Overview
The Pink Bunny Orchid (Eriochilus scaber) is a charming miniature terrestrial orchid that blankets damp sandy flats and open woodlands throughout south-western Australia in early spring. Renowned for its twin, outstretched lateral sepals that resemble the upright, attentive ears of a rabbit, this petite flower produces sweet drifts of color following winter rains.
Biology and Physical Characteristics
Eriochilus scaber develops a single heart-shaped or ovate basal leaf that is conspicuously hairy on the upper surface, often showing a purplish reverse. The slender, wiry flowering stem is covered in fine bristly hairs and holds one to three miniature blossoms. The most prominent feature of the flower is its pair of broad, spreading lateral sepals, which are bright rose-pink to pale shell-pink or white. The small, recurved labellum is densely covered with red-purple glandular calli and tufts of fine white hairs.
Behavior and Ecology
Flowering predominantly between July and October, Eriochilus scaber is an important early spring nectar and pollen source for small native bees and hoverflies. The orchid thrives in habitats that experience seasonal waterlogging during the austral winter and spring, followed by rapid drying in the Mediterranean summer. By relying on an underground tuber that rests dormant throughout summer droughts, the plant conserves resources and avoids extreme thermal stress.
Conservation and Human Impact
Eriochilus scaber is evaluated as Least Concern, maintaining healthy, secure populations in numerous national parks and conservation reserves across south-western Australia. The species readily colonizes old firebreaks and mossy tracks, though it is vulnerable to prolonged drought conditions, heavy soil compaction from recreational vehicles, and dense invasion by exotic pasture grasses.
Interesting Factoid
The endearing common name ‘Pink Bunny Orchid’ derives from the two prominent lateral sepals that flare upright and outward, perfectly mimicking the perked ears of a miniature rabbit.
Last updated: October 2026