Josefia intricata Scherber., Wongso & K.Hase

• Genus: Josefia
• Botanical Background: Described in Aroideana by Scherberich et al. (2023). Genus honors renowned aroid botanist Josef Bogner; species epithet “intricata” refers to leaf venation complexity

• Geographical Range: Known only from Lamandau Regency, Central Kalimantan (Indonesia)
• Environment: Rheophytic herb on andesite/basalt outcrops along stream edges in perhumid lowland rainforest (~130 m asl)

Leaves

• Narrowly lanceolate, coriaceous, dark glossy green above; striking raised adaxial venation network

Inflorescence (Spadix & Spathe)

• Solitary, nodding spathe white above lime-green base; spadix ~1.6 cm long, pollen extruded in strands; unique paired‑stamen staminate florets

Growth Habit

• Small (≤20 cm tall) clumping rheophyte with erect stems arising from a creeping rhizome

Light Requirements

• Bright, indirect light
• Avoid direct sun

Watering & Humidity

• Keep substrate evenly moist
• Maintain ≥80% humidity

Soil & Potting Mix

• Well‑draining, rich organic aroid mix

Temperature & Fertilizer

• 20–30 °C; monthly balanced feeding during active growth

Division

• Rhizome division is most reliable

Seeds

• Fruit produces tiny seeds
• Germination rarely attempted in cultivation

Typical Issues

• Susceptible to mealybugs, scale, spider mites
• Inspect regularly

Treatment Recommendations

• Manual removal of scale
• Neem oil or insecticidal soap for infestations

• Only species in its genus
• Splash‑cup seed dispersal
• Named for Josef Bogner

• Highly prized by collectors for its rare, intricate foliage and compact form

Wild Population Status

• Known only from a single locality
• Formal conservation assessment pending

Market Availability

• Rare 
• Occasionally offered by specialty tropical plant nurseries