Friday, January 18, 2013

Stemphylium spp.



The leaf decay fungi, Stemphylium spp. grows well on PDA and MEA.  It can be recognized on an Air-O-Cell cassette air sample if there is a mature spore.   The mature Stemphylium spp. spore has a transverse septation that divides the top and the bottom of the spore similar to the waist on a human.  Immature spores can be confused with Ulocladium spp.

The organism grows on decaying leaves and has a preference for tomato plants. Pleospora spp. is the teleomorph (sexual stage) of this organism.


Line drawing of Stemphylium spp. N. Carlson
Stemphylium spp. with acid fuschin stain 400x N. Carlson

Stemphylium spp. with 85% lactic acid stain 400x - N. Carlson

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