. [A biological survey of the waters of Woods Hole and vicinity. Marine animals; Marine plants. 540 OF THE BUREAU OF PyramW Rock 33 \<^' Chart 270.—Distribution of algae on Spindle Rocks, June 29, 1905. The character of the vegetation on the rocks had greatly changed from that of May 22 (chart 269), and marked the beginning of the characteristic summer flora and the end of the spring season. A green zone on the upper parts of the rocks was composed chiefly of Ulothrix implexa (3), Ulva Laduca var. rigida (5), and Enleromorpha intcstinalis (7); Cladophora lanosa var. un
. [A biological survey of the waters of Woods Hole and vicinity. Marine animals; Marine plants. 540 OF THE BUREAU OF PyramW Rock 33 \<^' Chart 270.—Distribution of algae on Spindle Rocks, June 29, 1905. The character of the vegetation on the rocks had greatly changed from that of May 22 (chart 269), and marked the beginning of the characteristic summer flora and the end of the spring season. A green zone on the upper parts of the rocks was composed chiefly of Ulothrix implexa (3), Ulva Laduca var. rigida (5), and Enleromorpha intcstinalis (7); Cladophora lanosa var. uncialis, formerly so abtmdant and conspicuous, had entirely disappeared. The brown zone near low-water mark (the dotted line) was composed almost entirely of Scytosiphon lomentarius (26), and Chordaria flagelliformis (28); Phyllitis fascia (24) was only represented by a few old plants, and Eciocarpus penicillatus had disappeared. Poly- siphonia urceolata, so plentiful throughout the spring, was no longer present, but Pol'ysiphonia violacca (48) was abundant and with Ceramium rubrum (43) formed a fringe around the rocks a little below low- water mark with Clwndms crispus (49) in deeper water. Ncmalion multifidum (40) had begun to appear at and above low-water mark. List of algae: Calothrix scopulorum, i, in small patches; Ulothrix implexa, 3, covering the top of III, VI, and Pyramid Rock; Ulva Laciuca var. rigida, 5, abundant young growths; Enteromorpha intesti- nalis, 7, much; Codioliim grcgaritim, 10, abundant on barnacles; Phyllitis fascia, 24, few old plants; Punctaria plantaginea, 25, few; Scytosiphon lomcntarius, 26, abimdant; Chordaria flagelliformis, 28, very abundant; Chorda filum, 31; Laminaria Agardhii, 2,3, scattered plants; Laminaria Agardhii var. vittata, 34, small group; Ncmalion multifidum, 40, yoimg growth; Ceramium rubrum, 43, few; Polysiphonia violacea, 48, abimdant; Chondrus crispus,.^g, Please note that these images are extracted from scanned pag
Size: 1592px × 1569px
Photo credit: © Library Book Collection / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1910, booksubjectmarineanimals, bookye
