Urediniospore
Urediniospores (or uredospores) are thin-walled spores produced by the uredium, a stage in the life-cycle of rusts.
Urediniospores develop in the uredium, generally on a leaf's under surface.
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Urediniospores of 11
Milesina
species. a
Milesina blechni
on
Struthiopteris spicant
b
Milesina blechni
on
Struthiopteris spicant
, cracked
spore
with released plasma,
germ pores
scattered c
Milesina carpatica
on
Dryopteris filix-mas
d
Milesina exigua
on
Polystichum braunii
, smooth surface e
Milesina exigua
on
Polystichum braunii
, smooth surface, plasma-free spore, germ pores bipolar f
Milesina feurichii
on
Asplenium septentrionale
with smooth areas on surface g
Milesina feurichii
on
Asplenium septentrionale
, cracked plasma-free spore, germ pores scattered h
Milesina kriegeriana
on
Dryopteris carthusiana
i
Milesina magnusiana
on
Asplenium adiantum-nigrum
with smooth areas on surface j
Milesina magnusiana
on
Asplenium adiantum-nigrum
, spore plasma-free, germ pores scattered k
Milesina murariae
on
Asplenium ruta-muraria
with smooth areas on surface l
Milesina murariae
on
Asplenium ruta-muraria
, cracked spore with released plasma, germ pores scattered m
Milesina polypodii
on
Polypodium vulgare
with smooth areas on surface n
Milesina scolopendrii
on
Asplenium scolopendrium
with smooth areas on surface o
Milesina vogesiaca
on
Polystichum aculeatum
, surface with very flat warts at the tip of the spore (arrow) p
Milesina vogesiaca
on
Polystichum aculeatum
, surface smooth (no warts visible at the tip), germ pores bipolar q
Milesina whitei
on
Polystichum
sp. r
Milesina whitei
on
Polystichum setiferum
, cracked spore with released plasma, germ pores scattered.
