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it.
EXPLANATION OF THE PLATES- 267
Fig. 14. The same, with the threads rolled spirally around
Fig. 15. Aspidium nemorale. Filices. A pprtion 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. Filices. A conceptacle
much magnified, having an elastic ring surrounding it at
the tip.
Fig-. 20. Marchantia polymorpha. Hepaticce. Fructification
when ripe, and much magnified.
a. Perichsetium split lengthvv'ays.
I. Sheath.
€. Pedicell.
d. Capsule opened, valves or teeth turned back.
e. Elastic threads dispei'sing the seminules.
Fig. 21. A globule or capsule of the same not quite ripe,
and much maonified.
a. Paraphyses.
h. Perichsetium.
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.
h. The jaggs of the perichajtium.
c. The ovary, according to some authors.
d. The style of the same.
e. The stigma of the same.
Fig.2S. A part of the frond of the same magnified,
having two origomes.
a. An origome beginning to show itself.
h. Another entirely developed, with lenticular bulbilles.