. The sea-beach at ebb-tide : a guide to the study of the seaweeds and the lower animal life found between tidemarks . TIdotea U. flabellnta. Short, flattened stem, expanding into a broad, fan-shaped, smooth frond, concentrically zoned; margin wavy; thicklyincrusted with lime. Abundant at Key West. U. conglutinata. Deeply descending root; stem expanding into fan-shaped frond ; entire, lobed, or irregularly torn ; slightly incrusted withlime. The frond is composed of longitudinally parallel, adherent fila-ments, which are visible, giving a striated, rough surface. (Plate VI.) GENUS Halimeda Thi
. The sea-beach at ebb-tide : a guide to the study of the seaweeds and the lower animal life found between tidemarks . TIdotea U. flabellnta. Short, flattened stem, expanding into a broad, fan-shaped, smooth frond, concentrically zoned; margin wavy; thicklyincrusted with lime. Abundant at Key West. U. conglutinata. Deeply descending root; stem expanding into fan-shaped frond ; entire, lobed, or irregularly torn ; slightly incrusted withlime. The frond is composed of longitudinally parallel, adherent fila-ments, which are visible, giving a striated, rough surface. (Plate VI.) GENUS Halimeda This genus resembles the corallines externally, and is abundanton coral reefs. It appears as if formed of separate parts, resem-bling a series of heart- or kidney-shaped segments strung plants are more or less incrusted with lime. The branchingholdfast grasps particles of sand, and with them forms a solidball. H. tuna. Articulations roundish or half kidney-shaped, one half tothree quarters of an inch broad; frond flat, smooth, and thinner thanmost species ; bright green; somewhat flexible. (Plate VII.). n
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectmarinea, bookyear1901
