428 DR. J. C. COSTERUS ON MALFORMATIONS 
tube; on these differences Decaisne and Naudin based their divi- 
sion of American Fuchsias into bréviflores and longiflores. 
That (Enothera possesses a calyx-tube can no more be an 
objection to the hypothesis, than its having a row of antipetalous 
stamens. Itis quite possible and even probable that (Znothera 
has gone through a similar development as Fuchsia has done. 
3. The apetalous Fuchsias of South America and New Zealand 
have departed further from the origin than the species with 
petals have done. 
4. In connection with the diagrams and floral formule given by 
Eichler for the principal genera, it would hardly seem hazardous 
to set up the following scheme of the phylogenetie development 
of the Onagrariacex (see opposite). Being unacquainted with the 
occurrence of the tube in this family, we have left it unnoticed 
in this rough draught of a pedigree. 
APPENDIX. 
After having drawn up the foregoing paper, 1 had an oppor- 
tunity of examining four figures, which were obligingly sent 
by Dr. Maxwell T. Masters. As they represent very remark- 
able deviations, it may be worth while to describe them, and, as 
far as possible, to bring them into connection with the monstro- 
sities before mentioned. 
In one flower (Pl. LX. fig. 40) all the parts are more or less peri- 
gynous. Whilst the stamens (probably two) are adnate to the 
style, the floral envelopes are free, but placed rather irregularly. 
There are two leaves, L, which, though completely foliaceous, are 
to be considered as sepals ; a cicatrix at c makes it probable there 
has been a third one of the same sort. Next follow a couple 
of leaves S1 and S2, both deeply divided, and subsequently three 
leaves P. The last-named are most likely petals; S1 and S2 are 
either petals or sepals, perhaps also transitional forms between 
the two. The honey-gland, which is pretty large, encloses a 
portion of the ovary. 
Another flower (Pl. LX. figs. 41 a, 41 b) affords a good illustra- 
tion of median prolification. The lowermost flower, which follows 
immediately on the peduncle, consists of a white calyx and petals 
of the usual colour. The stamens are described by Dr. Masters: 
“As usual, some of them partly petaloid." Next comes a second 
