Citrus wintersii

Citrus wintersii, the Brown River finger lime, is a shrub native to the Brown River region in Papua-New Guinea.^[1] It was previously known as Microcitrus papuana.^[2][3] It has, as the "finger" name suggests, a small, thin fruit, pointed at both ends.^[4] It grows near Port Moresby.^[4]

Brown River finger lime
Scientific classification
Kingdom:	Plantae
Clade:	Tracheophytes
Clade:	Angiosperms
Clade:	Eudicots
Clade:	Rosids
Order:	Sapindales
Family:	Rutaceae
Genus:	Citrus
Species:	C. wintersii
Binomial name
Citrus wintersii Mabb.
Synonyms
Microcitrus papuana Winters 1976, not Citrus papuana F.M.Bailey 1901.

It is reportedly rarely more than 150 cm (4.9 ft) tall in the wild though specimens cultivated from seed in California have attained heights of over 300 cm (9.8 ft). Leaves are narrowly lanceolate, up to 30 mm (1.2 in) long. Fruit is green, never yellow.^[5][6]