EXPLANATION OF THE PLATES* 
267 
Fig. 14. The same, with the threads rolled spirally around 
it. 
Fig. 15. Aspidium nemorale. Filices. A portion of the 
leaf magnified, with a single indusium. 
a. Miliary glands. 
b. Conceptacles each girt with its elastic, incomplete, 
peri spheric ring. 
c. Indusium kidneyshape, umbilicated, opened on the 
sides. 
Fig. 16. A conceptacle of the same much magnified, 
with its elastic ring and peduncle. 
Fig. 17. A conceptacle of the same torn open by the 
force of the elastic ring when ripe, and throwing out the 
seminules. 
Fig . 18. Gleichena circinata. Filices .• A conceptacle 
very much magnified, having an elastic ring completely 
surrounding it. 
Fig. 19. Schizea dichotoma. Filices . A conceptacle 
much magnified, having an elastic ring surrounding it at 
the tip. 
Fig. 20. Marchantia polymorpha. Hepciticce. Fructifi- 
cation when ripe, and much magnified. 
a. Perichaetium split lengthways. 
1. Sheath. 
c. Pedicell. 
d. Capsule opened, valves or teeth turned back. 
e. Elastic threads dispersing the seminules. 
Fig. 21. A globule or capsule of the same not quite ripe, 
and much magnified. 
a. Paraphyses. 
b. Perichaetium. 
c. Sheath, being in fact the detached pannexterne. 
d. Pedicell. 
e. Capsule or globule. 
Fig. 22. A fructification of the same, in its early stage, 
and much magnified. 
a . Paraphyses. 
b. The jaggs of the perichaetium. 
c. The ovary, according to some authors. 
d. The style of the same. 
e. The stigma of the same. 
Fig. 23. A part of the frond of the same magnified, 
having two origomes. 
a. An origome beginning to show itself. 
b. Another entirely developed, with lenticular bulbilles. 
