Observation 176022: Strobiloscypha cupressina

When: 2014-08-28

Collection location: Cave Creek Rd., Cochise Co., Arizona, USA [Click for map]

31.8834° -109.1787° 1581m

Who: Bob Chapman (Disciseda)

Specimen available

Notes:
on cones of Juniperus depeanna, riparian area

Proposed Names

6% (2)
Eye3
Recognized by sight
-70% (2)
Recognized by sight
-23% (3)
Recognized by sight
-57% (1)
Recognized by sight
-57% (1)
Recognized by sight
-32% (3)
Recognized by sight
93% (3)
Eyes3
Recognized by sight
Used references: Peric B., LoBuglio K. & Pfister D.H. 2014. The genus Strobiloscypha: a new species and an unresolved phylogenetic placement. Mycol. Monten., 16: 7-22.
Based on microscopic features: Material revised

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

Eye3 = Observer’s choice
Eyes3 = Current consensus

Comments

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And settled it’s been.
By: Danny Newman (myxomop)
2015-06-14 01:13:17 PDT (-0700)

Thanks, NicoV.

Revision of material
By: Nicolas VAN VOOREN (NicoV)
2015-06-11 11:27:19 PDT (-0700)

I revised the herbarium material kindly sent by Bob. This collection fits well with Strobiloscypha cupressina. Here are some details on microscopic characters: Ascospores 16-18 × 10-11.5 (12) µm, Q=1.5, smooth, not really guttulate but with small polar inclusions. Excipulum two-layered: medullary excipulum of textura intricata, with hyaline hyphae; ectal excipulum of textura angularis, mixed with some elongated cells, thick-walled (up to 1 µm) and partially incrusted by a dark brown pigment (this gives the warted outer surface of apothecia). Hairs present, superficial, light colored, septate, 135-200 × 5-6 µm, with a simple base; some hairs can show colored amorphous matter on their wall.
Strobiloscypha keliae has larger spores (20-23.7 × 12.5-13.5 µm) and they are finely warted (after Weber & Denison, 1995).

Let’s get this settled
By: Bob Chapman (Disciseda)
2015-05-19 17:36:45 PDT (-0700)

Will be in Las Cruces, NM where I keep my collections, in a week or so. Send me your addresses and I’ll send you some of the collection.

Options
By: Nicolas VAN VOOREN (NicoV)
2015-05-18 22:09:51 PDT (-0700)

Thanks Danny.
In this case, the solution is easy to find because there exists a sample. So if Bob is interested in the determination, I can study a part of his collection. Just contact me.

Thank you, Nico
By: Danny Newman (myxomop)
2015-05-18 18:18:21 PDT (-0700)

I see this as a prime example of general, macroscopic aspect/gestalt having little to no bearing on identity. there has been a strong tendency on MO to name ascomycetes on their likeness to a given species (or an image claiming to be of a given species). I am glad to see some of that mess begin to be sorted out by way of your very valuable contributions.

Options
By: Nicolas VAN VOOREN (NicoV)
2015-05-17 14:48:54 PDT (-0700)

this looks like a Strobiloscypha species. I know S. cupressina, a species collected on rotten litter of Cupressus. S. keliae is an American species, but I don’t know it.
Trichophaea flavobrunnea has been collected on Juniperus (and also Cupressus) leaves, but apothecia are more hairy. A simple check of microscopic characters should help to make a choice.

Created: 2014-09-02 10:11:18 PDT (-0700)
Last modified: 2015-06-11 13:06:45 PDT (-0700)
Viewed: 239 times, last viewed: 2017-12-08 16:10:09 PST (-0800)
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