Cololejeunea distalopapillata (E.W.Jones) R.M.Schust., a tiny leafy liverwort in the Lejeuneaceae family. In this blog post, we’ll dive into the details of this diminutive but captivating moss.
Cololejeunea distalopapillata is classified in the division Marchantiophyta and class Jungermanniopsida. The Lejeuneaceae family contains some of the smallest liverworts in the world. The specific epithet “distalopapillata” refers to the distally located papillae (small rounded protuberances) on the leaf cells.
Morphology and Identification
Identifying C. distalopapillata requires a keen eye and microscopic examination. This minuscule moss has leaves only 0.2-0.4 mm long. The leaves are distichously arranged (in two opposite rows) and have a rounded to ovate shape. Each leaf cell bears 1-3 distal papillae. The underleaves are bilobed and less than half as long as the leaves.
has a pantropical distribution, found in tropical regions around the world including Africa, Asia, Australia, and the Americas. It grows as an epiphyll, living on the surface of living leaves in humid lowland to montane rainforests. The moss mats form delicate networks on the leaves of trees and shrubs.
Ecological Roles and Adaptations
As an epiphyll, C. distalopapillata plays important roles in its ecosystem:
Cololejeunea distalopapillata may be one of the smallest mosses around, but it has an outsized ecological impact. Next time you’re in a tropical rainforest, take a closer look at the leaves around you – a miniature world of C. distalopapillata and other epiphylls awaits! What other tiny treasures might be hiding in plain sight?
