Anthurium rubioanum – Rare Anthurium from Northwestern Ecuador


Anthurium rubioanum is an exceptionally rare species discovered in the tropical forests of northwestern Ecuador. Described by botanist Thomas Croat, this elusive plant is believed to be either epiphytic or terrestrial and is adapted to the wet, humid environments of Ecuador’s Esmeraldas province. While its visual traits are not widely documented, it likely shares the bold leaf structure and upright habit typical of many tropical Anthuriums.


Unique Traits of Anthurium rubioanum



 
Rare Origin: Native to cloud-covered, tropical forest zones in NW Ecuador
 
Growth Form: Likely terrestrial or epiphytic with upright posture
 
Botanical Recognition: Described as a new species by Thomas Croat


Natural Habitat and Botanical Profile


This species grows in the humid lowland rainforests of Esmeraldas, a biodiversity hotspot in Ecuador. These forests experience year-round warmth and high rainfall, often exceeding 2,500 mm annually. Anthurium rubioanum likely inhabits shaded understories, rooting in leaf litter or clinging to tree trunks and mossy surfaces.

 
Origin: Northwestern Ecuador, Esmeraldas Province
 
Indoor Size: Estimated 50–80 cm in height based on related species
 
Growth Rate: Moderate to fast with consistent humidity and warmth
 
Toxicity: Presumed toxic if ingested; typical of aroids


How to Grow Anthurium rubioanum



 
Light: Bright but filtered light; direct sun may damage foliage
 
Watering: Keep substrate evenly moist, not soggy; allow partial drying between waterings
 
Humidity: Prefers 70–90%; essential for long-term health
 
Temperature: Best range is 18–27 °C with minimal fluctuations
 
Soil: Use an airy aroid mix with bark, coir, and perlite or pumice
 
Repotting: Every 1–2 years, or when roots become dense
 
Fertilizing: Apply diluted liquid fertilizer every 4–6 weeks in active growth periods
 
Propagation: Likely through division or stem cuttings, depending on form
 
Pruning: Remove older leaves to encourage airflow and shape the plant


Common Issues and What to Do



 
Browning Tips: Often linked to low humidity or salt build-up; flush soil and raise humidity
 
Leaf Yellowing: Usually caused by overwatering or low light; check roots and lighting
 
Pests: May attract thrips, spider mites, or mealybugs under stress; treat early with neem or insecticidal spray


Additional Growing Advice


Since Anthurium rubioanum remains relatively undocumented in cultivation, mimicking its presumed native habitat is the best approach. That means maintaining consistent warmth, high humidity, and bright filtered light. Growers who succeed with other rare rainforest Anthuriums will likely find this species rewarding once established. Documenting your care routine can also help expand collective knowledge for this rare plant.


Botanical Name Meaning


The genus name Anthurium comes from Greek—“anthos” meaning flower, and “oura” meaning tail—referring to the spadix structure of its inflorescence. The species name "rubioanum" honors an individual named Rubio, though specific details are not widely published. The species was described by Thomas B. Croat, a leading expert in the Araceae family.


FAQs about Anthurium rubioanum



 
Is this Anthurium difficult to grow?
It requires a controlled environment with high humidity and consistent care but is manageable for experienced growers.
 
Will it flower indoors?
Possibly, if humidity, light, and nutrition are well balanced, though this may take time due to its rarity.
 
Is it safe for pets?
No – like most Anthuriums, it likely contains calcium oxalate crystals that are toxic if ingested.


Ready to add a truly rare rainforest species to your collection? Order Anthurium rubioanum today and grow something exceptional.