• Genus: Anthurium
• Botanical Background: Described as A. sinuatum by Bentham and Schott in 1857; in 1878 Engler described A. regnellianum, later synonymized under A. sinuatum.

• Geographical Range: Found in tropical South America, including Brazil (North, Northeast, Southeast, South and West‑Central), Colombia, French Guiana, Guyana, Paraguay, Suriname and Venezuela.
• Environment: Grows as an epiphyte on tree trunks in wet tropical and seasonally dry forests, favoring high humidity, warm temperatures and organic‑rich, well‑drained substrates.

Leaves

• Petiole 35–55 cm long
• Lamina divided into 5–7 pedately arranged
• Obovate segments 12–30 cm long
• Margins sinuate, apices acuminate, chartaceous and deep green

Inflorescence (Spadix & Spathe)

• Peduncle 25–50 cm long
• spathe maroon, lanceolate to linear‑lanceolate 8–18 cm long, persistent
• spadix slender, lavender or purple, 10–18 cm long, tapering to the apex

Growth Habit

• A scandent epiphyte with subterete green stems 1–2 cm thick and persistent triangular cataphylls 3–6 cm long
• reproduces via rhizomatous stems

Light Requirements

• Prefers bright, indirect light
• avoid direct sun to prevent leaf scorch

Watering & Humidity

• Water when the top layer of soil begins to dry
• Maintain high humidity (60–80%) with misting or a humidifier

Soil & Potting Mix

• Use a well‑draining, organic‑rich mix such as a bark‑based or orchid blend with good aeration and a slightly acidic pH (5.5–6.5)

Temperature & Fertilizer

• Thrives at 18–27 °C
• feed with a balanced liquid fertilizer every 4–6 weeks during active growth

Division and Cuttings

• Propagate by dividing rhizomatous clumps or taking stem cuttings with nodes placed in a moist medium

Seeds

• SGerminate in 4–8 weeks under warm (20–25 °C), humid conditions on a sterile substrate; less common method for home growers

Typical Issues

• Spider mites, mealybugs and scale
• Root rot can occur if overwatered
• Bacterial blight (Xanthomonas axonopodis) may appear in high humidity

Treatment Recommendations

• Treat pests with neem oil or insecticidal soap
• Manage bacterial blight by removing infected tissue and applying copper‑based bactericide
• Ensure good air circulation

• One of the few Anthurium species with palmately divided leaves, adding to the genus’s morphological diversity
• Contributes to nutrient cycling in the canopy as an epiphyte

• Valued by collectors for its dramatic divided foliage and climbing habit
• Makes a striking specimen in shaded tropical or indoor collections

Wild Population Status

• Not evaluated by IUCN
• Widespread in its native range and not considered

Market Availability

• Readily available from specialty aroid nurseries and as a houseplant under the accepted name A. sinuatum
• Less commonly offered as A. regnellianum