Typhonium lineare Hett. & V.D.Nguyen

• Genus: Typhonium
• Botanical Background: Described by a team including Aroid specialist Dr. Peter C. Boyce and botanists Hett. & V.D. Nguyen, contributing to ongoing taxonomic work in Southeast Asia.

• Geographical Range: Endemic to parts of Vietnam, especially in lowland or foothill forest ecosystems.
• Environment: Prefers well-drained soils rich in organic matter; found in tropical monsoon climates with seasonal moisture.

Leaves

• Narrow, linear to lanceolate in shape
• Medium green, with a smooth surface and pointed tips
• Usually produced on short, erect petioles near the ground

Inflorescence (Spadix & Spathe)

• Small and close to the ground, often partially hidden
• Pale spathe with a slightly darker spadix
• Likely pollinated by flies, typical of the genus

Growth Habit

• Terrestrial and tuberous
• Grows from underground tubers that remain dormant in the dry season

Light Requirements

• Bright, indirect light
• Can tolerate partial to full shade
  
• Avoid direct afternoon sun to prevent leaf scorch

Watering & Humidity

• Water regularly during active growth; reduce when dormant
• Needs high humidity to mimic natural environment

Soil & Potting Mix

• A well-draining mix (leaf mold, perlite, and peat)
• Plant tubers shallowly in small containers

Temperature & Fertilizer

• Best grown in temperatures between 20–30°C (68–86°F)
• Balanced diluted fertilizer during active growth

Division

• Best propagated by dividing mature tubers
• Ensure each division has viable growing points
  

Stem Cuttings (if applicable)

• Not a typical propagation method due to its tuberous nature

Seeds

• Seeds are seldom available and slow to germinate
• Require warm, humid conditions for germination
  

Typical Issues

• Spider mites and fungus gnats in moist conditions
• Root and tuber rot may occur from overwatering

Treatment Recommendations

• Use neem oil or insecticidal soap for pests
• Remove infected tubers and improve drainage for rot

• Like many Typhonium species, may emit faint odors to attract pollinators
• Dormancy cycle aligns with tropical dry seasons

• Appreciated for its compact size and exotic form
• Suitable for collectors of unusual or tuberous Aroids
• Less showy than other ornamentals but botanically intriguing
  

Wild Population Status

• Not formally assessed for the IUCN Red List
• Potentially vulnerable due to habitat disruption in Vietnam
  

Market Availability

• Rare in cultivation, mainly found in specialty collections
• Not commonly available in commercial nurseries