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Lyperanthus suaveolens

brown beaks

Orchidaceae Southeastern Australia

Attracts Pollinators Fragrant (moderate)

SunFull Sun – Part Shade

WaterLow

HardinessZones 9–10

Overview

Lyperanthus suaveolens is a terrestrial orchid growing from an underground tuber, sending up a single erect flowering stem 8-16 inches (20-40 cm) tall. A solitary stiff, leathery, channelled leaf 4-8 inches (10-20 cm) long emerges from the base. The stem carries 2-9 flowers, each about 0.6-1 inch (15-25 mm) long, in reddish-brown to dark brown tones with a fringed white-and-red labellum, and the hooded column gives the flowers their beak-like look and common name. The flowers are sweetly scented, the feature behind the species name, and they blacken as they dry. It is native to southeastern Australia, where it grows in dry sclerophyll forest, heath, and woodland on sandy soils, often appearing in numbers after summer fire. Like most terrestrial orchids it relies on soil fungi to germinate and establish, which makes it difficult to transplant or cultivate. The plant is dormant through the dry months, persisting as a tuber below ground.

Native Range

Lyperanthus suaveolens is native to southeastern Australia, occurring in Queensland, New South Wales, Victoria, Tasmania, and South Australia. It grows in dry forest, heath, and woodland on sandy and well-drained soils.

Suggested Uses

Grown only in specialist terrestrial orchid collections and conservation plantings. It is not suited to general garden beds or containers because of its fungal dependency, fire-linked flowering, and summer dormancy.

How to Identify

Identify by the single stiff, leathery, channelled leaf and an erect stem 8-16 inches (20-40 cm) tall carrying 2-9 reddish-brown to dark brown flowers with a fringed white labellum and a hooded, beak-like column. The flowers are sweetly scented and turn black as they dry, a feature uncommon among local orchids. Flowering often follows summer bushfire.

Appearance

Size & Dimensions

Height8" - 1'4"

Width/Spread4" - 8"

Colors

Flower Colors

Foliage Colors

Fall Foliage Colors

Bloom Information

Bloom Period

~3 weeks

Spring

Flowering occurs in spring, mainly September to November in its native range. The sweetly scented brown flowers open along the upper stem over 2-4 weeks. Flowering is often heavier in the season after a summer fire and sparse in unburnt sites.

Detailed Descriptions

Flower Description

reddish-brown to dark brown

Foliage Description

green

Growing Conditions

Sun Requirements

SunFull Sun SunPartial Shade

Requires 4-8 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

Drainagewell drained

Water & Climate

Water Needs

Low

Frost Tolerance

hardy

Time to Maturity

3-5 years from seed

Care & Maintenance

Care Guide

Lyperanthus suaveolens grows from a tuber in well-drained sandy soil in full sun to light shade, in open forest and heath. It depends on a mycorrhizal fungal partner to germinate and establish, which makes it very difficult to grow outside its natural habitat. The plant needs moisture through its winter and spring growth, followed by a dry summer dormancy as a tuber. Waterlogging during dormancy rots the tuber. It is rarely cultivated and is most often seen in situ in protected bushland. Propagation depends on symbiotic seed sowing with the correct fungus.

Pruning

No pruning is required. The single leaf and flowering stem die back to the underground tuber after seed set, and the plant stays dormant until the next autumn. Spent stems can be left to disperse seed.