Hypogymnia physodes
Alternative names
Dark Crottle
Description
Thallus foliose, lobes smooth and reflective above, flat to convex, hollow, pale to green-grey, dark brown to black beneath and lacking rhizines, tips often turned up and sorediate; apothecia rare, stalked, with red-brown discs.
Similar Species
Very variable and, when lobes are flat, can resemble Hypotrachyna laevigata, but the latter is larger and has repeatedly-branched rhizines beneath.
Identification difficulty
Recording advice
Unless identified by a recognised expert, a photo is required and the specimen should be examined with a microscope. In the comments box, state the key or ID method used and describe the size and identifying characters.
Habitat
On acid-barked trees and heather (Calluna) stems, also terrestrial on base-poor dunes.
When to see it
All year round.
UK Status
Throughout Britain and often very common.
VC55 Status
Occasional in Leicestershire and Rutland.
Geoffrey Hall
Shepshed, Ives Head
04 December 2011
Geoffrey Hall
Shepshed, Ives Head
04 December 2011
Leicestershire & Rutland Map
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MAP KEY:
Yellow squares = NBN records (all known data)
Coloured circles = NatureSpot records: 2020+ | 2015-2019 | pre-2015