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alternate apex apices appears articulations Atlantic attenuated base becoming branches Brit British brown cells CHAR characters closely coast Colour common composed compressed containing cylindrical Danm dark densely DESCR diameter dichotomous distinct DISTR ECTOCARPUS elliptical Endl erect Europe fibres figure filaments filiform flat forked four frond Fructification fruit Fucus genus GEOGR gradually green Grev growing half Harv Hook inches irregularly jointed KŁtz LAMINARIA lanceolate lateral length less linear lines long as broad lower Lyngb magnified mark minute Miss naked narrow natural nearly numerous oblong observed obtuse olive opposite Parasitical patent Phyc pinnate plant PLATE portion ramuli rarely receptacles rigid rocks Root scattered sessile shores short simple slender sometimes species specimens SPHACELARIA spores spreading stem Substance Summer Suppl surface Syst tapering tetraspores tufted twice upper wide Wyatt young
Page x - Naccaria. Frond filiform, solid, cellular ; the ramuli only composed of radiating free filaments.
Page vii - Rigid, articulated, or crustaceous, mostly calcareous seaweeds, purple when recent, fading on exposure to milk-white. Composed of closely-packed elongated cells or filaments, in which carbonate of lime is deposited in an organised form. Tetraspores tufted, contained in ovate or spherical conceptacles. Ceramidia furnished with a terminal pore. The following general remarks on this family are taken from Dr. Harvey's work : — The root, where this organ is manifested, is an expanded crustaceous disc,...