Observation 64335: Hypogymnia physodes (L.) Nyl.

When: 2011-03-12

Collection location: Millersylvania State Park, Thurston Co., Washington, USA [Click for map]

Who: Drew Henderson (Hendre17)

No specimen available

Abundant on logs in the parking lot.

Temp- mid 50’s hard rain last 24 hours.



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Lichens of North America is spectacular
By: Jason Hollinger (jason)
2011-03-13 15:28:56 PDT (-0700)

Every lichenologist has a copy of Brodo’s classic. I’ve never actually seen the Purvis book. It looks like a more abstract treatment of lichenology. Brodo’s, on the other hand, is focused more on being a general field guide, although it contains excellent chapters on ecology, chemistry, physiology, cultural uses, etc. Brodo’s is unique in its class because it covers all types of lichens (most “popular” guides only include macrolichens) and because of its incredible quality of photography. There are more complete treatments of smaller regions, but none have such wide applicability and broad coverage as Brodo’s.

For your region, McCune’s “Macrolichens of the Pacific Northwest” is another “must”. Only covers macrolichen, of course, but I believe it has 100% coverage of known macrolichen species, and its taxonomy is as up-to-date as you can get.


Thanks Jason :)
By: Drew Henderson (Hendre17)
2011-03-13 14:28:12 PDT (-0700)

Sorry bout that- I was posting all my observations from my excursion to the park yesterday on fleshy fungi and was totally locked in to writing “fruiting on” for all my posts. I went ahead and changed the snafu.

By the way- which book should I buy for lichonology? I am debating between Purvis’ and Brodo at this point.

Confusion about fruiting
By: Jason Hollinger (jason)
2011-03-13 14:20:38 PDT (-0700)

It’s worth noting that, unlike mushrooms, with lichens you see the whole thing, not just the fruiting body. This species, for example, very rarely produces sexual fruiting structures (apothecia) — it reproduces apparently exclusively asexually via granular-powdery “soredia”. (You can see some if you look closely, they appear around exploded or disintegrating lobe-tips in this species.) The thallus of this specimen is likely many years old, and will persist long after spring rains stop, reviving rapidly within minutes or even seconds of the next rain or heavy dew.

Created: 2011-03-13 13:41:02 PDT (-0700)
Last modified: 2011-03-13 14:22:59 PDT (-0700)
Viewed: 78 times, last viewed: 2018-08-13 22:04:24 PDT (-0700)
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