Observation 3143: Calvatia pachyderma (Peck) Morgan
When: 2007-04-24
No herbarium specimen

Notes: Found in open grassy area. Fits the description of C. gigantea except they are on the small side, 7-8cm across. West coast version of Calvatia booniana seems more apt.

Proposed Names

80% (3)
Eye3 Eyes3
Used references: Based on the size, habitat, thick endoperidium and e-mail from Fred Stevens, I now believe these are C. pachyderma.

Please login to propose your own names and vote on existing names.

Eye3 = Observer’s choice
Eyes3 = Current consensus


Add Comment
Habitat question
By: Ron Pastorino (Ronpast)
2007-04-24 18:27:48 AKDT (-0800)
I was put off that trail by the habitat..“confined to the arid or semi-arid regions of western North America”. But now see that there is a “less warty species along the west coast”. Will make the change.
Calvatia booniana
By: Darvin DeShazer (darv)
2007-04-24 17:59:02 AKDT (-0800)

The western giant puffball is Calvatia booniana and this looks like it. It also lacks a sterile base as does Calvatia gigantea but instead of a smooth exoperidium it has one that breaks into large flat scales that become lightly pigmented in the center.

Created: 2007-04-24 12:51:55 AKDT (-0800)
Last modified: 2013-01-23 15:45:56 AKST (-0900)
Viewed: 137 times, last viewed: 2016-09-24 18:00:40 AKDT (-0800)
Show Log