*large.jpg from: https://www.inaturalist.org/observations/142328401*

Thamnobryum microalopecurum: The Fascinating Moss of the Neckeraceae Family

Introduction

Today we’re diving into the world of Thamnobryum microalopecurum (Kindb.) Nieuwl., a captivating moss species of the Neckeraceae family. Also known simply as Thamnobryum, this moss is sure to pique the interest of any enthusiast. Let’s explore what makes this tiny plant so special!

Background

Thamnobryum microalopecurum is a species of moss belonging to the Bryophyta division and Bryopsida class. It is part of the Neckeraceae family, which contains over 200 species worldwide. The specific epithet “microalopecurum” refers to the small, fox tail-like appearance of its branches.

Morphology and Identification

T. microalopecurum forms dense, green to yellowish-green mats. The stems are pinnately branched and can reach lengths of 3-10 cm. Leaves are ovate-lanceolate, concave

Habit-of-Thamnobryum-neckeroides-in-the-Bialy-Potok-stream-valley-in-the-Pieniny-Photo.ppm from: https://www.researchgate.net/figure/Habit-of-Thamnobryum-neckeroides-in-the-Bialy-Potok-stream-valley-in-the-Pieniny-Photo_fig1_326808166

, and have serrated margins. A key identifying feature is the presence of a strong, single costa (midrib) that extends nearly to the leaf tip.

Global Distribution and Habitat

This moss has a wide distribution, found in Europe, Asia, Africa, and the Americas. It typically grows on rocks, tree bases, and decaying logs in moist, shaded habitats such as forests and ravines. T. microalopecurum prefers calcareous substrates and is often associated with limestone.

Ecological Roles and Adaptations

Like other mosses, Thamnobryum plays important ecological roles:

Erosion control: Its dense mats help stabilize soil and prevent erosion
Water retention: Moss acts like a sponge, absorbing and slowly releasing moisture
Microhabitats

12103150303_38888e8272_z.jpg from: https://www.flickr.com/photos/59049058@N08/12103150303/

large.jpeg from: https://www.inaturalist.org/observations/155059923

: Provides shelter for tiny invertebrates and germination sites for seeds

T. microalopecurum shows adaptations to shady, moist environments:

*medium.jpg from: https://www.inaturalist.org/taxa/169668-Thamnobryum-neckeroides*

*il_fullxfull.2622927616_ptfa.jpg from: https://moss-wholesale.com/products/tree-moss-terrarium-moss-thamnobryum-alopecurum-moss-with-phytosanitary-certification-and-passport-grown-by-moss-supplier*

Concave leaves help channel water toward the stem
Thick cell walls prevent desiccation during dry periods
Rhizoids anchor the moss and absorb nutrients and moisture

Characteristic	Description
Division	Bryophyta
Class	Bryopsida
Family	Neckeraceae
Genus	Thamnobryum
Species	T. microalopecurum
Stem	Pinnately branched, 3-10 cm
Leaves	Ovate-lanceolate, concave, serrated margins
Costa	Single, strong, nearly to apex
Habitat	Rocks, tree bases, logs in moist forests
Substrate	Often calcareous

Conclusion

Thamnobryum microalopecurum may be small, but it is mighty in its ecological importance and intriguing in its adaptations. Next time you’re in the woods, take a closer look – you might just spot this furtive fox-tail moss! What other tiny treasures are hiding in plain sight, waiting to be discovered?