Anthurium exstipulatum Sodiro

• Genus: Anthurium
• Botanical Background: 

  Described by Ecuadorian botanist Luis Sodiro in the late 19th century, Anthurium exstipulatum is named for its lack of stipules (small leaf-like structures at the base of the leaf petiole), a distinctive characteristic of this species.

• Geographical Range: Native to the high-altitude cloud forests of Ecuador
• Environment: Thrives in high humidity typical of cloud forest environments, Prefers rich, organic, well-draining soils. Tolerates cool to moderate temperatures, typically ranging from 18°C to 25°C (64°F to 77°F).

Leaves

• Large, elongated leaves with a smooth, glossy texture
• Leaf shape is lanceolate to elliptical, typically 25–35 cm long, with a deep green color and a smooth surface
• The edges may sometimes show slight undulation
  

Inflorescence (Spadix & Spathe)

• Spadix is cylindrical, emerging from a white or pale green spathe
• Inflorescence is not strongly fragrant but visually attractive to pollinators like small beetles
• Spathe is relatively large compared to the spadix and can be slightly reflexed at the edges

Growth Habit

• Terrestrial species, growing from a rhizome and forming a compact clump. It does not climb but maintains an upright, bushy growth form

Light Requirements

• Prefers bright, indirect light, although it can tolerate lower light levels
• Avoid direct sunlight, as it may scorch the leaves

Watering & Humidity

• Keep the soil evenly moist, allowing the top layer to dry slightly between waterings
• Avoid letting the soil stay waterlogged
  
• High humidity is crucial, ideally 60% or higher, which can be achieved with misting or a humidity tray

Soil & Potting Mix

• A well-draining, aerated potting mix is best. A mix of peat, perlite, and pine bark or orchid mix is ideal to ensure good drainage and moisture retention

Temperature & Fertilizer

• Ideal temperature range is 18°C to 25°C (64°F to 77°F)
• Keep the plant away from cold drafts
  
• Fertilize monthly with a balanced liquid fertilizer during the growing season. Reduce feeding during the dormant period

Division

• Rhizome division is the most common method of propagation
• Ensure each division has at least one healthy leaf and a portion of the root system

Seeds

• Seed propagation is possible, though not commonly practiced
• Seeds require warm, humid conditions and may take several months to germinate

Typical Issues

• Spider mites, mealybugs, aphids, and scale insects
• Fungal diseases like powdery mildew or root rot may occur if the plant is kept too moist or in poor drainage

Treatment Recommendations

• Use insecticidal soap or neem oil to treat pests
• For organic pest control, spray with a mixture of water and dish soap or rub the leaves with alcohol to remove pests

• Relatively rare species in cultivation, making it highly prized by collectors
• Its name reflects its lack of stipules, a rare feature among aroids

• Glossy, elongated leaves and attractive inflorescence make it a valued ornamental plant
• It is particularly sought after for its distinctiveness and rarity among aroids

Wild Population Status

• Not currently endangered
• Found in limited areas within Ecuador, making it vulnerable to habitat loss due to deforestation and agricultural development

Market Availability

• Rare in the market and typically only available through specialty nurseries or collectors
• Not widely cultivated or commercially available