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, 
perispheric 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. lices. A couceptacle 
much magnified, having an elastic ring surrounding it at 
the tip. 
Bie, 20. Marchantia polymorpha. Hepatice. Fructifi- 
cation when ripe, and much magnified. 
a. Pericheetium split lengthways. 
b. Sheath. 
c. Pedicell. 
d. Capsule opened, valves or teeth turned back. 
é. Klastic threads dispersing the seminules. 
Fig. 21. A globule or capsule of the same not quite ripe, 
and much magnified. 
Paraphyses. 
Pericheetium. 
Sheath, being in fact the detached pannexterne. 
. Pedicell. 
Capsule or globule. 
Fig. 22. A fructification of the same, in its early stage, 
and much magnified. 
Paraphyses. 
The jaggs of the perichetium. 
The ovary, according to some authors. 
. 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. 
oS SS 
Sse 
