5°6 
Harris. — On a Chemical Peculiarity of the 
The morphological and physiological dimorphism is, from the evidences 
at hand, as clear a case of specialization of parts to facilitate pollination as 
many others which have been described in the vast literature of floral 
ecology. The central yellow mass of anthers of the nectarless flowers 
furnishes the booty to the visiting insects, in a form which does not require 
moistening (or as much moistening, as in the case of the pollen of many 
other flowers) in massing for transportation. The outer whorl of anthers 
which are inconspicuous, because isochromatic with the corolla, furnish the 
dry powdery pollen for fertilization. Unfortunately for the theory of 
adaptation, the pollen from both types of anthers will, according to Muller, 
produce seed. Personally, I feel that this and other interesting problems 
concerning the anther morphology and physiology of this species must 
await studies in its natural environment. 
Cold Spring Harbour, N.Y., 
Jan. 26, 1914. 
Table A. 
Hour. 
Weight. 
Red Anthers. 
Loss. 
% Loss. 
Hour. 
Yellow Anthers. 
Weight. Loss. 
% Loss. 
8.40 
A a M. 
0*0300 
— 
— 
8.40 A.M. 
0-0471 
— 
— 
8-55 
9 7 
0-0285 
0-0015 
5 ’ 00 
8,50 „ 
0-0460 
O-OOI I 
2'33 
9-°5 
77 
0-0273 
0-0012 
4-00 
9-05 » 
0-0450 
o-coio 
2-12 
9* I 5 
79 
0-0264 
0-0009 
3-00 
9.20 „ 
0-0434 
0-0016 
3*39 
9- 2 5 
0-0256 
0-0008 
2-66 
9.30 „ 
0-0425 
0-0009 
1-91 
9*35 
79 
0-0248 
0-0008 
2-66 
9.40 „ 
0-0415 
o-ooio 
2-II 
9-45 
99 
0-0243 
0-0005 
i -66 
9-50 » 
0-0405 
0-0010 
2 " 1 1 
9-55 
99 
0-0232 
o-ooi 1 
3 -66 
10.0 „ 
0-0402 
0-0003 
0-63 
10.05 
79 
0-0227 
0-0005 
i-66 
10. 10 „ 
0-0392 
o-ooio 
2-1 I 
10.15 
97 
0-0219 
0-0008 
2-66 
10.20 ,, 
0-0383 
0-0009 
1*91 
10.25 
99 
0-0214 
0-0005 
i-66 
10.30 „ 
0-0376 
0-0007 
1-48 
10.35 
99 
0-0209 
0-0005 
i-66 
IO.4O ,, 
0-0368 
0-0008 
1-69 
10.45 
99 
0-0203 
0-0006 
2-00 
IO.5O „ 
0-0362 
0-0006 
1*27 
10.55 
99 
0-0196 
0-0007 
2-33 
11.0 „ 
0-0355 
0-0007 
1-48 
n.25 
9 7 
0-0184 
0-0012 
4-00 
11.20 ,, 
0-0346 
0-0009 
1-91 
rI «55 
7 7 
0-0171 
0-0013 
4*33 
II.50 „ 
0-0328 
0-0018 
3-82 
Table B. 
Hour. 
Weight. 
Red Anthers. 
Loss. 
% Loss. 
Hour. 
Yellow Anthers. 
Weight. Loss. 
% Loss. 
9.15 A.M. 
0-0396 
— 
— 
9.20 A.M. 
0-0282 
— 
— 
9-45 » 
0-0352 
0-0044 
ii*ii 
9-50 » 
0-0269 
0-0013 
4-61 
10.15 „ 
0-0320 
0-0032 
8-o8 
10.20 ,, 
0-0258 
o-ooi I 
3*90 
10.45 >7 
0-0298 
0-002 2 
5*55 
10.50 „ 
0-0250 
0-0008 
2-83 
11-15 n 
0-0277 
0-0021 
5*30 
11.20 „ 
0-0240 
o-ooio 
3*54 
n-45 „ 
0-0254 
0-0023 
5-80 
n .50 „ 
0-0233 
0-0007 
2-48 
I.I5 P.M. 
0-0214 
0-0040 
io-io 
1.20 P.M. 
0-0209 
0-0024 
8-51 
1-45 7 , 
0-0204 
o-ooio 
2-52 
1.50 „ 
0-0206 
0-0003 
1*06 
2.15 
0-0194 
0-0010 
2-52 
2.20 „ 
0-0200 
0-0006 
2-12 
2-45 „ 
0-0180 
0-0014 
3*53 
2.50 „ 
0-0194 
0-0006 
2-12 
3-15 » 
0-0177 
0-0003 
0-75 
3-20 „ 
0-0189 
0-0005 
i*77 
3-45 „ 
0-0172 
0-0005 
1-26 
3-50 „ 
0-0183 
0-0006 
2-12 
4-i5 „ 
0*0164 
0-0008 
2-02 
4.20 „ 
o-oiSo 
0-0003 
1-06 
4-45 »» 
0-0160 
0-0004 
I-OI 
4.5O „ 
0-0176 
0-0004 
1-41 
