Foliose lichens are some of the largest and perhaps most complex lichens. The thallus generally forms flat, leaf-like lobes.
The first PiP shows a Crustose lichen, possibly Lecanora muralis, growing on a sandstone wall. The thallus forms a crust over the substrate and is firmly attached to it. Consequently, the lichen normally cannot be collected intact without collecting a portion of the substrate along with it.
The second PiP shows a Fruticose lichen, possibly Usnea subfloridana growing an a larch tree. The thallus is extended up into a tufted or pendant branched structure and is attached to the bark by a basal holdfast.
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41 comments
Jaap van 't Veen said:
Boro said:
LotharW said:
Taormina said:
als würde es wo anders sich ansiedeln.
Steve Bucknell said:
Genus II. Lichen.
On a scale of Lustrous to Sockeye,
Fishscale to Fire-Dot. Not Ichthyosis:
Lichen. Fruiting bodies in a calcareous
spot. Goldspeck. Blushing.
O the diffuse eruption of dazzling papulæ!
Usher the Wild Lichen. Usher spring
and the furfuraceous scurf recurs.
The Brain-Scaled (the hairline cracked).
The Blue-Blistered, the Earth-Wrinkled.
Neither Strophulus nor stoppable.
Like wildfire rash the crustose rush
of successive crops. Tundra Sulphur,
circumpolar, the snowy excoriations.
So squats the Dog Lichen, the Freckle Pelt.
Cobblestoned, chronic, the not contagious.
Ghislaine said:
:)))
Edward Bowthorpe said:
Annemarie said:
Marie-claire Gallet said:
Marie-claire Gallet said:
Annaig BZH said:
Ko Hummel said:
The second Pip is realy great
Amelia replied to Ko Hummel:
Ko Hummel replied to Amelia:
protox said: