Family 2. HYPOCREACEAE 
By FRED Jay SHAVER 
Stromata conspicuous, seated directly on the substratum or springing from 
a sclerotium in the bodies of insects, fungi, or the ovaries and stems of plants, 
effuse without definite margin, patellate, substipitate, or erect. Perithecia par- 
tially to entirely immersed in the stroma, rarely subsuperficial (especially in 
aged specimens). Ascicylindric or clavate, 8-16-spored. Spores subglobose 
to filiform, simple or compound, hyaline or colored. 
Stromata seated directly on the substratum, usually patellate or effuse, 
rarely clavate and erect. Tribe 1. HYPOCREEAE. 
Stromata springing from a sclerotium, usually erect and clavate, rarely 
depressed, Tribe 2. CORDYCIPITEAE. 
Tribe 1. HYPOCREEAE. Stromata patellate or effuse, rarely clavate and erect, not springing 
from a sclerotium ; perithecia partially to entirely immersed, papillate, with the necks often pro- 
truding ; asci cylindric or clavate; spores subglobose, ellipsoid, fusiform, or filiform, simple or 
compound, hyaline or colored. 
Asci 16-spored (by the separation of each original spore into 2 subglobose cells). 
Stromata patellate or effuse. 
Spores hyaline. 1. HyPpocrEa. 
Spores becoming ereeuien or brownish. 2. CHROMOCREA. 
Stromata clavate and vertical. 3. PODOSTROMA. 
Asci 8-spored ; spores ellipsoid, fusiform, or filiform. 
Stromata with stilbum-like outgrowths. 4, STILBOCREA. 
Stromata without stitbum-like outgrowths. 
Spores ellipsoid to fusiform. 
Spores simple or doubtfully septate ; stromata fleshy or cottony. 
Spores colored. 5. CHROMOCREOPSIS. 
Spores hyaline. 
Parasitic on leaves; stromata fleshy. 6. POLYSTIGMA. 
Not parasitic on leaves ; stromata qetally cottony. 
Stromata scant; perithecia subsuperficial, 7. BYSSONECTRIA. 
Stromata profuse; perithecia immersed. 8. PECKIELLA, 
Spores 1-septate, fusiform or subfusiform. 
Stromata cottony or subfleshy with ends acute and often apicu- 
late. 9. HYPOMYCES. 
Stromata fleshy ; spores ellipsoid with ends obtuse. 10. HyPocREOPSIS. 
Spores 3-septate. 11. BROOMELLA. 
Spores filiform. 
Perithecia enclosed in a membranaceous wall. 12, OomMyYCcEs. 
Perithecia not enclosed in a membranaceous wall. 
Stromata very scant, cottony, white. 13. BARYA. 
Stromata subfleshy, ‘of variable color. 
Stromata sheathing, on stems of grasses. 14, TyPHODIUM. 
Stromata patellate or subpatellate. 15. HypocRELLa, 
Tribe 2, CoRDYCIPITEAE. Sclerotia formed in the bodies of insects or in the stems or fruit- 
ing organs of plants, consisting of a more or less well-developed, often compact and hard growth 
of mycelial tissue ; stromata developing from the sclerotia usually after a period of rest, erect and 
clavate or rarely pulvinate ; perithecia immersed, or subsuperficial (especially in aged specimens) ; : 
asci cylindric; spores filiform or subfiliform, simple or many-septate, often breaking into numer- 
ous segments, hyaline. 
Sclerotia formed in the bodies of insects or fruiting organs of fungi. 16. CORDYCEPS. 
Sclerotia formed in the tissues of vascular plants. 
Sclerotia originating in the ovaries of plants; stromata long-stipitate. 17. SPERMOEDIA. 
Sclerotia formed in the stems or fruiting axes of plants; stromata short- 
stipitate or sessile. 
1. HYPOCREA Fries, Syst. Orbis Veg. 104. 1825. 
Stromata subglobose to patellate, fleshy or subfieshy, usually with an abrupt margin which 
in older specimens is more or less free, or irregular in outline and effuse without definite 
margin ; perithecia entirely immersed, subglobose or ovoid with the necks slightly protrud- 
VorumE 3, Part 1, 1910] 81 
18. BALANSIA. 
