When: 2006-06-30

Collection location: Cabin Cove, Haywood Co., North Carolina, USA [Click for map]

Who: Jason Hollinger (jason)

Specimen available

Crust lichen, on hardwood bark.
THALLUS: pale gray, rimose to verruculose, K-, C-, KC-?
MEDULLA: white, K-, C+ red, KC+ bright red turning orange then fading
ALGAE: green
APOTHECIA: lecanorine, adnate but very raised, disk sunken and yellow, becoming very powdery white pruinose almost immediately, hymenium clear
SPORES: 1 per ascus, huge, 200 × 40 µm or more!, walls smooth, 10 µm thick, not textured inside
PARAPHYSES: very thin, colorless, not expanded, much branched

Check out those spores!! Wish I had a photo of the thallus, but still, not every day you see spores fully one quarter of a millimeter long! — literally visible with the naked eye.


Spores in asci, in water, at 400x
Apothecial section, in water, at 100×.

Proposed Names

87% (1)
Used references: Brodo: pruina, chemistry, spore size
Based on microscopic features: 1 spore per ascus, 250 µm long(!)
Based on chemical features: medulla C+ and KC+ red

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

= Observer’s choice
= Current consensus


Add Comment
No one has commented yet.