Observation 316756: Agrocybe praecox group

When: 2018-05-20

Collection location: North Court SE, Olympia, Washington, USA [Click for map]

Who: Drew Henderson (Hendre17)

Specimen available

The mycelium and subsequent current fruiting of Spring Agrocybe “came along for the ride” with alder chips I laid last Fall for all Rhododendron’s on our back botanical garden. The chips of alder have a very stable PH and are perfect for adding micronutrients and fertilizer.

The persistent cracking of caps, even with young specimens, time of year and occurrence and “machined looking” stations at the apex of stems are all indicative for Spring Agrocybe. Also, a very common feeder on bark chips in Sping gardens when folks all get to Sping cleaning and weeding. I estimate that other than Morchella species, the Sping agrocybe group, with all their varying morphologies and sizes are the second most ID requested species this time of year on most all PNW Facebook forums and iNaturalist.

I have noted blue hued chips that are in the mix, as well, implying a future fruiting for Chlorociboria cups will most likely be in the cards ;).

Low 60’s over the last week with mixed rain/sunshine here in Olympia, WA.

Spring Agrocybe are edible, but are not a species I would recommend for experimentation and or culinary pursuits due to easy confusion with similar, brown spored genus=eg=Hebeloma.

Species Lists


Stem apex striations, consistant cap cracking(even with young fruiting bodies) and common occurrence with garden bark chip mulch are indicative for the species/Spring Agrocybe complex.
Left hand for scale and color context. Although, I have seen and harvested collections with caps reaching 10cm in width on numerous occasions.

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Created: 2018-05-20 15:47:52 BST (+0100)
Last modified: 2018-05-20 15:47:59 BST (+0100)
Viewed: 21 times, last viewed: 2019-02-15 15:39:18 GMT (+0000)
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