44 
OHIO BIOLOGICAL SURVEY 
4. LACHNOBOLUS Fries. 
Sporangia closely clustered or heaped, sessile. Sporangium wall single, 
without granular matter. Capillitium an inelastic network of threads, 
closely warted. 
1. L. congestus tSomm.) Lister. Sporangia clustered or heaped, 
subglobose, 0.5 to 1mm. in diam., yellowish, shining. Sporangium wall 
single, not containing granular matter. Capillitium an inelastic network 
of flaccid yellow threads of varying diameter, prominently warted. Spores 
light yellow, warted, 6 to 8mmm. in diam. 
Erie Co. 
FAMILY 12. TRICHIACEAE. 
Sporangia distinct, stalked or sessile. Capillitium consisting of tubu¬ 
lar threads combined into a network or of free threads (elaters) marked 
by spiral bands or thickenings. 
KEY TO THE GENERA OF TRICHIACEAE. 
A. Capillitium united into a network. 
C. Capillitium marked by imperfect spiral thickenings. 
C. Capillitium marked by spiral thickenings. 
A. Capillitium of free unbranched threads. 
B. Elaters with imperfect spiral thikenings. 
B. Elaters with spiral thickenings. 
1. CALONEMA Morgan. 
Calonema aureum Morgan. Plate VIII, Figs. 2, 2a, and 2b. 
Sporangia crowded or heaped, subglobose, sess 
work of slender threads marked by imperfect spiral thickenings or by rings. 
1. C. aureum Morgan. Sporangia crowded or heaped, 0.3 to 0.6mm. 
in diam., yellow, shining, sessile. Sporangium wall membranous, trans¬ 
lucent, with thin spots from which lines radiate in all directions. Capil¬ 
litium consisting of branching yellow threads which form an imperfect net, 
the free ends enlarged, and the threads marked by imperfect spirals and 
complete rings. Spores yellow, reticulated, 13 to 15mmm. in diam. 
Erie Co., (Miami Valley—Morgan), (Ohio—Lister), (Ohio—Macbride.) 
2. HEMITRICHIA Rostafinski. 
Hemitrichia clavata (Pers.) Rost. Plate IX, Figs. 2, 2a, and 2b. 
Hemitrichia serpula (Scop.) Rost. Plate IX, Fig. 3. 
Hemitrichia vesparium (Batsch) Macbride. Plate IX, Figs. 1, and la. 
Sporangia distinct, stalked or sessile. Capillitium a network of 
threads marked by spiral bands. Free ends few or numerous. Spores 
warted or reticulated. 
1. Calonema 
2. Hemitrichia 
3. Oligonema 
4. Trichia 
die. Capillitium a net- 
