Observation 170719: Pterospora andromedea Nutt.

These mycoheterotrophic plants were growing under mixed conifers. They seem to be associated with the pine in the last photo.

Proposed Names

29% (1)
Recognized by sight
83% (1)
Recognized by sight: Also called “pine drops.” Usually find these when they’re old and fully mature(boring and brown at that point). Your picture is one of the sharpest I’ve seen for this species of mycoheterotroph. Think they’re associated with various Russula sp.

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Eye3 = Observer’s choice
Eyes3 = Current consensus


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associate is Rhizopogon, not Russula
By: Joe Cohen (Joseph D. Cohen)
2014-07-21 05:58:19 CEST (+0200)

MO taxon Names sometimes have useful Descriptions, so it’s often worth a click to check it out.

The Pterospora andromedea description says that the associates are Rhizopogon salebrosus and Rhizopogon arctostaphyli. See the Description and the Bidartondo and Bruns article linked from the Description.

Rhizopogon in turn associates mostly with Pine (which explains Dan’s Note). See, e.g., MO Public Description for Rhizopogon salebrosus; Grubisha LC, Trappe JM, Molina R, Spatafora JW, “Biology of the ectomycorrhizal genus Rhizopogon. VI. Re-examination of infrageneric relationships inferred from phylogenetic analyses of ITS sequences”, Mycologia 94(4):607-19 (2002).

Created: 2014-07-21 03:21:40 CEST (+0200)
Last modified: 2014-07-21 03:51:34 CEST (+0200)
Viewed: 36 times, last viewed: 2017-06-18 18:35:18 CEST (+0200)
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