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Anthurium hayanum O.Ortiz & M.Cedeño

Introduction & Overview

Common and Scientific Names

  • Scientific Name: Anthurium hayanum O.Ortiz & M.Cedeño
  • Common Name: No synonyms are recorded

Quick Facts

  • Origin: Endemic to Costa Rica’s Talamanca range
  • Features: Distinguished by a slender, dark lanceolate spathe and hanging foliage

Taxonomy & Classification

  • 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.

Natural Habitat & Distribution

  • 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.

Morphological Characteristics

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

Cultivation & Care

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

Propagation Methods

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

Common Pests & Diseases

Typical Issues

  • Spider mites, mealybugs and aphids
  • Root rot

Treatment Recommendations

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

Notable Traits & Uses

  • 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

 Conservation & Availability

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

References & Resources

Further Reading

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