The ascocarps are surrounded by a _spongy and incomplete envelope_. One
order, poor in species.
Order =Gymnoascaceæ=.--The ascocarps are borne sometimes
solitarily, or sometimes coiled together. _Gymnoascus reessii_
forms small bodies about 1 mm. in diameter on old horse-dung,
which at first are white and afterwards orange-red.--_Ctenomyces
serratus_ lives on the old feathers in birds’ nests.