Biology Reference
In-Depth Information
Exosporium palmivorum (see
Stigmina
palmivorum
).
Leaf Spot
of palms, in greenhouses
and in the South.
Stigmina liquidambaris (formerly
Exosporium
liquidambaris
).
Leaf Spot
on sweet gum.
Stigmina palmivorum (formerly
Exosporium
palmivorum
).
Leaf Spot
of palms, in greenhouses
and in the South. Small, round, yellowish trans-
parent spots run together to form large, irregular,
gray-brown blotches; leaves may die. The disease
is more serious with insufficient light. Spores are
long, club-shaped, brown, with many cells.
Remove and burn infected leaves. Spray with
bordeaux mixture.
Stigmella platani-racemosae
▶
Stigmatea (Stigmea)
Ascomycetes, Dothideales
Fruiting structure subcuticular, hymenium
a single disclike layer covered with a scutellum;
spores dark, two-celled; mycelium scanty.
Hormotheca rubicola (formerly Stigmea
rubicola).
Black Spot
of raspberry. Spot
formed in late summer with a membranous
layer under the cuticle; fruiting bodies produced
in spring.
Stigmea geranii
Black Leaf Speck
of Geranium
(cranesbill).
Stigmea rubicola (see
Stigmina
platani-racemosae
).
Leaf Spot
of California
Sycamore,
(see
▶
Hormotheca rubicola
).
▶
Black Spot
of raspberry.
sometimes
causing
premature
defoliation.
Stigmina platani-racemosae (formerly
Stigmella platani-racemosae
).
Leaf Spot
of
California Sycamore, sometimes causing prema-
ture defoliation.
Stigmina (Stigmella)
Deuteromycetes, Hyphomycetes
Conidiophores short, dark, with a single terminal
spore; conidia dark, muriform but with few cells,
ovoid to oblong to nearly spherical; parasitic on
leaves.
Exosporium liquidambaris
Ulocladium
Stigmina
liquidambaris
).
Leaf Spot
on sweet gum.
(see
Ulocladium
cucurbitae
Leaf
Spot
on
▶
cucumber.
