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Images of British Lichens



Cladonia ochrochlora Flörke


Podetia unbranched, pointed or more often terminating in small, abruptly widened cups with a crown-like ring of shortly stalked brown pycnidia around the margin, podetial surface sorediate and with corticate patches and small squamules, these sometimes with distinct yellow or yellow-green tints when very fresh but drying more grey-green, more continuously corticate towards the base of the podetium, also partly corticate within the cups; basal squamules incised, white beneath, often sparsely sorediate on margins; apothecia brown, developed on the margins of the podetial cups. Widespread and locally common on damp, mossy logs and stumps.

Small podetia can be difficult to separate from C. coniocraea, with which this species has been confused or considered conspecific. Fresh podetia can be distinctly tinted yellow or yellow-green, as suggested by the specific name, but this makes the key in Purvis et al. (1992) and Smith et al. (2009) somewhat problematic.

Refs: Smith et al. (2009), 332; Purvis et al. (1992), 205; Nordic Lichen Flora (2013) 5: 60, 104 (photo); Dobson (2005), 141 (line illus.); Dobson (2011), 148 (line illus.); Jahns (1983), 220-221 (photo); Krog et al. (1994), 163 (photo); Holien & Tønsberg (2008), 91 (photo); Stenroos et al. (2011) 154-5 (photo); Valcárcel et al. (2003), 164-5 (photo); Thomson (1967) 113, plate 14, fig.69 (photo); Lichen Atlas of the British Isles 2: 403 (1996). [Photographs in Hinds & Hinds (2007) and Brodo et al. (2001) seem, to my eyes, to be C. coniocraea with the corticate zone of the podetium extending higher than usual, but this illustrates the sometimes uncertain or varying interpretation of these two species.]

FGBI: http://fungi.myspecies.info/all-fungi/cladonia-ochrochlora (excluding 2nd photo, which shows red apothecia)

 
Cladonia ochrochlora
Glen Tilt, Perthshire, April 2008 (rather poor photograph rescued after camera malfunction, nuances of colour lost)
 
Cladonia ochrochora, close up of podetia
Glen Tilt, Perthshire, April 2008, studio shot of revived material from above colony, strongly yellow tints in fresh material now hardly apparent
 
Cladonia ochrochlora with apothecium
Glen Tilt, Perthshire, April 2008, single podetium with apothecium (surrounded by C. polydactyla)
 
Cladonia ochrochlora, with apothecium
Kindrogan, Perthshire, April 2008, projecting podetium with apothecium,
in mixed Cladonia community on vertical side of old pine (Pinus sylvestris) stump


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Uploaded March 2009, last updated January 2016