Shorea Trapezifolia (IMAGE) Helmholtz Association Caption Shorea trapezifolia in bloom. S. trapezifolia is one of the most dominant canopy species preferring well drained middle and lower hill -slope habitats. It is one of the annually flowering Shorea species which co-occurs with mast-flowering Shoreas. S. congestiflora, an annually flowering species is more dominant at lower altitudes than at Sinharaja - a vicariant of S. trapezifolia. Credit Nimal Gunatilleke Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.