. Advances in marine biology: volume 17. Coral fisheries. ECOLOGY AND TAXONOMY OF Holimeda 151 condition but felt that it occurred largely in stunted plants. She assigned some of them to incrassata f. ovata. In addition to having this special nodal pattern, micronesica is characterized by peripheral utricles which usually separate readily, and by an extremely modified basal, rarely suprabasal, segment which may become very large in some specimens but is less distinctive in others. In well-developed plants the growth is prostrate, with branches projecting in all lateral directions from the grea
. Advances in marine biology: volume 17. Coral fisheries. ECOLOGY AND TAXONOMY OF Holimeda 151 condition but felt that it occurred largely in stunted plants. She assigned some of them to incrassata f. ovata. In addition to having this special nodal pattern, micronesica is characterized by peripheral utricles which usually separate readily, and by an extremely modified basal, rarely suprabasal, segment which may become very large in some specimens but is less distinctive in others. In well-developed plants the growth is prostrate, with branches projecting in all lateral directions from the greatly enlarged basal (suprabasal) segment. These branches occasionally terminate in rope- like extensions to approximately 6 cm in length, which consist of intertwined rhizoidal filaments. Halimeda fragilis W. R. Taylor Figure 47. Halimeda fragilis Taylor (1950), p. 88, Plate 48, Fig. 2; Hillis (1959), p. 363, Plates 3, Fig. 47. H. fragilis, with holdfast. From Enewetak Atoll, pass between Alembel and Lojwa Islets, towards seaward side, 18 XII 75, Hillis-Colinvaux. Scale bar is 2 cm. (Photograph by The Ohio State University Department of Photography.) Plants compact, often cushion-like, to 8 cm tall including the rather small holdfast region, rhizoids not noticeably interlaced with sand particles; calcification heavy; colour on drying white, cream or greyish-green, the surface dull; branches occurring in more than one plane with up to four arising from a single segment; basal segment generally inconspicuous, cylindrical to reniform; others brittle, frequently ribbed and sometimes. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Hillis-Colinvaux, Liewellya. London : Academic Press ; Toronto
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