Pn ———— ME 
PREFACE. lil 
are 4. If the placentiferous valves were portions of the 
sterile (right and left) valves, such would not be the 
case. Then taking into consideration the want of con- 
tinuity of structure between the two, I think there is 
very little doubt of the accuracy of Mr. Lindley’s 
theory. | 
In Thlaspi Y find traces, although obscure, of a qua- 
ternary division of the stigma, and as in the instance 
cited before, the divisions are opposite the sepals, a 
fact on which great stress is evidently to be laid. The 
alternation of the four larger stamens (which are op- 
posite the anterior and posterior sepal) is obscure, still 
the anticous and posticous stamina, which should be 
opposite the placenta are evidently wanting, the small- 
er are as usual opposite the lateral sepals, while the 
glands instead of being opposite the sepals, are op- 
posed to the petals. "The larger stamina still seem to 
belong to the petals, some allowance being made for 
displacement. In this case the 5th series, or the se- 
cond calycine one is totally wanting. Thus probably 
Thlaspi is 16 androus. The following numbers refer 
to the series as I have supposed them: 
3. Two kini developed. 
4. Glands. 
5. Wanting. 
6. Desdopot but displaced. 
7. Carpellary leaves. ar 
‘The style has 4 Vascular: fascicles and an = 
line in the centre. — 
In cee! Nasturtium ‘ieee collection no. 4 abt) "s 
