. Dansk botanisk arkiv. Plants; Plants -- Denmark. 2. Galaxaura subverticillata Kjellm. Kjellman, F. R., Floridé-slagtet Galaxaura, p. 48. This species has been described from specimens which Ørsted col- lected at St. Croix and sent to Are- SCHOUG. In the Botanical Museum, Copenhagen, some more specimens of Ørsted's from St. Croix are to be found which quite agree with the specimens determined by Kjellman. The specimens I have collected (compare Fig. 97) seem to agree very well with the original examples. In this species both long and short assi- milating filaments are present and the most str
. Dansk botanisk arkiv. Plants; Plants -- Denmark. 2. Galaxaura subverticillata Kjellm. Kjellman, F. R., Floridé-slagtet Galaxaura, p. 48. This species has been described from specimens which Ørsted col- lected at St. Croix and sent to Are- SCHOUG. In the Botanical Museum, Copenhagen, some more specimens of Ørsted's from St. Croix are to be found which quite agree with the specimens determined by Kjellman. The specimens I have collected (compare Fig. 97) seem to agree very well with the original examples. In this species both long and short assi- milating filaments are present and the most striking character is the verticillate arrangement of the fila- ments. This annular arrangement is most clearly present in the young parts of the thallus, in the older ones the long hairs occur in a more scattered manner over the whole sur- face and some specimens are even found in which the annular arrange- ment is much reduced, the specimens having an almost even but rather open covering of hairs over the whole sur- face. Kjellman explains this fact by considering that the short hairs later on grow out more or less into long ones. The surface of the thallus, espe- cially in that of the upper young ends, is rugose and often clearly annulated. The internodes are nearly cylin- drical, mostly constricted at the base, of variable length but usually short seldom exceeding 1 cm. The colour of my specimens was greyish olive-green with a reddish tinge especially in the younger parts of the thahus. A transverse section shows the medullary tissue to consist of the usual, rather thick walled, cylindric cells woven together. The Fig. 96. Galaxaura comans Kjellm. a, basal parts of as- similating filaments with the supporting cell, b, base of a ramified filament. (About 150 :1).. Fig. 97. Galaxaura suhver- ticillata Kjellm. Part of the thallus. (About 1,5 :1).. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - colora
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