Botany and Zoology. 28h 
the long-styled: We shall immediately see that this is the case ina slight 
degree. But I suspect that in this instance oie difference in fertility Mf Pontes 
the two forms was in part due to a distinct cause. I repeatedly watched the 
flowers, and ed once saw a humble-bee momenta ily alight on one, and then 
were not to its taste. I ad visited the several plants, 
there cannot ss a doubt that the four hingeatiied plants — did not produce 
a single capsule would have borne an abundance. But several times I saw 
amall Diptera sucking the flowers; and these —— thou ugh not visi o the 
small quantity of pollen when sana ‘by small insects. 
greater num ‘Gales of long-styled than of short-styled flowers in the nila 
evidently the short-styled would be more likely to receive pear pollen from 
the cere eled.s wg long-styled from the short-style 
1862, thirty-four plants of this Linwm in a ‘hotbed; and these 
pane of heleeeidets long-styled and seventeen short-styled fo 
sown later in the flow wer-garden yielded seventeen long-styled and twelve 
short-styled forms. These facts justify the statement that the two forms are 
produced in about equal mic The first thirty-four plants were kept un- 
net which excluded —_ I fertilized heteromorica ally fourteen 
¥ goo : 
ible production for a .caple a that 6 sae climate cannot be very favor- 
phically the racwe * sccoes sanely a hundred flowers (but did not sepa- 
mark them) with their own pollen, but taken from sopkinss mR Sry so as 
to prevent any poss ssible ill effects from saa interbreeding; and many other 
flowers were produced, which, as before poten a get plenty of their own 
individual pollen; yet from all these flowers, borne by the seventeen long- 
ea great mistake in Sostsiig ch the two forms under the same ne witli i 
branches often interlocking ; and it is surprising that a greater number of 
Of the sho led flowers, I fertilized heteromorphically twelve with the 
pollen of the long-styled (and to make sure of the result I Eeyore castrated 
the majori ined seven fine seed-capsules. These included an aver- 
At three 
arate times, I fertilized homomorphically nearly.a hundred flowers with 
their own-form pollen, taken from separate plants; and numerous other flowers 
Were produced, many of which must have received their own pollen. From 
- these flow wers borne on the seventeen plants, only fifteen capsules were 
As oD. plants, some 
of these capsules were perhaps the product of a little pollen Saidanely 
fallen from the flowers of ae oe form. Nevertheless, a nyce pa yled ena 
: s ni 
Ir own : 
x gig pa nap lpi the real proportional excess in 
fertility ia p is probably a le greater, a8 ST igs ean flow i when not dis- 
turbed, do -sty] The 
greater — self-f “fortility of the aes styled flowers was, as ag. seen, also 
Am. Jour. Sc.—Szconp Serres, Vor. XXXVI, No. lawtaes, 1863, 
36 
