Notes:
Growing on the trunk of an American Beech (Fagus grandifolia) tree on an east-facing slope above a lake.

Perennial.
Growths begin as a cluster of 10-or-so brackets, approximately the size of Trametes versicolor brackets (image not available). ‘Colonies’ gradually grow in the number of almost-horizontal brackets. Mature colonies form a ‘knot’ of overlapping brackets. Mature knots are approximately 3-4 inches wide, and occur as individual knots or knots growing adjacent to others.
Cross-section of knot shows pores; pore depth, up to 3mm.
Pore density: 3-4 pores/mm
In dormant phase, knots are gray with a brownish tone in sunlight and a purplish tone in shade. Brackets are ‘collapsed’ over each other; lobes leathery with a leathery texture and stiff, not particularly flexible.

Fruiting: September-November (in Barrow County, GA)
Fruiting sequence:
Week 1. Brackets begin to fruit by turning gray-white, multi-lobed growth with a discontinuous white pore surface.
Week 2. Brackets turn brown with bright white margins. The tops of brackets have a ‘metallic’ rusty iron-colored surface. Pore surfaces are still white (immature).
Week 3. The white margins of brackets begin to dull. Pore surfaces are turning gray as they mature.
Week 4. The bracket margins continue to darken. Pore surfaces have darkened considerably and are probably mature.
Week 5. The bracket margins are almost completely brown. Color of pore surfaces are unchanged from Week 4.

Note:
Original (2009) photograph of young colony.
Observations of fruiting sequence of knots taken in 2015; observations of pore surfaces for corresponding knots taken in 2016. Date of observation based on date of beginning of fruiting sequence in 2015.

Images

Week 1. Fruiting sequence, knot appearance.
Young knot photographed on same tree in 2009. Brackets are still almost horizontal and ‘separate’
Knot in ‘dormant’ phase
Cross-section of mature knot. Pores up to 3 mm depth.
Week 1. Fruiting sequence, knot appearance of five adjacent knots
Week 1. Fruiting sequence, pore surface white
Week 2. Fruiting sequence, brackets turned brown with bright white margins
Week 2. Fruiting sequence, brackets turned brown with bright white margins
Week 2. Fruiting sequence, brackets turned brown with bright white margins. Tops of brackets have almost ‘metallic’ appearance.
Week 2. Fruiting sequence, pore surface white
Week 3. Fruiting sequence, brackets brown with margins duller than at Week 2.
Week 3. Fruiting sequence, pore surface darkened to gray
Pore density: 3-4/mm
Week 4. Fruiting sequence, brackets brown with margins duller than at Week 3.
Week 4. Fruiting sequence, pore surface dark
Week 3. Fruiting sequence, brackets almost uniformly brown
Week 5. Fruiting sequence, pore surface dark
Clusters of fruiting knots on American Beech (Fagus grandifolia) tree.

Proposed Names

85% (1)
Recognized by sight: Previously Globifomes graveolens.

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Comments

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Globifomes graveolens – Odor
By: Joan Knapp (PucaK)
2017-02-16 13:48:33 CST (-0500)

I have read that they are supposed to have an odor but…
I did check this year at about week 3 and couldn’t detect any odor.
Next year I’ll try to remember to check during week 1.

wow
By: Danny Newman (myxomop)
2017-02-16 10:20:02 CST (-0500)

great observation! my question for every G. graveolens post is always the same. what did it smell like?