Observation 32006: Hysterangium Vittad.
When: 2010-01-14
Who: BakerSt10
No herbarium specimen
0 Sequences

Proposed Names

28% (1)
Recognized by sight: 1.5 cm Blue green sponge like interior, Thin white outer coating Some type of hypogeous fungi
-7% (3)
Recognized by sight: According to Field Guide to North American Truffles, p. 27, this loculate hypogeous fungi can have both a peridium and gleba which quickly turns bluish. In more mature specimens, only the basal columella, usually located outside of the sporocarp, quickly turns blue. Without an actual cross-section and spore work, difficult to be certain. Both interior columella and peridium can stain or bruise blue. Typically associated with Douglas fir, true fir or hemlock.
91% (2)
Eye3 Eyes3
Recognized by sight: Described as having a bluish interior, hard, rubbery feel. Hysterangiums are like superballs in texture until they become nearly overripe, when they can develop aromas of very ripe olives and become somewhat brittle/soft. Hysterangiums are widely mycorrhizal. Known host plants include pine, hemlock, Douglas-fir, and oak. Columella is within the gleba, gelatinous to cartilaginous, often transluscent bluish or greenish; stipe absent; typically with enlarged or slightly thickened single rhizomorphic attachment near the bottom of the sporocarp which easily separates (as in H. separabile). Field Guide to North American Truffles describes H. occidentale as being associated with oak. I would not be surprised to learn a related species was associated with madrone, but have not found it in my area, where madrone is occasionally found. I have found even 4-8 inch tall seedling Douglas-fir can be associated with Hysterangium, which form thick, tough rhizomorphic mat communities in the soil. Good news is that Hysterangiums can be found year-round, and can often be found at some depth, although it is necessary to break-apart the tough rhizomorphic mats to find them. My record is several hundred pea- to walnut-sized sporocarps found with a single Noble fir in a Christmas tree farm in Clackamas County, Oregon. Infrequently collected, but can be locally abundant.

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

Eye3 = Observer’s choice
Eyes3 = Current consensus


Add Comment
By: BakerSt10
2010-01-15 10:03:21 CST (-0500)

When cut open, no columella prescence, no stubby pseutostem,Blue green interior, hard sponge like feel. no odor, Growing with Manzanita & Oak

By: Irene Andersson (irenea)
2010-01-15 04:56:57 CST (-0500)

The shape and size is right for Chamonixia, but the habitat is not, and it’s not blueing either? Why not Hymenogaster (s.l.) as well?

Created: 2010-01-14 19:18:37 CST (-0500)
Last modified: 2010-01-14 19:18:37 CST (-0500)
Viewed: 89 times, last viewed: 2017-06-06 10:07:42 CDT (-0400)
Show Log