Nabalu corneri (A.Hay) S.Y.Wong & P.C.Boyce

• Genus: Nabalu (monotypic, established 2018)
• Botanical Background: Described as Schismatoglottis corneri by A. Hay (2000), it was reassigned to its own genus by Wong & Boyce in Webbia (2018).

• Geographical Range: Endemic to wet tropical forests of western Sabah, Borneo, at 550–1 000 m elevation.
• Environment: Thrives in disturbed forest gaps and rocky riverbanks under consistently high humidity. 

Leaves

• Large, sagittate, mid‑green blades with prominent veins

Inflorescence (Spadix & Spathe)

• Nodding
• Lower spathe green, upper limb white and lanceolate
• Spadix creamy with a tapering appendix

Growth Habit

• Terrestrial, massive pachycaul geophyte reaching ~2.3 m tall via a stout rhizome

Light Requirements

• Bright, indirect

Watering & Humidity

• Even moisture; >60% humidity

Soil & Potting Mix

• Rich, well‑draining mix (peat + perlite)

Temperature & Fertilizer

• 18–30 °C
• Balance feed monthly in growing season

Division

• Rhizome sections with a growing bud

Seeds

• Rare
• Require fresh sowing under high humidity
  

Typical Issues

• Spider mites, mealybugs, root rot

Treatment Recommendations

• Neem oil or insecticidal soap
• Ensure proper drainage

• Monotypic genus named after botanist E.J.H. Corner

• Valued by collectors for its striking form and foliage

Wild Population Status

• Predicted “threatened” with high confidence

Market Availability

• Very rare
• Mostly in specialist collections