Region: east Asia, southern China, Indonesia, Laos, Malaysia, Singapore, Thailand, Vietnam.
Habitat: forests; on trees or over rocks; elevations below 500 metres.
Content: calcium oxalate crystals.
Use: leaves for flavouring rice; leaves in curries, when cooked or fully dried.
BotanyHerb; perennial; epiphytic, creeping against trees or over boulders by mean of adhesive roots.
Roots: adhesive.
Stem: 4 - 5 mm in diameter; with elongated internodes about 25 mm long, that root to secure the plant.