THE STRUCTURE OF CERTAIN NEW HYBRIDS, 155 
PISTIL. 
_ The styles of B. are } in. long, chalky white, with a reddish tinge and 
a few faint pink spots at the base. The stigmata are of a pale cream or 
grey colour. 
In C. the styles are ? in. long; the ground colour very light greyish 
or purplish green, dotted throughout with comparatively large reddish- 
purple spots. The stigmata are dull greenish-drab. 
In M.W. the styles are 5 in. long, with deep purple spots on a light 
purple ground; the stigmata purplish-drab. The ovary is elliptical, 
2 in. long, and fairly intermediate in character between that of B. and 
of C. 
Potency oF PoLLEN or P. BUONAPARTEA. 
There is good reason to believe, from the results of a few experiments 
carried out several years ago, that the flowers of P. Buonapartea can be 
fertilised by their own pollen; and evidence is not wanting that one 
flower can be fertilised by the pollen of another.* Its potency has 
been further made manifest, the flowers of the species P. alba having 
been fertilised by it (p. 159). Moreover, experiments in progress point 
to its being as potent as that of P. quadrangularis and P. alata in 
fertilismg (imperfectly) its own hybrid offspring, P. alba x P. Buona- 
partea (p. 163). 
SEEDLINGS OF P. BuONAPARTEA. 
On one occasion, as the result of accidental fertilisation, a fruit 
was borne on my plant of P. Buonapartea. The fruit was oval, measur- 
ing 43 in. long and 24 in. broad. Only thirty-four of the very numerous 
seeds seemed good. ‘Twelve of the best were sown, and seven of them 
germinated. Some of the seedlings were much more vigorous than 
others, and very considerable diversity existed amongst them in leaf 
form. One, at least, had distinctly narrower leaves. No opportunity, 
however, was afforded of studying and comparing them in vigorous 
development. Little more, therefore, could be gathered than that there 
seemed to be a marked tendency in certain of the seedlings to produce 
leaves of a form which perhaps was ancestral. 
EXPERIMENTS IN CROSS-FERTILISATION.T 
Many attempts have been made to fertilise the flowers of M.W. with 
the pollen of other Passion-flowers. The following is an enumeration of 
the resulting failures and partial successes :— 
Passion-flowers supplying pollen Failure | Partial success 
P. alata 8 0 
P. alba 13 0 
P. Buonapartea . 5 0 
P. cerula . ; 4 12 
P. Constance Elhot 12 5) 
P. Decaisneana . 1 0 
P. edulis ila 0 
P. quadrangularis 2 0 
P. suberosa : 2 0 
Tacsonia Van Volxemi i132" 0 
* Gardeners’ Chronicle, vol. xxiy. 1885, p. 181. 
+ Cf. Darwin, Animals and Plants under Domestication, vol. ii. p. 137. 
