. Dansk botanisk arkiv. Plants; Plants -- Denmark. 8 Dansk Botanisk Arkiv, Bd. 3. Nr. 1. or more irregularly shaped discs up to 300^ in diameter or even more. The young specimens have a nearly circular or somewhat undulate continuous margin (Fig. 3, a and b), in older specimens it is more irregular and the extremeties of the filaments become. Fig. 3. Erythrocladia subintegra Rosenv. a, b, young plants seen from above, c, older plants with more irregular margin, d, transverse section of the thallus. (About 700:1). more or less free (Fig. 3 c). It has marginal groxN^h and, as pointed out by Rose
. Dansk botanisk arkiv. Plants; Plants -- Denmark. 8 Dansk Botanisk Arkiv, Bd. 3. Nr. 1. or more irregularly shaped discs up to 300^ in diameter or even more. The young specimens have a nearly circular or somewhat undulate continuous margin (Fig. 3, a and b), in older specimens it is more irregular and the extremeties of the filaments become. Fig. 3. Erythrocladia subintegra Rosenv. a, b, young plants seen from above, c, older plants with more irregular margin, d, transverse section of the thallus. (About 700:1). more or less free (Fig. 3 c). It has marginal groxN^h and, as pointed out by Rosenvinge, the cells are dichotomously divided but the bifurcation is most often not quite equal, the one cell being larger than the other. Near the margin the cells are often linear-oblong or forked, in the middle shorter, oblong, or of more irregular shape. The diameter of the cells is mostly 3—4 fi but it is very variable and so also the length which often reaches up to 16« or more. The chromatophore was not clearly visible but it seems to be Fig. 4. Erythrocladia subintegra parietal with a pyrenoid in the middle Rosenv. Part of a plant seen of the cell. from above. In some of the rpii • /-c^- a\ cells sporangia are cut off. The sporangia (Fig. 4) are as (About 700:1). said by Rosenvinge cut off in the ends of the vegetative cells through a somewhat curved wall; they are of variable shape and size, mostly roundish orbicular and about 3—4/^ broad. In referring this plant to the genus Erythrocladia I confess that it is not without doubt. According to Rosenvinge 1. c. p. 72. 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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Keywords: ., bookcentury1900, bookcollectio, bookdecade1910, booksubjectplants
