Stenospermation weberbaueri Engl.

• Genus: Stenospermation
• Botanical Background: The species was named by English botanist George Engelmann in 1878, in honor of Jakob Weberbauer's contributions to botany, particularly his exploration of the Andean flora. Weberbauer’s pioneering studies of the region's plant life helped clarify the ecological zones and the relationships among native species.

• Geographical Range: Primarily found in the cloud forests of the Peruvian Andes, at elevations ranging from 2,000 to 3,000 meters
• Environment: Flourishes in environments with moderate temperatures (12°C to 20°C) and high humidity, often preferring soils that are well-drained yet consistently moist; adapted to the cool, misty conditions of its native habitat and requires similar conditions in cultivation, making it a challenging but rewarding plant for enthusiasts

Leaves

• Long, lanceolate, and dark green
• Glossy finish
• Smooth texture

Inflorescence (Spadix & Spathe)

• Relatively small but distinctive, with a pale yellow color that contrasts against the dark green foliage
• Generally white to pale green, wrapping around the spadix in a cylindrical shape
• Minimal scent, with pollination being primarily entomophilous, relying on small insects

Growth Habit

• Grows directly on the forest floor rather than as an epiphyte or climber
• Produces a rhizome from which new growth emerges seasonally, allowing it to spread over time

Light Requirements

• Bright, indirect light, making it ideal for placement near a window with filtered sunlight
• Direct sunlight may scorch the leaves

Watering & Humidity

• Moderate watering is necessary, with the soil kept moist but not soggy
• High humidity (60% or above) is essential for healthy growth
• Regular misting is often needed in drier climates

Soil & Potting Mix

• A well-draining, slightly acidic potting mix is ideal (peat, perlite, and orchid bark provides the necessary drainage while maintaining moisture)
• Pot with drainage holes is essential to avoid root rot

Temperature & Fertilizer

• Temperatures between 18°C and 24°C are ideal
• Balanced, diluted liquid fertilizer can be applied every 4-6 weeks to support healthy growth

Division

• Propagation is most effectively done through rhizome division

Stem Cuttings (if applicable)

• Stem cuttings with a node can be rooted in water or soil

Seeds

• Possible if seeds are available. They require warm temperatures and high humidity for successful germination.

Typical Issues

• Spider mites, mealybugs, and aphids
• Root rot is also a concern in overly moist conditions.

Treatment Recommendations

• Insecticidal soap or neem oil
• Ensure proper drainage and reduce watering frequency

• Plays an ecological role in its native habitat, where it contributes to the understory flora of cloud forests, providing food and shelter for a range of insects

• Valued for its striking foliage and unique inflorescence
• Rarity and high altitude origin make it a prized specimen for collectors and enthusiasts of highland tropical plants

Wild Population Status

• No significant conservation concerns at present, but habitat loss due to deforestation could pose a threat to wild populations in the future. Conservation efforts in the region are focused on preserving cloud forest ecosystems

Market Availability

• Not widely available in mainstream markets
• Can sometimes be found in specialty nurseries or among dedicated aroid enthusiasts
• Considered a collector’s plant due to its rarity and specific care requirements