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C l a s s a n d O i i d e r CRYPTOGAMIA ALGÆ, T i n « .— N a t . O r d . ALGÆ, Jms.
De Cand.
G E N E R IC C H A R A C T E R .
Frons suhcoriacea (vel expanso-plana, et tune aut dichotoma aut pinnata, vel Jiliformis).
Fructus, capsuloe sphoericoe intus Joventes nucleum globosum sporidiorum
rolundorum.—A g .
Frond subcoriaceous (either expanded-plane and then dichotomons, or pinnated,
or filiform). Fructification, spherical capsules containing a globose
nucleus of rounded sporidia.
S P E C I F IC C H A R A C T E R .
S p h æ r o c o c c u s jubatus ; fronde flaccida, membranaceo-coriacea, plana, h-
neari-attenuata, subvage ramosa, vel pinnatifida, ciliata, ciliis lineari-subu-
latis capsulferis.
S. frond flaccid, membranaceo-coriaceous, plane, linear-attenuated, somewhat
vaguely branched or pinnatifid, ciliated, the ciliæ linear-subulate,
capsuliferous.
F u cu s jubatus, Linn. Trans, v. 3. t. 17. f. 2.?— Stackh. Ner. Brit. t. 11.?—
Esper. Ic. Fuc. t. 127- ? f d e Turner et Agardh.
F u cu s ciliatus, vars. spinosus et lanceolatus, Turn. Hist. Fuc. v. 1. p. 158. et
vars. jubatus et angustus. Turn. 1. c. ?
S p h æ r o c o c c u s ciliatus, vars. linearis et spinosus, Ag. Sp. Alg. v. 1. p. 265.;
vars. jubatus et angustus, Ag. 1. c. ?—Ag. Syst. Alg. p. 221.
H a b . In the sea, attached to rock and even the larger Algæ, producing ripe
fructification in summer. On many parts of the Devonshire coast, Mrs
G r i f f i t h s . Near Plymouth, producing capsules, Miss H i l l .
Hoot creeping, composed of numerous, cylindrical, branched, thickish, entangled
fibres. Fronds numerous, branched, 3-9 inches in length, linear
or linear-lanceolate, attenuated, filiform at the base, very gradually
dilating, between plane and compressed, and varying from one to four
lines in breadth in the broadest part. Branches sometimes few, nearly
simple and elongated, and given off irregularly; more frequently,
however, they are arranged in an unequally pinnatifid manner, elongated,
and all of them, like the primary frond, attenuated at then-
base and apex. These branches or segments (for strictly speaking the
frond is a pinnatifid one), are sometimes set with other short ones,
VOL. VI.
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