. Dansk botanisk arkiv. Plants; Plants -- Denmark. 408 Dansk Botanisk Arkiv, Bd, 3. Nr. 1. the plant, a description of the development of the cystocarp. And finally, in 1896, Davis ^) pubHshed a paper in which he gives a very detailed description of the development of the cystocarp in Champia par- vula. Referring to these exa- minations with regard to the structure and develop- ment of the plant, I shall only mention here that I have often found the plant creeping on the leaves of Thalassia as well as on larger algæ, for instance, Udotea Flahelliim or Hali- meda. The filaments are more or less
. Dansk botanisk arkiv. Plants; Plants -- Denmark. 408 Dansk Botanisk Arkiv, Bd, 3. Nr. 1. the plant, a description of the development of the cystocarp. And finally, in 1896, Davis ^) pubHshed a paper in which he gives a very detailed description of the development of the cystocarp in Champia par- vula. Referring to these exa- minations with regard to the structure and develop- ment of the plant, I shall only mention here that I have often found the plant creeping on the leaves of Thalassia as well as on larger algæ, for instance, Udotea Flahelliim or Hali- meda. The filaments are more or less decumbent and, from the nodes on that side of the filaments facing the hostplants, groups of sur- face cells grow out forming short hapters by means of which the plant attaches itself to the substratum (Fig. 392). The tetraspores are formed in the peripheral layer in broad belts com- prising several joints, gene- rally rather close to the apex of branches (Fig. 392). The antheridial stands (Fig. 393) form small roundish patches which often cover several coherent joints rather densely; some- times the whole upper part of a branch is covered. Davis has 1. c, 1896, pi. VII, fig. 1 figured a part of a male plant in which these often large zones of antheridial stands are seen. A few young female plant have also been found; the cysto-. cz?' Fig. 392. Champia parvula (Ag.) Harv. a, part of a creeping filament with rhiz- oids and tetrasporangia (about 22:1); b, one of the bundle of rhizoids more magnified (about 60:1) ^) Davis, B. M., Development of the cystocarp of Champia parvula (Bot. Gazette, vol. 21, 1896, p. 109).. 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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