. The sea-beach at ebb-tide : a guide to the study of the seaweeds and the lower animal life found between tidemarks . PLATE XLVI. GOKiiONIAS. Miirirra sprritVra. (inr^onia PLATE XLVII. Leptogorgia rigida (a gorgonia).Gorgonia flabellum (a gorgonia). Eunicea lugubris (a gorgonia).Leptogorgia Agassizii (a gorgonia).Pennatula borealis and P. aculeata(sea-pens). SEA-FANS AND SEA-PENS 153 what firm crust. This, in dried specimens, breaks off colony branches profusely, or rather separates by fission, inone plane, the large and small branches making a network
. The sea-beach at ebb-tide : a guide to the study of the seaweeds and the lower animal life found between tidemarks . PLATE XLVI. GOKiiONIAS. Miirirra sprritVra. (inr^onia PLATE XLVII. Leptogorgia rigida (a gorgonia).Gorgonia flabellum (a gorgonia). Eunicea lugubris (a gorgonia).Leptogorgia Agassizii (a gorgonia).Pennatula borealis and P. aculeata(sea-pens). SEA-FANS AND SEA-PENS 153 what firm crust. This, in dried specimens, breaks off colony branches profusely, or rather separates by fission, inone plane, the large and small branches making a network offan-like shape and often of great fineness and intricacy. Thesefans attain a length of several feet and a corresponding breadth,and are abundant in semi-tropical as well as in more southernwaters. In color they are red, yellow, brown, or purple. ORDER PENNATULACEA SEA-PENS These singular colonies resemble quill-feathers, such as areused for pens, and are named for this reason. The long, hornycentral axis is naked below, and is partly buried in the sand, butis not permanently attached. The upper portion of the axis hastwo rows of short, opposite, lateral branches; on the upper sideof the bran
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectmarinea, bookyear1901
