Rots .
Cankers and Diebacks ). On raspberry, brown
dead areas extend into wood; whole canes or
single branches wilt and die; often between
blossoming and fruiting. The fungus enters the
bark at any time during the season, through an
insect wound or mechanical injury. Smutty
patches on the bark come from small olive
conidia of the Coniothyrium stage and larger,
dark, four-celled ascospores. Ascospores are
spread by rain; conidia by rain and insects
Micropeltis
Ascomycetes, Dothideales
A single hymenium, fruiting layer, covered with
an open, reticulate scutellum; paraphyses pre-
sent; spores hyaline, with several cells.
Micropeltis viburni Leaf Blight of viburnum.
 
 
 
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