Anthurium ramosense Croat

• Genus: Anthurium
• Botanical Background: Described as a new species in 2010 by Thomas B. Croat, Xavier Delannay & Carla V. Kostelac in Willdenowia 40:97.

• Geographical Range: Endemic to humid tropical rainforests of Colombia, typically in mid-elevation cloud forest zones.
• Environment: Grows as an epiphyte on tree trunks and branches in shaded understories, thrives in consistently moist, well-drained microsites with high humidity (70–90 %) and diffuse light.

Leaves

• Ovate-elliptic to triangular with a cordate base and acute apex
• Subcoriaceous, matte surface
• Dark green with subtle pale-lineate venation radiating from the midrib

Inflorescence (Spadix & Spathe)

• Pale green spathe, slender, 3–5 cm long
• Cylindrical spadix, greenish at anthesis
• Releases stigmatic fluid to attract small insects for pollination

Growth Habit

• Epiphytic herb with a creeping rhizome; internodes short and thick
• Cataphylls lanceolate, semi-persistent at upper nodes
  
• No true tubers, roots arise along the rhizome and at nodes

Light Requirements

• Bright, indirect light
• Avoid direct sun to prevent leaf scorch

Watering & Humidity

• Keep growing medium evenly moist but not waterlogged
• Maintain high ambient humidity (60–80 %)

Soil & Potting Mix

• A loose, well-aerated mix (orchid bark, perlite, sphagnum moss)

Temperature & Fertilizer

• Ideal range 18–28 °C
• Feed monthly during active growth with a balanced, diluted liquid fertilizer

Division & Cuttings

• Divide the rhizome, ensuring each section has at least two growth nodes
• Stem cuttings with a node can also root when placed in a moist medium

Seeds

• Uncommon in cultivation
• Fresh require warm (25–28 °C), humid conditions and germinate in 4–6 weeks

Typical Issues

• Mealybugs, spider mites, and scale insects on leaf undersides
• Root rot and fungal issues from overwatering

Treatment Recommendations

• Insecticidal soap or neem oil sprays
• Targeted systemic insecticides for persistent infestations

• Section Cardiolonchium species often exhibit B‑chromosomes and winged petioles
• The subtle pale venation makes A. ramosense a collectible among aroid enthusiasts

• Valued for its compact epiphytic habit and distinctive leaf pattern
• Suited to terrariums, vivaria or as a specimen in well‑lit indoor collections

Wild Population Status

• Likely limited distribution in Colombia’s specialized cloud forests

Market Availability

• Rare in general trade 
• Occasionally offered by specialist aroid nurseries and collectors