Stenospermation zeacarpium Madison

• Genus: Stenospermation
• Botanical Background: Named by botanist Madison, this species has been an important subject in the study of tropical Araceae. The name "zeacarpium" refers to its distinct seed morphology, which has been pivotal in differentiating it from other Stenospermation species.

• Geographical Range: Native to the rainforests of Costa Rica and Panama, it thrives at moderate elevations within these regions
• Environment: Prefers humid environments with high rainfall and well-draining soils; naturally grows in shaded understory areas where temperatures remain warm and constant

Leaves

• Large, elongated leaves
• Typically dark green and glossy
• Size can reach up to 60 cm long

Inflorescence (Spadix & Spathe)

• Pale yellow or creamy white spathe
• Spadix is cylindrical and can reach lengths of up to 30 cm
• Subtle scent that is most noticeable at dusk, aiding in nocturnal pollination by insects

Growth Habit

• Primarily terrestrial, growing in rich, organic soils with a rhizomatous root system that supports its upright growth
• Does not climb or exhibit epiphytic behavior like some other Aroids

Light Requirements

• Bright, indirect light, mimicking the dappled sunlight of its native understory habitat
• Direct sunlight may scorch its leaves

Watering & Humidity

• Requires consistent moisture but should never sit in waterlogged soil.
• Regular misting or placing the plant in a high-humidity environment (above 60%) is recommended to mimic its natural conditions

Soil & Potting Mix

• A Well-draining, rich, organic soil with a slightly acidic pH is ideal(peat-based mix with added perlite or orchid bark ensures proper drainage)

Temperature & Fertilizer

• Thrives in temperatures between 20-28°C (68-82°F)
• Balanced, water-soluble fertilizer, though over-fertilization should be avoided

Division

• Rhizome division is the most common propagation method

Stem Cuttings (if applicable)

• Ensure each division has at least one growing tip and roots to encourage successful regrowth

Seeds

• Seeds can be sown, but they require a warm, humid environment to germinate. Fresh seeds are more viable, and germination may take several weeks

Typical Issues

• Spider mites, mealybugs, and aphids 
• Root rot is a concern if the soil remains waterlogged

Treatment Recommendations

• Insecticidal soap or neem oil for organic control
• Ensure proper drainage and remove affected roots
• Fungicide treatment may be necessary in severe cases
  

• Species' name "zeacarpium" refers to its seed shape, which resembles the grain of maize
• Not widely known in the horticultural world but is valued for its unique aesthetic

• Prized for its glossy, large leaves and unique spathe and spadix structure
• Attractive addition to tropical plant collections

Wild Population Status

• No significant conservation concerns currently, although habitat loss in Central America could pose future risks

Market Availability

• Relatively rare in cultivation
• May be difficult to find in mainstream nurseries but is sought after by Aroid enthusiasts and collectors