Citrus australasica. Microcitrus australasica  Finger lime Family: Rutaceae      
Australia has six species of native citrus, with the most well known and cultivated species being the finger lime.
Demand for finger limes has grown steadily over the past decade, mainly as a result of its bush food status, unique caviar-like pulp and attractive color range, with most interest coming from the restaurant trade.
PART USED: Fruit
PREPARATIONS
Fluid extract 1:1 35% alcohol.[1]
          

HABITAT: In its natural habitat the finger lime grows as an understorey shrub or tree on a range of soil types.
ORIGIN: Rainforests of the border ranges of SE Queensland and Northern NSW.
DESCRIPTION: Citrus australasica is a large shrub to small tree up to 6 m tall, with spines up to 25 mm long. The leaves have many aromatic oil glands. Flowers are commonly white, but can also be pale pink. The elongated cylindrical fruits may be green, yellow, black, brown or purple producing flesh that is green, yellow or pink. The fruit has a high commercial value because of its distinctive caviar appearance and tangy taste, making it a desirable species of Citrus to grow.
ORIGIN: Australia
References
Inner Path can not take any responsibility for any adverse effects from the use of plants. Always seek advice from a professional before using a plant medicinally.
Research

Comparative analysis of three Australian finger lime (Citrus australasica) cultivars: identification of unique citrus chemotypes and new volatile molecules.
Delort E, Jaquier A, Decorzant E, Chapuis C, Casilli A, Frérot E.
Abstract
The volatile constituents of the peel of three cultivars of Australian finger lime (Citrus australasica) were investigated: Alstonville, Judy's Everbearing and Durham's Emerald. Both qualitative and quantitative GC-MS analyses were performed on their peel solvent extract. The results showed that the unique phenotypes of finger lime are also correlated to unique molecular compositions. Each cultivar revealed a different chemotype: limonene/sabinene for cv. Alstonville, limonene/citronellal/isomenthone for cv. Judy's Everbearing, and limonene/citronellal/ citronellol for cv. Durham's Emerald. To the best of our knowledge, these chemotypes have never been reported in any other citrus species. Furthermore, the amounts of some volatile constituents (?-terpinene, a-pinene, ß-pinene, citral), which are generally the major constituents besides limonene in lime species, were surprisingly low in the three cultivars. Comparative GC-MS analysis also showed that some volatile molecules tended to be specific to one cultivar and could therefore be considered as markers. Moreover six molecules were reported for the first time in a citrus extract and confirmed by synthesis. Heart-cutting enantioselective two-dimensional GC-MS was performed to determine the enantiomeric distribution of the major chiral constituents. The combined data on three finger lime cultivars gives evidence of their divergence from other citrus species.
PMID: 25468539 DOI: 10.1016/j.phytochem.2014.10.023 Phytochemistry. 2015 Jan;109:111-24. doi: 10.1016/j.phytochem.2014.10.023. Epub 2014 Nov 11. ncbi.nlm.nih.gov