Biology Reference
In-Depth Information
Losses in food crops due to rust have been
enormous since the beginning of history. The
Romans had a festival to propitiate the rust
gods. Now we try to do it by removing the alter-
nate host, barberry to save wheat, black currants
to save white pine; or by developing more and
more resistant varieties for the ever increasing
rust strains; or by the use of fungicides, classi-
cally sulfur, latterly some of the carbamates, and,
in a few cases, antibiotics.
Baeodromus
Pucciniaceae. Spores one-celled; telia pulvinate,
erumpent; short chains of spores.
Baeodromus californicus On senecio, III.
Baeodromus eupatorii (see
Coleosporium
▶
steviae
). On eupatorium.
Coleosporium steviae (formerly
Baeodromus
eupatorii
). On eupatorium.
Achrotelium
Bubakia (Phakopsora)
Melampsoraceae. Telia on underside of leaves;
spores one-celled at first, four-celled on germina-
tion, stalked.
Achrotelium lucumae II, III on lucuma and egg
fruit, Florida.
Melampsoraceae. Telia indehiscent, lenticular,
spores formed in irregular succession, one-celled.
Uredia without peridium or paraphyses.
Bubakia erythroxylonis On erythroxylon.
Caeoma
Aecidium
Form genus. Aecia with catenulate spores but no
peridium.
Caeoma faulliana (see
This is a form genus, a name applied to the aecial
stage where the full cycle is unknown and 0 and
I are the only spores. Aecia have a peridium and
catenulate spores. There are many species.
Aecidium avocense On poppy-mallow, proba-
bly aecial stage of
Puccinia avocensis
.
Aecidium conspersum On
Melampsora medu-
sae
).
Needle Rust
on alpine fir. Aecia orange-
yellow, on needles of current year.
Caeoma torreyae On torreya, California.
Melampsora medusae (formerly
Caeoma
faulliana
).
Needle Rust
on alpine fir. Aecia
orange-yellow, on needles of current year.
▶
houstonia
and
galium, Wisconsin.
Aecidium rubromaculans On
viburnum,
Florida.
Cerotelium
Angiospora
Pucciniaceae. Spores one-celled; teliospores in
a many-layered mass; hyaline, not exserted
through stomata; aecia with peridium; uredia
with paraphyses; spores borne singly.
Cerotelium dicentrae 0, I on bleeding heart; II,
III on
Urticastrum
.
Cerotelium fici (
Physopella fici
).
Fig Rust
, II,
III on common fig, Florida strangler fig and
osage-orange, Alabama, Florida, Louisiana, Min-
nesota, South Carolina, Texas.
Physopella
.
▶
Aplopsora
Melampsoraceae. Teliospores sessile, hyaline,
one-celled, in a single layer; aecia unknown.
Aplopsora nyssae On tupelo, II, III.
