5 2 
Groom. — On a New 
Androecium. There are two trimerous whorls of stamens, 
the anthers of which are basifixed, sub-introrse (in the bud 
condition), and have four pollen-sacs each. Those which 
represent the outer whorl are opposite to the three outer seg- 
ments of the perianth, and are inserted on the wall of the 
ovary , at a lower level than the three inner stamens , which are 
inserted on the bases of the inner segments of the perianth 
(Figs, b, c,h,k). 
Gynaeceum. The pistil is remarkable in at once showing 
a transition from an apocarpous to a syncarpous type, and 
from a free to an adnate ovary. The lower portion of the 
ovary is inferior, trilocular, with two double rows of hori- 
zontal anatropous ovules attached to the axile placentae 
(Figs. a-k). 
Above, the ovary separates into three distinct ovuliferous 
follicle-like portions which gradually pass into three short 
styles capped by papillose capitate stigmas (Figs, a, b , c } l). 
Nectaries (Figs, b, c, e-h ). There are three septal nectaries 
which open opposite the segments of the inner whorl of the 
perianth, slightly above the highest point at which the latter 
are coherent to the wall of the ovary. They are three simple 
unbranched sacs, extended radially, and reaching down not 
quite so far as the chambers of the ovary. They are lined by 
a single layer of palisade-like secreting cells, which have 
densely staining contents and conspicuous nuclei. The cuticle 
of these cells is raised even in the bud-condition of the flower. 
No mechanical cells strengthen the nectariferous tissue. 
Fruit. The free portions of the gynaeceum dehisce like 
three follicles, and allow the escape of the seeds from the 
lower part of the ovary also. 
Seeds. These were described under the name of Petro- 
savia 1 : they are ribbed, albuminous, and with a very minute 
undifferentiated embryo. 
1 Percy Groom, loc. cit. 
