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Cryptostylis leptochila

small tongue-orchid

Orchidaceae Eastern Australia

Attracts Pollinators

SunPart Shade – Full Shade

WaterMedium

HardinessZones 8–10

Overview

Cryptostylis leptochila is an evergreen terrestrial orchid forming a small cluster of upright leaves and a flowering spike 12-24 inches (30-60 cm) tall. The leaves are lance-shaped, 2-5 inches (5-13 cm) long, dark green above and often purplish beneath, held erect on slender stalks. Each spike carries 2-12 flowers that open in succession. The flowers are dominated by a narrow, erect labellum (the tongue) 0.8-1.2 inches (20-30 mm) long, dark reddish-brown with darker markings, while the remaining floral parts are small, greenish, and curve backward. Flowering occurs mainly in summer. The flowers are pollinated by male orchid-dupe wasps (Lissopimpla excelsa), which attempt to mate with the labellum and transfer pollen in the process; no nectar reward is produced. The plant grows from fleshy roots and spreads slowly to form small groups. Like most terrestrial orchids it depends on specific soil fungi (mycorrhiza), which makes transplanting and cultivation difficult. Dry conditions and soil disturbance reduce flowering and can cause plants to stay dormant below ground for a season.

Native Range

Native to eastern Australia, from Queensland through New South Wales to Victoria and Tasmania. Grows in open forest and woodland in well-drained sandy and loamy soils, often among leaf litter in dappled shade.

Suggested Uses

Grown only in specialised native orchid collections and undisturbed bushland settings rather than general garden beds. Retained in conservation and revegetation areas for its role in native ecosystems. Not suited to containers because of its fungal soil requirement.

How to Identify

Identified by erect lance-shaped leaves 2-5 inches (5-13 cm) long that are purplish beneath, and by flowers with a narrow, erect reddish-brown labellum 0.8-1.2 inches (20-30 mm) long. The narrower, darker, more pointed labellum separates it from Cryptostylis subulata. The non-resupinate flower, with the labellum held uppermost, is characteristic of the genus.

Appearance

Size & Dimensions

Height1' - 2'

Width/Spread6" - 1'

Reaches mature size in approximately 4 years

Colors

Flower Colors

red

Foliage Colors

Fall Foliage Colors

Bloom Information

Bloom Period

~5 weeks

Summer

Flowers mainly in summer (December to February in the Southern Hemisphere), with some plants flowering into early autumn. Flowers open in succession over 4-6 weeks on each spike. Flowering is sparse in dry seasons, and some plants stay dormant in poor years.

Detailed Descriptions

Flower Description

Reddish-brown labellum with greenish segments

Foliage Description

Dark green, purplish beneath

Growing Conditions

Sun Requirements

SunPartial Shade SunFull Shade

Requires 2-4 hours of direct sunlight daily

• Full Sun: 6+ hours of direct sunlight

• Partial Shade: 3-6 hours of direct sunlight

• Full Shade: Less than 3 hours of direct sunlight

Soil Requirements

pH Range5.0 - 6.5(Acidic)

357912

Soil Types

sand loam

Drainagewell drained

Water & Climate

Water Needs

Medium

Frost Tolerance

hardy

Time to Maturity

3-5 years from seed to flowering

Care & Maintenance

Care Guide

Cryptostylis leptochila grows in dappled to part shade in well-drained sandy or loam soils rich in leaf litter. It depends on specific mycorrhizal fungi, so it rarely survives transplanting and is seldom cultivated. In habitat, steady light moisture during the growing season supports flowering, while soil disturbance and drying reduce it. Plants tolerate light frost where protected by tree cover. Leaf litter from local trees maintains the soil conditions the roots require. Slugs and snails graze the soft flower spikes.

Pruning

No pruning is applied. Spent flower spikes are left to set seed or removed at the base once dry. Surrounding leaf litter is retained rather than cleared, as it sustains the soil fungi the plant depends on.