• Genus: Anthurium
• Botanical Background: Described by Ortiz & Cedeño‑Fonseca in 2020. The epithet hayanum honors British botanist Lord Alistair Hay for his contributions to Araceae studies.

• Geographical Range: Cantón Talamanca, distrito Telire in Limón Province, Costa Rica.
• Environment: Grows as a hemi‑epiphyte in lower montane rain and cloud forests (wet tropical biome), at elevations around 1200–1800 m where humidity is high.

Leaves

• Pendant, strap‑like blades that are narrow and coriaceous
• Glossy above and sparsely glandular beneath

Inflorescence (Spadix & Spathe)

• Typical aroid inflorescence with a spadix enveloped by a narrow spathe

Growth Habit

• Hemi‑epiphytic subshrub
• With short internodes and fibrous cataphylls

Light Requirements

• Bright filtered light
• Avoid direct midday sun 

Watering & Humidity

• Medium evenly moist
• Maintain 60–80 % humidity

Soil & Potting Mix

• Mix of orchid bark, sphagnum, perlite and charcoal in a slatted basket

Temperature & Fertilizer

• Temperatures range 18–30 °C

• Feed with half‑strength balanced fertilizer monthly in growing season

Division and Stem Cuttings

• Most common propagation method is rhizome division or node cuttings
• Aerial roots, rooted in moist sphagnum under high humidity

Seeds

• Fresh berries yield seeds that germinate on damp sphagnum at 24–26 °C within 3–4 weeks
• Seedlings require constant moisture

Typical Issues

• Spider mites, mealybugs and aphids
• Root rot

Treatment Recommendations

• Rirm water spray
• Neem oil or insecticidal soap
• Systemic insecticides for severe outbreaks

• Commemorates Lord Alistair Hay, former Director of the Sydney Botanical Garden

• Pendant strap‑leaf habit
• Ideal for hanging baskets
• Black spathe provides dramatic contrast in collections

Wild Population Status

• Limited range and habitat loss suggest potential vulnerability

Market Availability

• Extremely rare in cultivation
• Offered only by specialist collectors
• With export regulated under Costa Rican law