Breutelia merrillii: A Captivating Moss of the Bartramiaceae Family

Breutelia merrillii Broth.: A Fascinating Moss of the Bartramiaceae Family

Introduction

The world of mosses is full of fascinating species, each with their own unique characteristics and ecological roles. One particularly interesting moss is Breutelia merrillii Broth., a member of the Bartramiaceae family. In this blog post, we’ll dive into the details of this captivating bryophyte.

Background

Breutelia merrillii Broth., also commonly known as just Breutelia, is a species of moss belonging to the Bryophyta division and Bryopsida class. It was named after Elmer Drew Merrill

, an American botanist who made significant contributions to the study of Philippine flora in the early 20th century.

Morphology and Identification

B. merrillii forms loose tufts or mats. The stems are 5-10 cm long

, branched, and covered in lanceolate leaves that are 3-5 mm long. The leaves have a strong midrib that extends to the tip. Capsules are cylindrical, 2-3 mm long, borne on a

seta (stalk) that is 1-2 cm long. The peristome (toothed rim around the capsule mouth) is double.

Global Distribution and Habitat

This moss has a relatively limited distribution, being found primarily in Southeast Asia, including the Philippines, Indonesia, and Papua New Guinea. It grows on soil, rocks, and tree trunks in montane forests at elevations of 1000-2500 meters.

Ecological Roles and Adaptations

Like many mosses, B. merrillii plays important ecological roles:

• Helps retain moisture in its environment
• Provides habitat for micro-organisms
• Participates in nutrient cycling
• Serves as a bioindicator of air quality
  

  

It has several adaptations that allow it to thrive in its montane habitat:

• Thick cell walls to prevent water loss
  

  

• Ability to absorb water and nutrients over its entire surface
• Can survive desiccation by going dormant

Conclusion

Breutelia merrillii Broth. may be a small and unassuming moss, but it has an important place in the ecosystems where it occurs. Its unique morphology and adaptations make it well-suited for life in montane forests. Next time you’re hiking in the mountains of Southeast Asia, keep an eye out for this fascinating species! What other secrets of the bryophyte world are waiting to be uncovered?