220 MR. R. A. ROLFE ON THE APOSTASIEZ. 
it is a little narrower at the extreme base, and perhaps a little 
longer relatively to the style, but otherwise very similar (fig. 28). 
Pollen.—The pollen-grains are ellipsoidal in shape, invariably 
simple, dry, and quite free from each other (figs. 14 and 25). 
Griffith speaks of that of Apostasia as grooved ; but I was unable 
to satisfy myself on this point, although I examined A. Wallichit 
under a } objective both dry and in water. Fig. 25 represents 
approximately the shape. The pollen of Neuwiedia Curtisii was 
examined in the same way (fig. 14), and beyond a slight tendency 
to be more acute at the ends, I could not observe much difference 
between the two. 
Style and Stigma.—The free portion of the style is invariably 
slender, arising from the apex of the column between the fila- 
ments. In Neuwiedia it is slightly flattened laterally, distinctly 
grooved along the face, and terminated by a somewhat enlarged, 
rounded, but distinetly oblique and somewhat bilateral stigma 
(see fig. 11). In Apostasia the bilaterality is also distinctly 
marked (figs. 21 and 23) ; and although it is invariably described 
as very minutely three-lobed at the apex, I am inclined to think 
it bilobed, as in Neuwiedia. This is the result of my observations ; 
but I have not had time to make sections of this minute organ to 
settle the point. 
Capsule —The capsule corresponds very closely to the characters 
given of the ovary. Im Newwiedia Griffithii it is strongly tri- 
quetrous-ovoid, strongly keeled along the back of the carpels, but 
grooved along the face opposite each dissepiment (fig. 8). The 
surface is strongly hispidulous. This is the only species of which 
I have seen mature capsules; but the somewhat immature ones 
of N. Lindleyi are more strongly triquetrous, longer, and nearly 
glabrous. In Apostasia the capsule is narrowly linear, subterete, 
with three strong rounded keels. The texture is stouter, the 
walls and dissepiments much stouter than in Neuwiedia (see 
fig. 26). In both genera the capsule is narrowed above, and 
crowned with the remaius of the withered perianth-segments ; 
but in Neuwiedia it is more distinctly rostrate (fig. 8). It is 
three-celled, with axile placentas and numerous minute seeds 
(figs. 8 and 26). 
Seeds.—The seeds are minute, with reticulated testa, corre- 
sponding in structure to those of the order generally. In 
Neuwiedia Griffithii they are narrowly oblong in shape, almost 
truncate at the ends, the roundish embryo, by reason of its darker 
