382 THE AMERICAN NATURALIST. [Vor. XXXIV. 
had increased, and the creek had deepened its channel, leaving 
the flag clumps high and dry. The flowers were destroyed by 
Chaetopsis, setting no seed at all. 
Thus, only the five first-named localities were available for 
the following tabulation. ` 
TABLE II. — COMPILATION OF DATA’ ON IRIS FRUITING. 
CAPSULES FERTILE. | By CLUSTERS. 
3 & s s S E "n $ jo A 
5 From |No. E Ei $ ysis * is Li FE E 
5 «| E 1a) Ele] EIF EENE S SE E 
" i t EIN § Sigs] E WS 
à, x À A ee a 
loc. 1 | 14|| 10 9 9 28 66%, o| 8| 57%| 7| 50% 
" 3 10291. 65 81 36 212| 57%] | 74| 59%| 34| 27% 
: * 4 | 29| 18 20 8 46 63% o| 13| 52% 16% 
« 4 | gl 21 18 6 45| 63%| 1| 16| 64%| 6| 25% 
“es oot I 7 2 26 35% o| 7| 28%| 1| 4% 
Total |214||t6r| 75%|135| 63%| 61| 28%|357| 56%| 1|118| 55%| 51| 24% 
loc. 1 | 10| 7 4 II| 55%| o| 4| 40% 
* 2 |75| 56 39 95| 63%| 2| 38| 50% 
IH “ 3 |15| 10 7 17| 57%| 4| 6| 40% 
“ 4/13) 8 5 13| 50%| 3| 4| 34% 
UE ER 3| ro% 12| 0 
Total |128| 84| 66%) 55, 43% 139| 5470, 21| 52| 41% 
lo.1 | 7| 5 6 11| 79%| o| 5| 71% 
* 32 1347 8 4 12| s0% o| 3| 25% 
Tow. IRSE 1 21100 j| o| 1/100% 
III 
uir 1| 1 I 2|100% | o| 1/100% 
“ 5 I o [e] I [e] : 
Total | 22]| 15| 68%| 12| 54% 27| 61%| 1| 10| 45% " 
IV A single example from loc. 1, both capsules fertile. 
This study by localities shows that the flags which grow in 
shallow water with open exposure to the sun have the better of 
it. Doubtless this but indicates their natural habitat. 
The inference previously drawn from this table, that the 
earlier flowers have the advantage, is strikingly corroborated 
