Alternaria arborescens

Species:	Alternaria arborescens Simmons
Original Reference:	Simmons, E. G. 1999. Alternaria themes and variations (236-243). Mycotaxon 70:356-369.
Additional Reference:	Grogan, R. G., K. A. Kimble, and I. Misaghi. 1975. A stem canker disease of tomato caused by Alternaria alternata f.sp. lycopersici. Phytopathology 65: 880-886.
Conidia:	(on PCA) mature conidia typically 12-42 x 7-11 µm, non-beaked, ellipsoid or short-ovoid, greatly punctulate to verrucose ornamentation, light tan or brown in coloration, 1-4 transepta, few longisepta or oblique septa, conidia come in a branching aggregate with 50-125 conidia.
Conidiophore:	(on PCA) 200-1000 x 3-4 µm, well defined with terminal and sub-terminal branching, secondary conidiophores typically 3-30 x 3 µm, simple but or typically geniculated with 1-3 loci.
Disease:	Stem Canker of Tomato
Host:	Lycopersicon esculentum Mill. [Cherry tomato]
Synonym:	A. alternata f. sp. lycopersici

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