ii. Sporangia shorter, capillitium
irregular 5. _C. irregularis_
_b._ Capillitium dense.
i. Sporangia large, to 10 mm., spore-mass black 7. _C. suksdorfii_
ii. Sporangia smaller--6 mm.
O Spore-mass brown, spherical, conoidal, etc., generally with more or less lengthened stipe 8. _C. nigra_
OO Spore-mass violaceous or purplish 9. _C. aequalis_