Observation 182214: Marasmius subsect. Haematocephali
When: 2014-01-21

Notes: solitary habit

Habitat: humid rainforest, 1062m-1150m

Substrate: on leaves of Mammea or Garcinia

Collectors: D. Newman, J. Shay, E. Randrianjohany, R. Letsara, P. Rasabo

Collection #: JES142

More notes, microscopy and molecular data forthcoming

Species Lists

Images

549014
Canon EOS REBEL T3i + EF-S 60mm f/2.8 Macro
1/6 sec, f/5.6, ISO 100
Focus Stacked with Zerene Stacker (3 Images)
Color Corrected w/ X-Rite ColorChecker Passport
549015
Canon EOS 6D + MP-E 65mm f/2.8 1-5x
2.0 sec, f/16, ISO 100
Focus Stacked with Zerene Stacker (2 Images)
Color Corrected w/ X-Rite ColorChecker Passport
549016
Canon EOS REBEL T3i + EF-S 60mm f/2.8 Macro + OttLite 515003 Rechargeable Task Lamp
0.5 sec, f/11, ISO 100
Color Corrected w/ X-Rite ColorChecker Passport
549017
Canon EOS REBEL T3i + EF-S 60mm f/2.8 Macro + OttLite 515003 Rechargeable Task Lamp
0.4 sec, f/11, ISO 100
Color Corrected w/ X-Rite ColorChecker Passport

Proposed Names

87% (1)
Eye3 Eyes3
Recognized by sight
Used references: Shay, J. E. “Biodiversity and Phylogeny of Marasmius from Madagascar.” SFSU Masters Thesis. 2016.
Based on microscopic features
Based on chemical features

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

Eye3 = Observer’s choice
Eyes3 = Current consensus

Comments

Add Comment
new doubts
By: Danny Newman (myxomop)
2016-10-16 10:56:12 PDT (-0700)

at a recent presentation on cryptic species and species complexes within Marasmius I took special notice of the following two slides:


The presentation was given by Dr. Jadson Oliveira, post-doctoral fellow at the Royal Ontario Museum in Toronto, as part of the 8th Brazilian Mycological Congress in Florianopolis, Brazil.

The slides demonstrate how color, unsurprisingly, plays little to no part in relatedness between these “blood-headed” Marasmiae. With this information in mind, I find it difficult to call any reddish-purple Marasmius as belonging to M. haematocephalus s.s., Marasmius haematocephalus group, or Marasmius sect. Sicci ser. Haematocephali without microscopic and, ideally, molecular confirmation.

This observation is a good example of this very sort of Marasmius cryptic-ness at work. To quote from Jackie Shay’s recently completed master’s thesis:

Specimen JES 142 shows some differences with the other Madagascar specimens in forming slightly longer basidiospores with mean 20.8 × 4.1 µm, faintly reddish purple lamellar edges near the pileus margin, and an ITS sequence that is only 94% similar to the four specimens cited above. In the ITS phylogeny, it is basal to the other M. haematocephalus specimens. JES 142 consists of only a single basidiome with reddish purple pileus, and until additional material becomes available, it is accepted as belonging to the M. haematocephalus complex.

Thanks, Judy.
By: Danny Newman (myxomop)
2015-07-14 23:54:26 PDT (-0700)

This was the most popular print ordered from the Kickstarter.

https://www.kickstarter.com/...

Beautiful shot, Danny.
By: Judi T. (AvidAmateur)
2015-07-14 07:15:50 PDT (-0700)
primoridium of the same
By: Danny Newman (myxomop)
2015-07-13 20:38:50 PDT (-0700)
Nice one, Danny.
By: Dave W (Dave W)
2015-07-13 20:00:24 PDT (-0700)

I wonder what is that tiny orange-capped one? Zoom required.

Created: 2014-10-10 21:13:10 PDT (-0700)
Last modified: 2016-06-20 19:40:53 PDT (-0700)
Viewed: 93 times, last viewed: 2016-11-20 19:00:12 PST (-0800)
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