Josefia Intricata

Quick facts

Identity

Also known as

Aridarum Perisai

Synonyms

Aridarum sp. 'Perisai'

Environment

Freshwater

Native to

Indonesia (Kalimantan, Borneo)

Habitat

Grows on bare rock along riverbanks and streams in Bornean rainforest, mostly emersed and exposed to high humidity, briefly submerged only during seasonal floods

Sourcing

Wild-caught

Conservation

Not Evaluated

Care

Care level

Difficult

Growth form

Rhizome

Max height

4 – 9 in (10 – 23 cm)

Spread

6 in (15 cm)

Growth rate

Slow

Placement

Epiphyte

Water

Temperature

72 – 82 °F (22 – 28 °C)

Light

Medium

Planting

Substrate

Any

Feeds from

Roots

Fertilizer needs

Low

Colors

Green

Feeding & breeding

Propagation

Rhizome division

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Care guide

Overview

Clings to bare rock rather than spreading through substrate, sending out a creeping rhizome studded with narrow, leathery, pendant leaves whose intricate venation echoes miniature Anthurium foliage. Wild-collected from Bornean riverbanks, it demands humidity above 80 percent and moderate light, and belongs in a paludarium or terrarium rather than submerged in an aquarium.

Care

Josefia intricata is a rare Bornean aroid best kept as a terrarium, paludarium, or houseplant subject rather than an aquarium plant, despite occasionally being sold alongside aquatic species. It grows on bare rock along riverbanks in its native habitat and needs consistently high humidity, ideally above 80 percent, along with moderate, indirect light. The creeping rhizome should sit on or just above a damp substrate or rock surface, with roots kept moist but never waterlogged for extended periods.

Planting & trimming

Remove any packing cotton from the roots before mounting the rhizome on damp rock, wood, or a well-draining substrate mix, keeping the rhizome itself uncovered. It does best wedged into crevices or attached with thread or glue to hardscape in a humid paludarium or terrarium, similar to how Anubias or ferns are mounted. Avoid burying the rhizome directly in soggy substrate, as this invites rot.

Fertilizing

Dilute liquid fertilizer applied occasionally to the substrate or misting water supports steady growth, since this is a slow-growing epiphytic aroid with modest nutrient demand. Overfeeding is more likely to cause algae or rot on the leathery leaves than to benefit the plant. A well-draining, nutrient-poor to moderately rich substrate mimicking rock crevices with leaf litter works well.

Propagation

Propagation is done by dividing sections of the creeping rhizome, each with at least one growth point and a few roots, then remounting the divisions on damp rock or wood. Growth is slow, so divisions should be handled carefully and given time to establish before further disturbance.

Problems

Prolonged full submersion causes decline and eventual rot, since this species is adapted to only brief seasonal flooding rather than permanent aquatic life. Low humidity leads to browning or curling leaf margins, while stagnant, overly wet substrate promotes rhizome rot. Moderate airflow around the foliage helps prevent fungal issues in enclosed terrariums.

Sources

1. Josefia - Wikipedia
2. Josefia Intricata - Buce Plant
3. Josefia intricata (Aridarum sp. 'Perisai') - Jungle Leaves

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