Kingdom: Fungi
Phylum:: Ascomycota
Subphylum: Pezizomycotina
Class: Dothideomycetes
Subclass: Dothideomycetidae
Order: Capnodiales
Family: Mycosphaerellaceae
Genus: Mycosphaerella
Species: M. pittospori
Binomial name: Mycosphaerella pittospori
Synonym: Sphaerella pittospori
Common name: Lemonwood leaf spot.
Mycosphaerella pittospori is a fungus forming wine red coloured spots on the leaves of Pittosporum eugenioides (lemonwood/tarata). It has been reported from Southland, Taranaki, Coromandel and Northland. It usually affects the lower leaves.
The top surface of the leaves.
The underside of the same leaves.
The next two photos are of the same spot on different sides of the same leaf.
Thanks to Wikipedia for text and information: https://creativecommons.org/licenses/by-sa/3.0/