Poa 
ja 
DR. O. STAPF ON SARARANGA SINUOSA. 483 
each carpel has one bundle ascending straight to the stigma 
on its ventral or inner side, and another ascending in a curve 
along its mesial line on the dorsal side (PI. VI. tigs. 18, 23). 
Both bundles fuse below the stigma and end here in a cluster 
of tracheids, very much in the same way as vascular bundles 
terminate below water pores (Pl. VI. fig. 21). The ventral 
bundle emits the branch which supplies the funicle and ends 
in the chalaza, where it breaks up into scattered tracheids 
(Pl. VL. figs. 18, 22). The parenchyma immediately below the 
epidermis is collenchymatic. Along the vascular bundles it 
forms a mantle (Pl. VI. figs. 18, 23) consisting of smaller and 
more oblong cells which are rather rich in plasma. A similar 
parenchyma fills the space between the two rows of ovary cells 
and surrounds that part out of which the hard endocarp is 
formed later on. This part consists of an outer mantle of large 
thin-walled cells which are radially arranged around the cavity 
(Pl. VI. fig. 23) and of an inner mantle which is laterally 
reduced toa single layer of small cells but thicker along the 
edges, where it remains in a meristematic condition for some 
time. The rest of the parenchyma of the gynaeceum consists 
of very wide thin-walled polygonal cells. A part of this 
parenchyma, but particularly the collenchyma is more or less 
rich in starch. The stigma (PI. V. figs. 16, 17) is formed of 
thin-walled cells which radiate from the base, the peripheral 
ones bulging out into short and very close papille. The tissue 
forming the stigma seems to lose its vitality very soon. Even 
in the earliest states which I saw it was browned and appa- 
rently dry, and its cell-walls stained purple rapidly when 
treated with phloroglucine and chloric acid. 
Finally I have to mention the peculiar structure of the 
tissue at the base of and around the sutural pores (Pl. VI. 
fig. 19; VII. fig. 24). The sutural pores vary in length, but 
in no case do they exceed a quarter of the distance between 
their mouth and the top of the ovary-cell. The mouth is 
funnel-shaped and circular, or more or less oblong in transverse 
section. Sometimes it happens that it is divided into two 
apertures by a narrow and low strand of tissue whilst it is 
simple below. The channel descending from this funnel- 
shaped mouth is very narrow but widens a little at the very 
base, particularly in a direction parallel to the double row of 
stigmas to which the pore belongs. The upper part of the 
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