Dossinia marmorata

A jewel orchid unique to Borneo

Dossinia marmorata is found only on Borneo and was published by Charles Morren in 1848. It is the sole accepted species in the genus Dossinia. This terrestrial jewel orchid is known for velvety leaves crossed by metallic-looking veins.

Wild plants grow on the humid floor of wet tropical forest, among leaf litter, moss and loose organic material beneath a dense canopy. Light reaches the ground in subdued, broken patches, and the air remains moisture-rich. Fallen leaves decompose slowly around the plants. The richly patterned foliage belongs to this sheltered Bornean forest floor.

Care for jewel orchids and their velvet foliage

Light

Set Dossinia marmorata near a north- or east-facing window where it receives strong diffuse daylight without sun striking the velvet leaves. A grow light positioned above the rosette can provide even light at moderate intensity.

Humidity and airflow

Moderate to high humidity improves leaf expansion and prevents edge drying. Water droplets remain in the fine velvet and can spot the blade, so direct water to the medium and allow accidental splashes to dry promptly.

Watering

Keep the fine medium evenly lightly moist during active growth, watering when the surface has just begun to dry. The delicate roots and creeping rhizome tolerate neither complete dryness nor permanent saturation.

Temperature

Maintain steady warmth with nights ideally away from chilling temperatures. Do not place the velvet foliage against cold glass or in an exterior-door draught.

Fertilising

Feed at a very low dose according to the product label during clear leaf and root growth. Warm plants under grow lights may continue to need light nutrition through winter; pause if the rhizome stops extending and water use falls.

Repotting

Repot when the shallow rhizome reaches the pot edge, the centre becomes crowded, moss decomposes or drainage slows. Retain sound fine roots, remove sour loose medium and lay the rhizome at the surface.

Velvet leaves in a terrarium: warning signs

• Golden veins flash or dim as the viewing angle changes: The iridescent network on Dossinia marmorata naturally shifts with light and angle. A dull leaf is not automatically unhealthy if its colour, texture and new growth remain normal.
• Leaf margins curl and become crisp: Dry roots, excess heat or warm moving air are all possible causes. Keep the root zone lightly and evenly moist in a warm enclosed setup, but do not solve dry edges by saturating the pot.
• A leaf base turns translucent or black: Soft spreading tissue suggests rot in stagnant, over-wet conditions. Isolate the plant, remove the affected leaf with sterile tools and improve drainage plus gentle air exchange inside the terrarium.
• Round spots enlarge across the velvet surface: Water sitting on the foliage with little airflow can encourage leaf-spot disease. Apply water directly to the potting mix, remove badly affected tissue and disinfect tools between cuts.
• Cottony pests hide in the crown: Mealybugs can settle between the tightly held leaf stalks. Inspect with a bright light and treat carefully without leaving liquid pooled in the crown; our terrarium guide covers the balance between moisture and airflow.

Keep Dossinia marmorata away from children and pets

• Keep this plant away from children, cats and dogs.
• Its effects after chewing or swallowing are unclear, and plant material can still cause an upset stomach.
• Contact a veterinarian or medical professional if symptoms develop or do not settle.

Dossinia marmorata: where the name comes from

Dossinia honours the Belgian botanist Pierre Étienne Dossin. The epithet marmorata is Latin for marbled, referring to the patterned leaves.

Charles François Antoine Morren established the genus Dossinia in 1848 in Annales de la Société Royale d’Agriculture et de Botanique de Gand, volume 4, page 171.

Charles François Antoine Morren first described Dossinia marmorata in 1848 in Annales de la Société Royale d’Agriculture et de Botanique de Gand, volume 4, page 171.