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Is this by any chance Peltigera venosa 'Fan Lichen'?

Posted by ruth_mi z5MI (My Page) on
Thu, Mar 17, 11 at 12:47

I'll start by saying I know virtually nothing about lichens.

This is one of my favorite things in my garden, and I didn't plant it. It's growing throughout my path, and has been increasing for several years.

I call it a lichen, but for all I know, it's not. Today I Googled "fan shaped lichen" and the name above is what I came up with. It does look very similar. Can anyone help me identify this? Thanks very much!

Here is a link that might be useful: lichen?

Follow-Up Postings:

RE: Is this by any chance Peltigera venosa 'Fan Lichen'?

Hadn't heard of that one before, but I believe yours is Marchantia polymorpha. It is fairly common and is considered a weed in plant nurseries. It likes a little fertilizer if you want it to encourage it. The little cup-shaped structures are called gemmae cups and contain fragments called gemmae that can produce new plants.

RE: Is this by any chance Peltigera venosa 'Fan Lichen'?

Thanks - I'd never heard of those, but that's definitely what I have based on some pictures I just found online. It beats weeds or grass between the flagstones, so maybe I'll take your advice and fertilize it. Thanks again!

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