d, but sometimes
nearly smooth 3. _S. fusca_

2. Spores reticulate and spinulose.

i. Spores adherent, clustered 4. _S. uvifera_

ii. Sporangia very tall, 15-20 mm.,
rigid 5. _S. dictyospora_

iii. Sporangia short, jet- or
violet-black 6. _S. nigrescens_

_b._ Spore-mass rich brown.

1. Columella central.

i. Sporangia shorter, 5-6 mm., spores
banded 7. _S. virginiensis_

ii. Sporangia 8-10 mm.; spores
verruculose 8. _S. webberi_

iii. Sporangia tall, 15-20 mm. or more 9. _S. splendens_

2. Columella eccentric, sporangium in
cross-section, angular 10. _S. fenestrata_

_c._ Spore-mass ferruginous; sporangia in
tufts.

1. Spores smooth or nearly so.

i. Sporangia pale, small, 3-5 mm.,
crowded, stipe unpolished 11. _S. smithii_

ii. Sporangia ferruginous; columella
regular 12. _S. axifera_

iii. Sporangia ferruginous; columella
proliferate just below the apex 13. _S. flavogenita_

iv. Sporangia, spore-mass,
dusky-purplish or brown.

O On dead wood.

o Scattered, apex blunt 14. _S. pallida_

oo Clustered, acuminate 15. _S. carolinensis_

OO On living leaves, preferably,
spore-mass brown 16. _S. herbatica_

1. STEMONITIS CONFLUENS _Cooke & Ellis._

PLATE XI., Figs. 4, 4 _a_, 5.

1876. _Stemonitis confluens_ Cke. & Ell., _Grev._, V., p. 51.
1894. _Stemonitis splendens var. confluens_ Lister, _Mycet._, p. 112.
1899. _Stemonitis confluens_ Cke. & Ell., Macbr., _N. A. S._, p. 114.
1911. _Stemonitis confluens_ Cke. & Ellis, List., _Mycet., 2nd ed._,
p. 147.

"Sporangia fasciculate, confluent on a persistent hypothallus, dark
fuscous; peridia very fugacious; stipes united at the base, erect,
furcate; spores large, brown, globose. On oak bark.

"The stems are branched in a furcate manner and confluent at the base,
fo