210 EXPLANATION
P la t e III. FUCOIDEÆ.
H im a n t h a l ia . Fig. 1. An entire plant of H. lorea. 2. 2. Young
plants ; natural size. 3. A transverse slice of the Receptacle.
4. One of the Globules of Seeds and Filaments removed from the
Receptacle. 5. Filaments and Seeds ; magnified.
P l a te IV. LAMINARIEÆ.
A l a r ia . Fig. 1. The lower part of an immature Frond of A. esculenta.
2. One of the fructifying Leaflets of the stem of a mature plant ;
natural size. 3. Section of one of the Leaflets. 4. Seeds.
5. Filaments that issue from the minute pores on the surface of
the Frond ; magnified-
P l ate V. LAM IN A R IEÆ a n d SPOROCHNOIDEÆ.
L a m in a r ia . Fig. 1. Fronds of L. debilis; natural size. 2. Appearance
of the frond under the microscope.
D e s m a r e s t ia . Fig. 1. Portion of the Frond of D. ligulata ; natural
size. 2. Portion of the Frond of D. aculeata. 3. Portion of the
young frond of the same species ; natural size.
P la t e VI. SPOROCHNOIDEÆ a n d L IC H IN EÆ .
D i c h l o r i a . Fig. i . Portion of the Frond of D. viridis; natural size.
2. Portion of a Bianchlet. 3. Section of the Stem. 4. Cellular
structure of the Stem. 5. Structure of the branches, cells intermixed
with filaments ; magnified.
S p o r o c h n u s . S. rhizodes; Fig. 1. Portion of the Frond ; natural
size. 2. Portion of the Frond. 3. Transverse slice of the Frond,
and one of the warts of fructification. 4. Filaments, with incrassated
fructifying summits S. pedunculatus ; Fig. 1. A branch ; natural
size. 2. One of the Receptacles terminated by its tuft of
filaments. 3. Section of a Receptacle. 4. Filaments, with the
OF TH E PLATES. 211
fertile summits. 5. A portion of one of the terminating Filaments
of the Receptacle ; magnified.
L ic h in a . i . pygmiea; Fig. 1. Tuft; natural size. 2. Part of an
entire Frond. 3. A Capsule. 4. Portion of a transverse slice of
the Capsule. 5. Seeds. 6. An old Capsule. L . confinis ;
Fig. 1. Tuft, natural size. 2. An entire plant. 3. A Capsule.
4. A Capsule divided. 5. A transverse slice of the Capsule.
6. Seeds ; magnified.
■-’t 'If
P la t e VII. CH ORDARIEÆ a n d DICTYOTEÆ.
C h o r d a r ia . Fig. 1. A small plant of C. fiagelliformis ; natural size.
2. Portion of the Frond shewing the minute Filaments with
which it is covered. 3. A transverse slice shewing the cellular
internal structure surrounded by the club-shaped fi-uctiferous Filaments.
4. 4. Fructiferous Filaments; magnified.
C h o r d a . Fig. 1. A plant of C. Filum. 2. A portion of the Frond
artificially unrolled, to shew its spiral structure; natural size.
3. A small portion of the Frond, shewing its cellular structure,
and the position of the fructification. 4. Portion of the Frond in
fructification, shewing one of the transverse Septa. 5. Seeds;
magnified.
I
P late VIII. DICTYOTEÆ.
D ic t y o s ip h o n . Fig. 1. Portion of the Frond of D. fceniculaceus ;
natural size. 2. Portion of the Frond taken from the main stem.
3. Small portion of the same, shewing the structure and fructification.
4. Seeds ; magnified.
H a l is e r is . Fig. L Plant of H. polypodioides ; natural size. 2. Portion
of the Frond, with one of the Sori or masses of fructification.
3. Seeds, from the same, one of them having escaped from its
pellucid case. 4. A portion of the Frond having scattered seeds.
6. Seeds. 6. A portion of the Frond marked with map-like lines;
magnified.
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