Exacum L.

Latin ex — out, agere — to drive, referring to the purgative properties of some species.

Herbs. Leaves opposite, simple, entire, stalkless except in e. affine. Flowers blue or white, solitary or in forked clusters. Calyx and corolla 4-5-lobed, the petal lobes spreading. Stamens short, enclosed. Fruit a 2-valved capsule.

Grown for the simple, attractive flowers.


Leaves stalked in the cultivated species.

69 species from the Old World tropics.

Klackenberg (1985).

Source: Spencer, R. (2002). Gentianaceae. In: Spencer, R.. Horticultural Flora of South-eastern Australia. Volume 4. Flowering plants. Dicotyledons. Part 3. The identification of garden and cultivated plants. University of New South Wales Press.

Hero image
kingdom Plantae
phylum   Tracheophyta
class    Magnoliopsida
superorder     Asteranae
order      Gentianales
family       Gentianaceae
Higher taxa
Subordinate taxa
species         Exacum affine Balf.f.