Observation 28871: Isaria tenuipes Peck (Site ID) (Cordyceps tenuipes)

When: 2007-10-09

Collection location: Near Nevado de Colima, Mexico [Click for map]

Who: Alan Rockefeller (Alan Rockefeller)

No specimen available

Found in the sand on the side of a dry stream bed.

Species Lists


Proposed Names

18% (3)
Recognized by sight
35% (4)
Recognized by sight: the asexual phase.
-7% (4)
Recognized by sight: I have found this on several occasions in West Virginia growing on moth pupae. See observation # 22947
48% (2)
Recognized by sight: conidia details ideal for determining to sp., but I. tenuipes and I. farinosa are said to differ macroscopically by a lemon yellow stipe in the former and orange stipe in the latter.
Used references: Kathy Hodge’s comments http://www.flickr.com/photos/19369983@N06/3283766212/

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= Observer’s choice
= Current consensus


Add Comment
we are both right.
By: Debbie Viess (amanitarita)
2009-11-27 23:26:34 CST (-0500)

googling Paecilomyces farinosus gets a spot-on image for Allen’s photo. But Isaria is the new genus name for it, according to this reference here:


Fungi sp.
By: Patrick Harvey (pg_harvey)
2009-11-27 12:09:08 CST (-0500)

Looks suspiciously like something from Plantae too … top is
kind of fern-like. See what happens in a few days if there are
any left around there.

By: Michael W (Michael Wallace)
2009-11-27 03:19:53 CST (-0500)

That’s beautiful Alan, what was it fruiting from, something in the sand or the sand itself?
I wonder if it belongs in Isaria or Cordyceps?