. The sea-beach at ebb-tide : a guide to the study of the seaweeds and the lower animal life found between tidemarks . PLATE XVI. Pbyllospora Meuziesii. Halidrys osruunda. Sargassum vulgare. OLIVE-GREEN AND BROWN SEAWEEDS 73 _F. seitfitHi*. Frond distinctly toothed or serrated along the margin ;midrib conspicuous through the main axis and forked branchings; noair-vessels. This species is rare on the Atlantic coast. (Plate XV.) Frond narrow, tough, without air-vessels; regularforked branching; midrib distinct below, inconspicuous above; recep-tacles long, narrow, not inflated. Found
. The sea-beach at ebb-tide : a guide to the study of the seaweeds and the lower animal life found between tidemarks . PLATE XVI. Pbyllospora Meuziesii. Halidrys osruunda. Sargassum vulgare. OLIVE-GREEN AND BROWN SEAWEEDS 73 _F. seitfitHi*. Frond distinctly toothed or serrated along the margin ;midrib conspicuous through the main axis and forked branchings; noair-vessels. This species is rare on the Atlantic coast. (Plate XV.) Frond narrow, tough, without air-vessels; regularforked branching; midrib distinct below, inconspicuous above; recep-tacles long, narrow, not inflated. Found from Boston northward. F. ceranoides. Frond flat, rather membranaceous, or less leatherythan in the preceding species; repeatedly forked; midrib not runningthrough every division ; no air-vessels. (Plate XV.) GENUS Ascophyllum A. nodosutn. This species, formerly called Fucus nodosus, is next toFucus resiculosus the most common rockweed. Frond one to five feetlong, dark brown, strap-like, leathery; width of main stems one fourthof an inch or more, and uniform throughout; large, single, oblong air-vessels distend
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectmarinea, bookyear1901
