Observation 313434: Septobasidium Pat.

Notes:
Substrate/Host: on living branches of a standing hardwood tree (unk.)
Habitat: mixed hardwood forest
Ecoregion: Southern Metasedimentary Mountains (66g)
Collector(s): D. Newman & J. Kalichman
Collection_#: DSN313434
Comments: This fungus was prolific in this area beside the stream but seen nowhere else. All present decided it had the look and texture of Frosted Brown Sugar Cinnamon Pop-Tarts. It was fortuitous to have found an actual Septobasidium to help clarify the identity of this quite different Tennessee fungus, which while once suspected of being the same, is something in the Hypoxylaceae. The genus is an unmistakable one once found and handled in-person. The upper, fertile surface is incredibly smooth and rather cool to the touch. It is the “ceiling” of a structure which houses (and occasionally eats) the scale insects sucking away at the tree underneath. In between are “pillars” of ropy tendrils which keep the fertile surface elevated. The space between makes for a kind of firm-pillowy consistency when pressed. The alternatingly sheltered/devoured insects should have been easier to locate, but I’m not convinced I saw any anytime from the field to the dissecting scope. The collection was split in three, with culturing and sequencing performed in Gainesville on a trip to the Smith Lab. Special thanks to Rosanne Healy and Sarah Prentice for all their kind help with this striking collection.

Images

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Samsung Galaxy Note 4 + BelOMO 10x Loupe
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Samsung Galaxy Note 4 + Dissecting Scope
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Proposed Names

87% (1)
Recognized by sight
58% (1)
Used references: Westcott’s Plant Disease Handbook (link)
Based on chemical features: ITS

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= Observer’s choice
= Current consensus

Comments

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You’re welcome!
By: Sarah Prentice
2018-06-17 16:00:03 PDT (-0700)

This was so fun under the dissecting scope. Bummer we weren’t able to culture it.

Created: 2018-03-30 14:35:49 PDT (-0700)
Last modified: 2018-06-18 09:41:28 PDT (-0700)
Viewed: 74 times, last viewed: 2020-06-27 19:40:22 PDT (-0700)
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