moss-Barbula unguiculata

Barbula unguiculata

Barbula unguiculata photo by Bob Klips

Barbula unguiculata at Batelle Darby Metro Park. December 3, 2011.

Barbula unguiculata photo by Bob Klips

Barbula unguiculata and Bryum argentrum sporophytes at Batelle Darby Metro Park. November 5, 2011.

Barbula unguiculata photo by Bob Klips

Barbula unguiculata at Batelle Darby Metro Park. November 3, 2012.

Barbula unguiculata photo by Bob Klips

Barbula unguiculata leaves.

Barbula unguiculata photo by Bob Klips

Barbula unguiculata leaf tip showing also pluripapillose leaf cells.

Barbula unguiculata photo by Bob Klips

Barbula unguiculata, dry, on limestone fence at Duranceaux Park, Columbus, Ohio. December 13, 2013.

Barbula unguiculata photo by Bob Klips

Barbula unguiculata, dry, on limestone fence at Duranceaux Park, Columbus, Ohio. December 13, 2013.

How to recognize Barbula unguiculata:  This is a small acrocarp that grows with spreading oblong lanceolate leaves when moist, and incurved contorted when dry. The leaves are 1-2 mm long with an apiculate tip that can be seen with a handlens, and recurved margins. If it happens to have capsules, the peristome at the top of the capsule has long twisted hairlike red teeth. Under the microscope the densely pleuripapillose cells on the upper part of the leaf are obvious. A cross section of the leaf shows the single costa, which extends into the leaf tip, has two stereid bands, clusters of thick-walled cells on either side of a row of large thin-walled guide cells.

Where to find Barbula unguiculata:  This weedy moss grows on bare soil of roadsides, in disturbed places, on boulders, and cliff crevices.

Barbula-unguiculata-simplemap

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