Jan., 1908.] Variation in Syndesmon and Hepatica. 
43i 
VARIATION IN SYNDESMON AND HEPATICA. 
Roswell H. Johnson. 
Prof. Kellerman, in the Ohio Naturalist for May, 1901, 
published an article on Variation in Syndesmon thalictroides 
(L) Hoffrug, based upon material from six Ohio localities, and 
at the time he called for additional notes from other places. I, 
therefore, venture to send to you the observations I have made 
upon this species in four other states compared with his, together 
with a similar study of Hepatica. 
RUE ANEMONE, SYNDESMON THALICTROIDES. 
From a study of the tables I-VII we may reach the following 
conclusions. 
TABLE I—NUMBER OF FLOWERS PER STEM. 
Locality and Date. 
N 
1 
2 
3 
4 
5 
6 
7 
8 
9 
10 
Av. 
Natick, Mass., May 6, '99. 
75 
70 
5 
3.06 
A Stony Brook, (RR) Mass. 
, May 7,'99 
83 
53 
25 
5 
3.41 
B “ “ Mass. 
Mav 7,’99 
13 
13 
3.00 
E Yonkers, N. Y., Apr. 20 
'99. 
46 
0 
0 
31 
15 
0 
0 
0 
3.32 
A Yonkers, N. Y., Apr. 21 
Alpine, N. J., Apr. 23, ’99. 
'99. 
38 
0 
1 
28 
9 
0 
0 
0 
3.21 
13 
0 
0 
10 
3 
0 
0 
0 
3.23 
Toledo, Ohio. 
30 
1 
0 
13 
15 
1 
3.50 
Steubenville, Ohio. 
17 
0 
0 
7 
8 
2 
3.70 
W. Mansfield, Ohio. 
11 
1 
1 
3 
6 
0 
3.27 
Rendville, Ohio. 
12 
0 
0 
9 
2 
1 
3.33 
Columbus, Ohio. 
12 
1 
0 
2 
8 
1 
3.67 
St. Marvs, Ohio . 
18 
0 
0 
16 
2 
0 
3.11 
A Riverside, Ill., May 12, 
00. 
11 
0 
0 
4 
7 
0 
0 
0 
3.64 
B Riverside, 111., May 12, 
00. 
66 
0 
0 
43 
20 
1 
0 
1 
0 
0 
1 
3.49 
Glencoe, Ill.. May 5. '00.. . 
65 
0 
0 
52 
12 
1 
0 
0 
3.20 
A Madison, Wis., May 2, 
02 . 
93 
8 
7 
59 
14 
5 
0 
0 
3.00 
A “ “ May 12. 
'02. 
110 
40 
19 
38 
12 
1 
0 
0 
2.23 
B “ “ May 25, 
'02 . 
41 
11 
6 
13 
7 
4 
0 
0 
2.67 
B “ “ June 10, 
'02 . 
7 
1 
4 
1 
i 
0 
0 
0 
2.27 
C “ “ May 25, 
’02 . 
74 
4 
6 
25 
29 
8 
1 
1 
3.51 
C “ “ June 10, 
'02. 
73 
6 
6 
22 
28 
8 
3 
0 
3.45 
Total. 
908 
73 
50 
512 
228 
38 
4 
2 
0 
0 
1 
3.15 
1. The typical number of flowers is three—a terminal one 
and two lateral ones each in the axil of one of the involucrate 
leaves. One of these lateral flowers may be missing, but in case 
of reduction, both are more likely to disappear. Additional 
flowers may appear, generally as additional axillary flow r ers to 
the involucre, but in some cases, especially where there are 
many, in the axils of additional leaves above or below the 
involucre. 
2. All the characteristics studied vary from place to place as 
determined, but since it also varies greatly from one grove to 
another in the same vicinity and from time to time, the amount 
of the variation which is truly geographical is difficult to 
determine. 
