nch86's picture

Black lichen with yellow blobs

Observed: 20th November 2009 By: nch86nch86’s reputation in Fungi and Lichensnch86’s reputation in Fungi and Lichens
Black lichen with yellow blobs
Description:

Lichen found on sloping cap to wall

Identifications

Caution: Do NOT use iSpot to identify fungi to eat!

Some fungi are very poisonous so a mistaken ID could have serious consequences.

  • Mycophycophyta
    Confidence: It might be this.
  •  
    Likely ID
    about 6 different lichens
    Confidence: I'm as sure as I can be.
Species interactions

No interactions present.

Comments

gardener's picture

Its either a species of

Its either a species of Caloplaca or of Candelariella but you need to test with K to find out which.
Caloplaca species are K+ crimson, Candelariella are K-

nch86's picture

Black lichen with yellow blobs

One minute I'm up a ladder looking for jam tarts next I'm feeding lichen with breakfast cereals - oh maybe we're talking about potassium? Where do I get it and what do I do with it - I wish my lichen book had arrived.

gardener's picture

Welcome to the world of

Welcome to the world of lichen lunacy - lovely mental image of you up a ladder feeding the jam tarts with breakfast cereal!

The two basic lichen ID chemicals are K (potassium hydroxide) and C (sodium hypochlorite).
For K you can use the caustic soda pellets sold to clear drains, 1/2 teaspoon added to 100ml of water.
For C you need to buy the cheapest, thinnest household bleach without any additives.
Most chemists will stock small dropper bottles.

If you've a camera that will let you add voice memos its really helpful to photograph the K, C and KC results and add a voice memo with details to that photo.

There's more info about chemical tests on the British Lichen Society website, link below:
http://www.thebls.org.uk/content/chemical.html

nch86's picture

Black lichen with yellow blobs

Can't wait to have a go at climbing the ladder again especially with pockets full of dangerous chemicals and a pen and pencil in one hand (my camera doesn't do memos). I only hope my artificial leg doesn't fall off again like it did a while ago and nearly brained my wife who was steadying the ladder. Oh well it's all in the cause of science !

I'll report back shortly - hopefully not from a hospital bed.

By the way I did go looking for jam tarts on the other lichen but found structures more like little stone plants - I'll add to/replace to my previous if I can or upload a new one if not.

gardener's picture

Take care of yourself, but oh

Take care of yourself, but oh the mental images your description conjures up ........brave wife if your leg has already clobbered her and yet she's still willing to go back out and hold the ladder again!

nch86's picture

Black lichen with yellow blobs

Yellow blobs turned crimson when I applied diluted caustic soda (tested on a Xanthoris first) so I guess this one is a Caloplaca

gardener's picture

That sorts the genus out

That sorts the genus out which is the first step!

There are a number of Caloplaca's it could be, including C. holocarpa, C. crenularia, C. flavovirescens and C. oasis.