P l a t e L I I I .
GELIDIUM CORNEUM, Lamour.
Gen. Char. Frond linear, compressed, pinnated ; its axis composed of
densely interwoven, longitudinal, tenacious, continuous fibres; the
periphery of small, polygonal cellules. Fructification of two kinds on
distinct individuals; 1, tubercles (fiavellidia) immersed in swollen
ramuli, containing a spberioal mass of oblong spores. 2, tetraspores
contained in club-shaped ramuli, bipartite or tripartite. Gelidium
(Lam.)—from gelu, fro st, whence also gelatine; but none of the species
of the restricted genus are ;
Gelidium corneum; frond between cartilaginous and horny, flattish, distichous
; branches linear, attenuated at each end, pinnate or bipinnate;
pinnules opposite or alternate, patent, obtuse.
G e l i d i u m com eum , Lamour. Fss. p . 4 1 . Go-ev. Alg. Brit. p . 1 4 1 . t . x v .
Hook. Br. FI. vol. ii. p . 3 0 5 . Harv. in Mack. FI. Hib. p a r t 3. p . 2 0 3 . Wyatt,
Alg. Banm. n o . 3 0 . Harv. Man. p . 8 0 . J. Ag. Alg. Medit. p . 1 0 2 . Fkdl.
3rd. Suppl. p . 4 1 . Katz. Phyc. Gen. p . 4 0 6 . Mont. PI. Canar. p . 1 5 8 .
S m l e e o c o c o u s co rn cu s, Ag. Sp. Alg. vol. i. p . 2 7 9 . Syst. p . 2 2 5 . Hook.
FI. Scot. p a r t. 2. p . 1 0 4 . Grev. FI. Fdin. p . 2 9 6 . Spreng, Syst. Veg.
vol. iv . p . 3 3 7 .
F u cu s comeus, Huds. FI. Ang. p . 585. Stack. Ner. Brit. p . 61. 1 .12. Turn.
Syn. vol. ii. p . 272. F. Bot. t. 1970. Ckm. Ess. p . 317.
Var. ft sesquipedale; “ frond long, between compressed and flat, linear,
tripinnate, pinnee attenuated at their base, ramuli linear, oblong, short,
obtuse.”— Grev.
G e l i d i u m co rn eum , var. sesq u ip ed a le , Grev. I. c. p . 1 4 2 .
F u cu s corneus, var. sesquipedalis, Turn. Hist. t. 257. f ./.
N w .y , pinnatum; “ frond narrow, tripinnate, the piimie patent, nearly
linear, bluntisli.”— Grei;.
G e l i d i u m co rn eum , var. p in n a tum , Grev. I. c.
F u cu s pinnatas, Huds. El. Angl. p. 548.
F u cu s liy p n o id es, Besv. El. A ll. v o l, 2. p . 426.
Var. 3, unifm-me; “ aU the pinnse patent, attenuated at the base, obtuse at
the points and scattered.”—Turn.
G e l id iu m co rn eum , var. u n ifo rm e , Grev. I. c. p . 1 4 3 .
F u cu s corneus, var. uniformis, Turn. I. c.
Yar. e, capillaceum; “ frond narrow, pinnse clustered towards its summit,
nearly setaceous and somewhat erect.”—Turn.
G e l i d i u m co rn eum , var. c ap illaceum , Grev. I. c.
F u cus co rn eu s, var. capiUaceus, Turn. I. c.
Var. latifolium; “ frond broad, nearly flat, pinnse linear-lanceolate,
mostly simple, set with numerous, short, setaceous pinnse.”— Greo.
G e l i d i u m co rn eum , var. la tifo lium , Grev. I.e.
Nai.ri, confertum; “ frond compressed, repeatedly pinnated, pinnse and
pinnulse long, very thin, acute and irregularly divided.”— Grev.