I find this unknown (to me) asco in the same location in the Bronx, NYC, during the cold months on Platanus.  This was collected on Platanus × acerifolia on January 6th on a fallen branch.  The ascomata cluster on the bare wood and tend to congregate in the grooves on the surface.  They measure .3 to .5 mm in diameter and can be pyriform when hydrated, collapsing when dry. 

Asci measure 124-161 by 21-27µm.  Bitunicate.  Ascospores are yellow brown, 4-7 septate, some with longitudinal septa. Thick walled.  They tend to be most constricted at the central septation.  At times the cell closest to that septation is enlarged.  Within the asci I have observed ascospores both with and without a gelatinous sheath.  Ascospores measure 32-46 by 9-11.5µm. 

Does anyone know what this could be?  I have consulted Margaret Barr's "Prodromus to Class Loculoascomycetes" without success.  I vaguely considered Trematosphaeria britzelmayriana, which seems to fit microscopically, but the ascomata are submerged in that taxon. 

I have posted this same organism twice on AF before...
11 Feb. 2018:
http://www.ascofrance.com/search_forum/52273
17 Nov. 2017:
http://www.ascofrance.com/search_forum/51237

Any help would be appreciated.
Thanks!