. Dansk botanisk arkiv. Plants; Plants -- Denmark. 220 Dansk Botanisk Arkiv, Bd. 3. Nr. 1. longer, in the young cells rather broad (Fig. 206 B), in the older cells narrower, irregularly sinuate ribbons (Fig. 206 F). Each cell i\. Fig. 206. Callithamnion byssoides Arn. A, B, branches with tetraspores (75:1), (150:1). C, carpogonial branch with trichogyne (160:1). Z), young cystocarp (160: 1). E, older cystocarp (75:1). F, cell with chromatophore (75:1). I contains a single nucleus (Fig. 206 5), but I wish to point out that I have not succeeded in seeing the nucleus in the older and larger cells


. Dansk botanisk arkiv. Plants; Plants -- Denmark. 220 Dansk Botanisk Arkiv, Bd. 3. Nr. 1. longer, in the young cells rather broad (Fig. 206 B), in the older cells narrower, irregularly sinuate ribbons (Fig. 206 F). Each cell i\. Fig. 206. Callithamnion byssoides Arn. A, B, branches with tetraspores (75:1), (150:1). C, carpogonial branch with trichogyne (160:1). Z), young cystocarp (160: 1). E, older cystocarp (75:1). F, cell with chromatophore (75:1). I contains a single nucleus (Fig. 206 5), but I wish to point out that I have not succeeded in seeing the nucleus in the older and larger cells. The plant was found with cystocarps, anthe- ridia and tetrasporangia in the months of January and February. It occurred in shallow water, in a sheltered place upon the roots of the mangroves or upon other algæ growing here. St. Croix: The Lagoon of Christiansted. Geogr. Distrib.: Atlantic coast of Europe and North Africa, Mediterranean Sea, Atlantic coast of North America, West Indies etc. 3. Callithamnion spec. This plant being quite sterile (only once a speci- men was found with a few nearly ripe tetraspor- angia) I have not been able to determine it exactly, but as it was found abundantly in some places in deep water I just want to give a short des- cription of it and a few figures too (Fig. 208).. 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 Dansk botanisk forening. Kbenhavn : Dansk botanisk forening


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