Anthurium rotundilobum Engl.

• Genus: Anthurium
• Botanical Background: First published by Adolf Engler in Das Pflanzenreich IV.23B: 275 (1905). The epithet “rotundilobum” refers to the rounded lobes of its leaf blades.

• Geographical Range: Endemic to Colombia, predominantly recorded in lowland to montane rainforests.
• Environment: Terrestrial understory plant in humid, shaded conditions with consistently moist soils in wet tropical biomes.

Leaves

• Blades subcoriaceous, glossy on the adaxial surface
• Broadly hastate‑trilobed
• Venation with six lateral veins on posterior lobes

Inflorescence (Spadix & Spathe)

• Leathery, glossy spathe subtending a rod‑like spadix
• Spathe color in this genus ranges from pale green to white
• Cylindric spadix is usually yellowish and bears tiny unisexual flowers in spirals

Growth Habit

• Evergreen subshrub
• Terrestrial
• Without tubers or specialized rhizomes

Light Requirements

• Bright, indirect light
• Avoid direct sun which may scorch leaves

Watering & Humidity

• Substrate moist but well‑drained
• Water when the top 2 cm of soil dries
• Maintain high humidity (≥70%) 

Soil & Potting Mix

• A loose, organic‑rich mix (bark, coco coir, perlite) 

Temperature & Fertilizer

• Temperatures range 18–29 °C (65–85 °F)

• A balanced, high‑phosphorus fertilizer every 4–6 weeks during active growth

Division and Stem Cuttings

• Divide at the rhizome or crown during repotting
• Stem cuttings with at least one node can root in high‑humidity conditions

Seeds

• Contain small black seeds
• Surface‑sow on a moist
• Sterile mix under warm (24 °C) and humid conditions

Typical Issues

• Spider mites, mealybugs and scale
• Root rot

Treatment Recommendations

• Insecticidal soaps or horticultural oils
• Reduce watering
• Fungicide 

• Name highlights its rounded leaf lobes (“rotundilobum”)
• Attract insect pollinators through visual cues and protogynous flowering phases

• Valued by collectors for its bold, trilobed foliage

• Less common in trade than more widely cultivated Anthurium species

• Sought‑after novelty

Wild Population Status

• Not evaluated by the IUCN
• Habitat loss from deforestation in Colombian rainforests could pose future risks

Market Availability

• Rare in commercial trade

• Sometimes offered by specialist aroid nurseries or through plant‑exchange networks