Brachythecium rivulare

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Photo from www.cisfbr.org.uk

Taxonomy

Kingdom: Plantae

Division: Bryophyta

Subdivision: Musci

Class: Bryopsida (true mosses)

Subclass: Bryidae

Order: Hypnales

Family: Brachytheciaceae

Genus: Brachythecium

Species: Brachythecium rivulare

Descriptive notes

Brachythecium rivulare plants are yellow-green mosses that form loose mats of erect stems with (irregular-pinnate)branching. Sometimes they look "tree-like." Leaves are soft when wet, but appear spiky when dry. Leaves do not crowd around the branches, ans spread at angles between 30 and 90 degrees. Stem leaves are egg-shaped and between 2 and 3mm long that end is a slight sharp tip. The midrib is very short (less than half the length of the leaf). The leaf cells, when magnified, are large and balloon-like. Capsules (not present in this specimen) are "chubby macaroni-shaped" and bent. They, like the leaves, are 2-3mm long. The stalk of the capsule is maroon and rough.

B. rivulare are distinct from others in the genus as they end in a fine silver point at the end of each stem.

General distribution and habitat

Found on rocks and soils in shady, wet habitats. Most common along streams and near springs.

Campus distribution

Found on the path leading from the Alabama parking lot- in a shady, dry wooded area. The specimen was found on a dry log. It has dried leaf particles throughout.

Other Notes

Commonly known as the River Foxtail Moss.

Citations

McKnight, Karl B. Common Mosses of the Northeast and Appalachians. Princeton, NJ: Princeton UP, 2013.

FOUND BY EMILY MIKUCKI ON May 7, 2013