. Dansk botanisk arkiv. Plants; Plants -- Denmark. F. Borgesen: Rhodophyceæ of the Danish W. Indies. 117 parts of the principal filaments (Fig. 125). As mentioned above, the large cells in the principal filaments lack a dense cortical layer, yet an attempt at this is present, as from the basal cells in the ramuli some very ramified filaments grow out and bend themselves round the large cells in the principal filaments (Fig. 125). The cells in the principal filaments are about 225 [i broad and about four times as long. The ramuli are more rcjbust than those in Wrangelia peni- cillata which is t
. Dansk botanisk arkiv. Plants; Plants -- Denmark. F. Borgesen: Rhodophyceæ of the Danish W. Indies. 117 parts of the principal filaments (Fig. 125). As mentioned above, the large cells in the principal filaments lack a dense cortical layer, yet an attempt at this is present, as from the basal cells in the ramuli some very ramified filaments grow out and bend themselves round the large cells in the principal filaments (Fig. 125). The cells in the principal filaments are about 225 [i broad and about four times as long. The ramuli are more rcjbust than those in Wrangelia peni- cillata which is the natural outcome of the littoral occurrence of this alga; the single cells of the ramuli are proportionally short and broad, the fila- ments become evenly narrower towards the apex and end with a short, acute, conical cell (Fig. 126). In this species tetraspores only were found (Fig. 126). Like the tetrasporangia in Wrangelia penicillata they are terminally placed upon the ra- muli and are sur- rounded by short fi- laments more closely pressed to the tetra- sporangia than in Wrangelia penicillata. They are tetrahedrally divided and their diameter reaches about 60 p. In referring the Wrangelia plebeja of J. Agardh to Montagne's species I make this statement upon specimens determined by Agardh and collected at St. Croix by Ørsted. Certainly the description of Montagne is not especially exhaustive but his figures are of much help. This species has been found at St. Thomas: In several places in the harbour and in Store Nordsidebugt. At St. Croix it is as mentioned above collected by Ørsted. Geogr. Distrib.: West Indies. Canary Fig. 127. Wrangelia bicuspidata nov. spec. Habit of a plant. (About natural size).. 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 b
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