Psidium sartorianum is a species of tree in the family Myrtaceae.

It is native to North and South America.

[1] In much of Mexico it is called guayabillo; the Maya call it niedenzu and pichi' che' .

In English it is called little guava.

P. sartorianum is described as producing fruits up to an inch in diameter (2.5 cm) -- much smaller than the cultivated guava (Psidium guajava) -- but tasting something like regular guava fruits.