THE STRUCTURE OF CERTAIN NEW HYBRIDS. 165 
It is not a little surprising to find so great a measure of success as 
is set forth in the above table. The most noteworthy results were 
secured by the use of pollen of P. alata. The ten fruits swelled rapidly, 
several attaining the length of 14 in. within six days, and 2% in. within 
thirteen days. The smallest fruit collapsed on the fourteenth day, when 
1% in. long. It contained three seeds, arrested in process of development. 
The next in point of size, 2} in. long, failed on the nineteenth day. The 
remaining fruits are larger, and give promise of yielding better seed. 
The two largest measure respectively, at the moment of writing, 22 in. 
and 2% in. in length. Externally they present unmistakable blending of 
the characters of the fruits of the parents, P. alba and P. Buonapartea. 
The internal structure, seen in the examples which have swelled to some 
size before falling, also bears this out, the characters of P. alba being 
perhaps rather the more evident.* 
The two fruits resulting from pollination by P. quadrangularis 
reached the length of 2 in. before falling. They contained a few seeds 
which had developed a little. 
The fruits due to fertilisation by pollen of P. Buonapartea are still 
young. The failure recorded may well have been due to the pollen 
having been kept four or five days.T 
The partial success by pollen of P. Decaisneana (P. alata x 
P. quadrangularis) was represented by a fruit which fell when } in. 
long. 
Of the three fruits due to fertilisation by P. alba, the largest 
measured 23 in. long, and contained when it fell, four weeks old, the 
remains of seven poorly developed seeds. The second fruit was 2 in. 
in length when it fell, and the third fell early. 
The largest fruit resulting from the application of the pollen of 
P. cerulea measured 2} in. in length, and contained four half-developed 
seeds. The best example obtained, by pollen of P. Constance Elliot, 
reached a very considerable size, being 22? in. in length, and well 
formed. It was, however, quite empty. Another, 2 in. in length, 
contained four young seeds. 
=) 
PASSIFLORA ALBA x P. EDULIS. 
This hybrid was secured by an experiment carried out on Sep- 
tember 1, 1898. The fully ripe fruit fell when lightly touched, on 
February 4, 1899, after having hung for a considerable time during the 
winter without showing signs of complete ripeness. It bore all the 
characters of a well-developed fruit of P. alba fertilised by its own 
pollen. It was 22 in. long, and contained 238 seeds, which were 
* Opportunity has been afforded of making a few further observations on the 
fruits resulting from fertilisation by P. alata. Three of these were found hanging 
fourteen weeks after pollination. They presented a deceptively fresh appearance, 
being green and only slightly shrivelled. The largest measured 3 in. in length. 
When opened they were all found to contain nothing except flat, dry, brownish rudi- 
ments of seeds, borne for the most part in the apical half of the ovary. The total 
numbers of these in the fruits were respectively seventy-four, sixty-three, and fifty-one. 
+ A fruit of this series was also found to have hung fourteen weeks in a fairly 
fresh state. It measured 3 in. in length, and contained twenty-four rudimentary 
seeds. No good seed has been produced in any of the fruits borne by P. St. Rule. 
