GELIDIUM corneum, var. confertum, Grer. 7. c. 
Fucus corneus, var. confertus, Turn. 1. c. 
Var. 6, fleruosum; frond rather broad, flat, very flexuous, pinnate or sub- 
bi-pinnate, pinne curved, tapering to each end, subulate. 
Var. 1, aculeatum; “frond compressed, very thin, pimnated very irregu- 
larly, pine divaricated, irregularly divided and set with minute diva- 
ricate, subulate ramuli, crowded towards the summit of the frond.” — 
Grev. 
GELIDIUM corneum, var. aculeatum, Grev. l. c. 
Var. x, abnorme; “frond compressed, irregularly branched, branches and 
pinne producing at their extremities, little tufts of partly deflexed 
ramuli.”— Grev. 
GELIDIUM corneum, var. abnorme, Grev. /. c. p. 144. 
Fucus corneus, var. abnormis, Turn. 1. c. t. 257. f. 7. 
Var. , pulchellum ; “frond capillary, compressed, bi-tripinnate, pinnze be- 
tween linear and clavate, obtuse.”—TZurn. 
GELIDIUM corneum, var. pulchellum, Grev. 7. ¢. 
Fucus corneus, var. pulchellus, Turn. 7. c. 
Var. », claviferum ; “ frond subcylindrical, capillary, irregularly divided, the 
ultimate ramuli or pinnule obovate, edged with minute, scattered 
teeth.” —Grev. 
GELIDIUM corneum, var. claviferum, Grev. 7. ¢. 
Fucus corneus, var. clavifer, Turn. 1. c. 
Var. », clavatum; “frond capillary, between cartilaginous and membra- 
naceous, decumbent, creeping ; ramuli in the form of inversely lanceo- 
late or ovate leaves, much attenuated at their insertion.” —Grev. 
GELIDIUM corneum, var. clavatum, Grev. 1. c. 
Fucus pusillus, Stack. Ner. Brit. p.16.t.6. Turn. lc. t. 79. 
Fucus cespitosus, Stack. Ner. Brit. p. 59. t. 12. 
Var. o, crinale; “frond setaceous, subcylindrical, somewhat dichotomously 
branched, sometimes three-forked at the top, and bearing a few ellip- 
tic-oblong ramuli, attenuated at their insertion.”—Grev. 
GELIDIUM corneum, var. crinale, Grev. 1. c. 
Fucus crinalis, Turn. Hist. Fuc. t. 198. 
Has. On submarine rocks, from the verge of high water to the extreme of 
low water, and, extending to a greater depth; often frmging the mar- 
gin of tide pools in places shaded by other algee. Common on all 
our shores. 
Geocr. Distr. The temperate and tropical zones of both hemispheres. 
A most variable plant, found in some of its varieties in almost 
all seas, and abundant everywhere. I have but to refer to the 
accompanying plate, in which I have represented some of the 
more striking of the British varieties; and to the elaborate 
analyses of Turner, in the ‘Historia Fucorum, and of Greville 
in his ‘A/gye Britannice’. My limited space precludes the possi- 
bility of entering more fully into its history in this place. 
Fig. 1. GeLipruM coRNEUM, var. y. pinnatum. 2. var. 6, fleruosum. 3. var. ¢, 
latifolium. 4. var. d, pulchellum? 5. var. o, crinale. 6. var. v, clavatum. 
7. var. x, abnorme. 
