566 
EXPLANATION OF THE PLATES. 
Fig. 31. Stamen of Chloranthus monostachys: a, connectivum. 
Fig. 32. Stamen of Eriodendron Samaiima ; after Von Martins; anther sinuous 
and one-celled. 
PLATE IV. 
Figs. 1, 2, 3. Different views of the stamens and stigma of Stylidium violaceum ; 
after Ferdinand Bauer : a a, anthers ; b, a column formed by the union of their 
filaments; c, a cup-like disk, consisting of the flattened and united apices of 
the filaments ; d, the stigma, the style of which is united with the column of 
filaments through its whole length. Fig. 1. The anthers when burst, seen in 
front ; fig. 3. the same, from behind ; fig. 2. the anthers pushed aside, so as 
to show the stigma. 
Fig. 4. Stamen of Rhynchanthera cordata; after Von Martius: a, a minute mem- 
brane that separates the filament d from the elongated connectivum c ; 6, the 
attenuated beak-like apex of the anther, opening by a single pore at the point. 
Fig. 5. Stamen of Lasiandra Maximiliana; after Von Martius: a, dilated bases 
of the two cells of the anther ; 6, pore at the apex,. through which the pollen 
is discharged. 
Fig. 6. Stamen of Glossanhen floribundus ; after Von Martius : a, a dilated 
petaloid connectivum, to the face of which the lobes of the anther adhere ; 
6, the filament. 
Fig. 7. Stamen of Lacistema pubescens ; after Von Martius ; a, filament ; 
6, forked connectivum ; c c, separate lobes of the anther. 
Fig. 8. Stamen of Gomphrena leucocephala; after Von Martius: a, broad dilated 
two-toothed filament, bearing a linear one-celled anther. 
Fig. 9. Stamen of Humirium floribundum ; after Von Martius; a, a large 
tuberculated petaloid connectivum. 
Fig. 10. Stamen of a species of Cryptocarya, from Chili, in which the anther 
opens, as in other Laurineae, by valves that roll back when they separate : 
a, one lobe of the anther, with the valve not separated ; b, the other lobe, with 
the valve in the act of rolling back; cc, abortive stamens, under the form of 
glands. 
Fig. 1 1 . Stamen of Berberis vulgaris, exhibiting the same phenomenon : a, valve 
closed; b, valve separated and recurved. 
All the followhig figures ofi pollen are taken, with scarcely aiiy alteration, 
from Purkinje, and are drawn to the same scale, so that their relative sizes 
are slmvn. 
Fig. 12. 
Pollen of Stratiotes aloides. 
13. 
Calla aethiopica. 
14. 
Elymus sabulosus. 
15. 
Avena latifolia. 
16. 
Scirpus romanus. 
17. 
Pancratium declinatum. 
18. 
Populus alba. 
19. 
Mirabilis Jalapa. 
20. 
Urtica dioica. 
21. 
Armeria fasciculata. 
