. Dansk botanisk arkiv. Plants; Plants -- Denmark. 262 Dansk Botanisk Arkiv, Bd. 3. Nr. 1. of Japanese Algæ", vol. I, pi. VIII, figs. 6—7. The tetrasporangia are developed generally in abundance throughout the whole stichidial body, in every case in the short ones, in the longer ones mostly in their upper end; sometimes the tetraspores are also developed in the upper end of the filaments which bear the tetrasporic branchlets. As I have already remarked, the antheridial stands of the genus Acanthophora have only been found in Acanthophora orien- talis. AsivENASY has described and figured t
. Dansk botanisk arkiv. Plants; Plants -- Denmark. 262 Dansk Botanisk Arkiv, Bd. 3. Nr. 1. of Japanese Algæ", vol. I, pi. VIII, figs. 6—7. The tetrasporangia are developed generally in abundance throughout the whole stichidial body, in every case in the short ones, in the longer ones mostly in their upper end; sometimes the tetraspores are also developed in the upper end of the filaments which bear the tetrasporic branchlets. As I have already remarked, the antheridial stands of the genus Acanthophora have only been found in Acanthophora orien- talis. AsivENASY has described and figured them in "Forschungs-. Fig. 257. Acanthophora spicifera (Vahl) Borgs. A, ramulus with antheridial stand. B, a cystocarp. C, part of a tetrasporic plant with stichidial ramuU. (About 20:1). reise S. M. S. Gazelle", IV Theil, 1888, Botanik (Algen), p. 48, tab. IX, figs. 11 and 12. In my material of Acanthophora spicifera male plants were fairly abundant and the antheridial stands (Figs. 252, 253 C) seem to be very similar to those of Acanthophora orientalis. The antheridial stands of Acanthophora remind one very much of the well-known ones of the genus Chondria, so splendidly figured by Thuret et Bornet in Etudes phycologiques, p. 88, pi. 45 and 46. The antheridial stands are developed from the first side branch of the trichoblast (Fig. 258^), the sterile part of it is commonly very perishable and the fully developed, ripe antheri- dial stands are therefore placed apparently terminally upon the. 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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