298 
Mycologia 
mitus are arranged in a row in the spore cases, and that ‘no 
active gonidia seem to occur.’ ” 
Monoblepharis macranda Woronin: Memoirs de l’Acad. Imp. des 
Sciences de St. Petersbourg. Cl. Phys. Natl. 8th series 16 : I. 
1904. In this species some or all of the spores may be retained 
in the sporangium and sprout there. Normally the zoospores 
on emerging show amoeboid movements. 
Saprolegnia asterophora De Barv: Jahrb. fiir Wiss. Bot. 2: 169. 
i860. In plate 20, fig. 25, is shown a partly emptied sporan- 
gium, the remaining spores sprouting into tubes. 
Saprolegnia ferax (Gruith.) Thuret: Ann. Sci. Nat. III. 14: 214. 
1850. In plate 22, fig. 8, Thuret shows an unopened sporan- 
gium with the spores sprouting in position. This is a good 
example of the A planes method. 
In the case of a parasite on fish, that he considers Saprolegnia 
ferax, Smith gives a figure showing spores sprouting inside the 
sporangium at one end while others are swimming out at the 
other. Such a combination is probably fanciful (Grevillea 6: 152. 
1878. The same in Gardener’s Chronicle, 4th of May, 1878). 
In this same species Pringsheim (Jahrb. fiir Wiss. Bot. 9: 191. 
1874) gives an interesting case (fig. 12, plate 21) of the contents 
of an egg turning immediately into a sporangium, the spores being 
retained and sprouting in position. In figs, ia, b, c, plate 20, he 
shows spores that had been retained in a partly discharged sporan- 
gium. These had sprouted in position to short tubes which be- 
came sporangia and discharged small spores. 13 
Saprolegnia monoica Pringsheim : Huxley, Quart. Jour. Micr. Sci. 
22: 311. 1882. He describes the regular occurrence towards 
the end of active growth of sporangia of the Apiaries type. He 
calls them, improperly, “ dictiosporangia.” In this plant, which 
was a parasite on salmon, it is noteworthy that Huxley found 
no motion in the spores but only a passive drifting about when 
discharged. In a similar (probably the same) plant, found as 
a parasite on fish, Anger (Ann. Sci. Nat. III. 2 : 5. 1844) 
13 The assertion by Gerard (Proc. Soc. Nat. Hist. Poughkeepsie, Decem- 
ber 18, 1878, p. 25) of the occasional retention of the spores in Saprolegnia 
ferax is probably not based on any original observation. 
