Dictyuchus missouriensis Couch 1931

Dictyuchus missouriensis Couch, Jour. Elisha Mitchell
Soc. 46: 227. 1931.
Mycelium fairly vigorous, up to 2 cm. in diameter on hempseed; hyphae up to 75 x thick near base, most about 50-60 li, more or less wavy throughout and zigzag in the distal half by formation of sporangia and renewed growth from beneath; sporangia cylindric, thickest in the middle, 10-40 by 84-400 ll, most 25-35 by 250-300 », the wall thin, disappearing soon after the formation of the spores; spores usually rounding up more or less before encysting within the sporangium, thus forming only an imperfect net, emerging from their cysts and swimming in laterally biciliate form (by special treatment early formed sporangia may be induced to discharge as in Achlya), about 10 ^ thick when encysted; gemmae very rare, spheric to elliptic; oogonia abundant, spheric except for the basal elongation, 29-44 ll in diameter, usually about 33 li, rarely 60 ll, borne on rather thin lateral branches about two to three times as long as the diameter of the oogonium, the stalk usually bent at the base of the oogonium and the oogonium often joined to the stalk by a beak-like process from its base; eggs single, 23-38 /x in diameter, usually about 26 ll eccentric; antheridia lacking.
Type locality: Jefferson Barracks, St. IyOuis, Missouri. Habitat: Soil.
Distribution: Known only from the type locality.