Table of Genera of Physaraceæ.
I. Tubules of the capillitium having the granules of lime in them aggregated into roundish or angular nodules, with intervening empty spaces.
A. Outer surface of the sporangium destitute of lime.
- 1. Angioridium. Plasmodiocarp laterally compressed, splitting regularly into two valves.
- 2. Cienkowskia. Plasmodiocarp terete, elongated, irregularly dehiscent.
- 3. Leocarpus. Sporangia subglobose or obovoid, stipitate or sessile.
B. Outer surface of the sporangium invested with granules of lime.
a. Stipe prolonged within the sporangium as a columella.
- 4. Physarella. Sporangium oblong, stipitate, the apex re-entrant.
- 5. Cytidium. Sporangium globose, stipitate, the apex convex.
b. Stipe never entering the sporangium.
- 6. Craterium. Sporangium obovoid to cylindric, stipitate.
- 7. Physarum. Sporangium globose, depressed globose or irregular, stipitate or sessile.
- 8. Fuligo. Aethalium a compound plasmodiocarp.
II. Tubules of the capillitium with the granules of lime in them distributed throughout their entire length.