296 
Mycologia 
Achlya De Baryana Humphrey ( Achlya polyandra De Bary) : 
Coker, Mycologia 4: 319. 1912. Figs. 7 and 8, of plate 78, 
show reduced sporangia with spores in a single row, the spores 
emerging exactly as in Dictyuchus. They also frequently sprout 
as in Aplanes. 
Achlya glomerata Coker: Mycologia 4: 325. 1912. In fig. 7, 
plate 79, is shown a sporangium with the spores sprouting as 
in A planes. 
Achlya polyandra Hildebrand: Ward, Quart. Jour. Micr. Sci., 23 : 
272. 1883. In plate 22, fig. 8, is shown a sporangium with the 
spores emerging just as in Dictyuchus. The retention of the 
spores in this case he was able to bring about by poor aeration, 
i. e., placing the culture in on air tight chamber. 
Achlya prolifera (Nees) De Bary: Bot. Zeit. 10 : 473. 1852. In 
plate 7, fig. 28, is shown the sprouting of die spores at the mouth 
of the sporangium, the second swimming stage omitted. In all 
the seven species of Achlya that I have studied the second 
swimming stage may be easily suppressed. 
Achlya racemosa Hildebrand: Pringsheim, Jahrb. fiir Wiss. Bot. 
9 : 191. 1873. In plate 22, figs. 1, 2 and 3, are shown sporangia 
emptying exactly as in Dictyuchus. Under the name of Achlya 
lignicola, which is now regarded as a depauperate condition of 
A. racemosa, Hildebrand figures a sporangium with many of 
the spores remaining undischarged (Jahrb. fiir Wiss. Bot. 6: 
; 249, plate 16, fig. 2. 1867). 
Aphanomyces stellatus De Bary: Sorokin, Ann. Sci. Nat. VI. 3: 
46. 1876. In plate 7, figs. 10 and 18, are shown sporangia dis- 
charging their spores in the exact manner of Dictyuchus. He 
also shows sprouting at the mouth of the sporangium, and 
sporangia with spores in more than one row. See also Hum- 
phrey (Saprolegniaceae of the U. S., p. 79) for omission of 
second swimming stage. 
Aplanes androgynus (Archer) Humphrey {—Aplanes Braunii De 
Bary) : Reinsch, Jahrb. fiir Wiss. Bot. 11 : 283. 1877. 
Under the name of Achlya Braunii, Reinsch states positively 
