Euceraea rheophytica

Euceraea rheophytica is a species of flowering plant in the family Salicaceae.
The plant is known exclusively from frequently flash-flooded riverbanks of a deep river canyon that bisects the Cerro de la Neblina massif in southernmost Venezuela at altitudes of.

Description

The plant is a densely branched shrub that grows to a height of with slender, glabrous stems. The leaves, which are glabrous and chartaceous, are narrowly lanceolate, measuring long by wide. They have an acute tip and an acuminate base, with scattered glandular punctations on the underside. The leaf margins have small, sharply ascending glandular teeth. There are 9-14 secondary veins on each side of the midvein, which connect to form a prominent vein near the edge. The petiole is long, and the paired stipules are long, clasping the terminal bud, but they soon fall off, leaving lateral scars that are wide with several small teeth. The inflorescences are located near the end of the branches and are laxly flowered spikes that are long. The flowers, which can be either bisexual or male, are sessile. The outer bract is cupular and about in diameter, while the inner bract has two lateral, keeled projections about long. The sepals are white, overlapping, and connected at the base for, measuring long and wide. There are 8 stamens; the 4 longer ones are long and are opposite of the sepals, while the 4 shorter ones are long and alternate with the sepals. The anthers are bilocular and nearly spherical, wide. There are 8 disk lobes, spatulate and hairy, long, alternating with the stamens and connected at the base. The rudimentary ovary is superior and tall. Euceraea rheophytica is a rheophyte.

In 2022, Euceraea became a synonym of the genus Casearia, though many sources still recognize the species by its first name. Plants of the World Online named the species Casearia ''rheophytica''.