Stenospermation ulei K.Krause

• Genus: Stenospermation
• Botanical Background: Stenospermation ulei was first described by botanist K.Krause, and its name honors German botanist Ulei, who contributed to the understanding of Brazilian flora.

• Geographical Range: Thrives in the moist, tropical rainforests, particularly in the lowland and mid-altitude regions of the country
• Environment: Prefers high humidity levels, well-drained, rich organic soils, and consistent warm temperatures; typically grows in shaded or filtered light environments, thriving under the canopy of tropical forests

Leaves

• Long, lanceolate and shiny
• Typically dark green
• Glossy finish
• Shape of the leaf is quite elongated

Inflorescence (Spadix & Spathe)

• Pale green spathe and a deep purple spadix
•  Arrangement and coloration are typical
• Pollinated by insects attracted to the scent, though specific pollinators are not well-documented.

Growth Habit

• Terrestrial plant but may have some epiphytic tendencies in nature
• Grows from a rhizome and produces large, arrow-shaped leaves that emerge directly from the ground

Light Requirements

• Bright, indirect light
• Direct sunlight can scorch its leaves, while too little light may stunt its growth

Watering & Humidity

• Regular watering is essential to keep the soil consistently moist, but not waterlogged
• Thrives in high humidity environments
• Occasional misting or a humidifier can benefit its growth

Soil & Potting Mix

• A well-draining potting mix rich in organic matter is ideal; blend of peat, perlite, and orchid bark will offer good aeration and moisture retention

Temperature & Fertilizer

• Thrives in temperatures between 65–85°F (18–29°C
• Balanced, water-soluble fertilizer diluted to half strength

Division

• Most common propagation method is division of the rhizomes

Stem Cuttings (if applicable)

• Can be carefully separated when the plant is dormant, and each section will grow into a new plant

Seeds

• Not widely practiced for this species, and seeds can be slow to germinate under natural conditions

Typical Issues

• Spider mites, aphids, and mealybugs
• Root rot is also a risk if the plant is kept in poorly drained soil or overwatered

Treatment Recommendations

• Insecticidal soap or neem oil to treat infestations
• Ensure the soil is well-drained and allow the top inch of soil to dry out before watering again

• Species is of interest to plant enthusiasts due to its rarity and distinct appearance
• Plays a role in its native ecosystem, where it helps maintain soil integrity and provides shelter to smaller organisms

• Prized for its unique leaf shape and deep coloration in its inflorescence
• Excellent addition to any aroid collection but is a more challenging species to grow compared to more common varieties

Wild Population Status

• Not formally listed as endangered, the species is rare in the wild due to habitat loss and limited geographical range. Conservation efforts in Brazil focus on preserving the biodiversity of the rainforest

Market Availability

• Not commonly found in the commercial plant market
• Rarity and the difficulty of cultivation make it more of a collector's item among aroid enthusiasts