1921] BLAKESLEE, CARTLEDGE, & WELCH—CUNNINGHAMELLA Iol 
plus, while nos. 4-6, 12, 15, 18, 19, 22-26 were always minus, nos. 
3, 7-11, 13, 14, 16, 17, 20, 21, . .. , however, have reacted with 
both the so-called plus and minus strains.’”’ This is a curious 
conclusion, that nos. 1 and 2 are constantly plus because they 
TABLE I 
REARRANGEMENT OF DATA IN BuRGER’S TABLE I: Cunninghamelia bertholletiae, 
26 RACES (1-26); NUMBER OF COMBINATIONS POSSIBLE, 325; NUMBER OF COM- 
BINATIONS MADE, 135; ABERRANT COMBINATIONS, 6; ‘‘ PSEUDOHETEROTHALLIC 
HERMAPHRODITIC RACES,” 3 TO 8; Z STANDS FOR OCCURRENCE OF ZYGOSPORES, 
H FOR OCCURRENCE OF “IMPERFECT HYBRIDIZATION’? REACTION; PARENTHESES 
INDICATE THAT REACTION IS ABERRANT ON BASIS OF SEXUAL DIMORPHISM 
9 plus t4 plus} 34 7 minus| 3 min 
Races contrasted yao od to plus or i gone IV oe oie a tyne 
minus mete plus] Sora minus | minus 
us or plus and minus 9...|...... oO O O O Z Z Z 
Plus rife fete aban, @ Mel Piha O O O z Zz Z 
Plus or plus and minus 14...| O gel Cl ae 2 O Z Z Z 
Plus or plus and minus 16...|. O O12) O O z if Zz 
us soy Se meas 8 Oo O O O Z on ee 
Plus or plus and minus ~ (Z) O (Z) O oO re fe Z 
Plus fap O O O O Oo v4 O O 
d = oh O O O O O z O O 
fade O O O O 0 0 O L 
eraceplneins minus 3...) Z Z H oO (Z) 2G ia 
inusorplusandminus 7...) Z Z oO oO AS aes oO 
: ae Zz Zi: H O 0 oO O 
Minus 12.47 2 Z H O oO O Oo 
Minusorplusandminus 13...|  Z Z H Oo} (@) 18) O 
Minusorplusandminus 21...|  Z Z H i De ee ee (Z)| (Z) 
us m= Z O O O O oO O 
Minus 5 Z O ) O O O O O 
nus 6 2 O O O O O O Oo 
nus 15 Z O O O O O O O 
nus 18 oO 2 O oO Oo O O O 
nus 10.. O Z O O O O O O 
nus 22... O z O O O 0 O O 
nus Pie ae 8 Z O oO O O O O 
nus 4 O O H O O O O 
nus euch OO O ) H O O O O 
nus 20.612: 0 O O H O O oO O 
minus] 32...| O 0:10 Hi Zz Oo O O 
produced zygospores with a hermaphrodite (no. 21) and with no 
other race; while no. 11 is listed among those which have reacted 
with both the so-called plus and minus strains when it formed 
zygospores only with no. 3, which need not be considered other than 
as a good minus. Burcer further believed that there were twelve 
hermaphrodites, since he lists this number, including no. 11 among 
