FRUCTIFICATION. 
Tab. XV. 
The parts of Fructification of the genus Apostasia ; from a 
drawing made by Mr. Bauer, from dried specimens, in 
February, 1832. 
1. A portion of a spike of Apostasia nuda in the bud state; natural 
size. 
2. A side view of a bud; magnified 10 diameters. 
3. The same opened forcibly; magnified 10 diameters. 
4. The same with the three sepals removed to shew the three petals; 
magnified 10 diameters. 
5. The intermediate petal which represents the labellum of other Or- 
chideae; this is narrower than the lateral petals, and tapers into 
a short unguis at its base; magnified 10 diameters. 
6. The two anthers in their natural position, all the floral envelopes 
having been removed; magnified 10 diameters. 
7- One of the anthers a little removed to shew the style which is held 
fast in the groove of the opposite anther; magnified 20 diameters. 
8. The same with the other anther further removed to shew the style 
wholly disengaged; magnified 20 diameters. 
9. Front view of an anther ; magnified 20 diameters. 
10. Transverse section of the same; magnified in the same degree. 
11. A group of pollen-grains ; magnified 5/0 diameters. 
12. A portion of the style, with the stigma; magnified 100 diameters. 
13. Transverse section of a portion of the ovarium ; magnified 20 
diameters. 
14. A small portion of the placenta, with ovula on it; magnified 100 
diameters. 
15. A group of ovula separated; magnified 200 diameters. 
16. A transverse section of a nearly ripe seed-vessel of Apostasia Wal- 
lichii; magnified 20 diameters. 
