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Usnea subfloridana

Usnea subfloridana

Description:

Fruticose lichen. Bushy, pendulous lichen with colours in the grey-green to yellow-green range, with a distinctive blackened base with annular rings or cracks. The branches are cylindrical and tapered (no flattening). The side branches are not narrowed where they attach to the trunk (they are in some species). The trunk and branches are covered in patches of soredia or isidia. Apothecia are rare and when present there are very few (maybe three on a specimen). Some specimens may consist of just a single stem and a few side branches. This divergent range of types (bushy to simple stems) makes Usnea difficult to identify.

Habitat:

On the trunk of an oak tree

Notes:

Camera Model: NIKON D300. Exposure Time: 1/60 sec.; f/32; ISO Speed Rating: 200. Focal Length: 90.0 mm. Flash fired

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arlanda
Spotted by
arlanda

O Saviñao, Galicia, Spain

Spotted on Aug 13, 2012
Submitted on Oct 12, 2012

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