. Dansk botanisk arkiv. Plants; Plants -- Denmark. My specimens seem to agree quite well with those of Kjellman. In a transverse section of the thallus (Fig. 98) it is seen that the medullary layer consists of rather thin filaments woven between each other; they are of variable breath, their diameter being 12—16 fi thick or even more. The supporting cells at the periphery are mostly not much developed; they are irregularly 3—4-gonat (Figs. 99 and 100), up to 40/i in diameter. They carry each a single or more rarely two assimilating filaments, short or long. The short ones (Fig, 99 h, Fig. 100)
. Dansk botanisk arkiv. Plants; Plants -- Denmark. My specimens seem to agree quite well with those of Kjellman. In a transverse section of the thallus (Fig. 98) it is seen that the medullary layer consists of rather thin filaments woven between each other; they are of variable breath, their diameter being 12—16 fi thick or even more. The supporting cells at the periphery are mostly not much developed; they are irregularly 3—4-gonat (Figs. 99 and 100), up to 40/i in diameter. They carry each a single or more rarely two assimilating filaments, short or long. The short ones (Fig, 99 h, Fig. 100) mostly consist of three cells, someones only of two; the basal cells are large, oval, about 60—70// long and 40IX broad, the others smaller, the uppermost have only a diameter about 27 jx long. The basal cells in the long assimilating filaments (Fig. 99 a) have nearly the same size and shape. The breadth of the cells in the cylin- drical part of the filaments seem to vary somewhat, in one specimen 1 found the dia- meter to be about 16//, in another even 18//; Kjellman states the diameter to be 15 //. The length of the cells is often more than double the breadth. Regarding the habit of the plant the accompanying figure (Fig. 101) gives an idea. The plant is, as pointed out by Kjellman, large, about 16 cm high not much ramified with very long internodes and the branches spreading much and often somewhat recurved at the summits. It is evenly covered with hairs over the whole surface and of a reddish brown colour. This species has been found in deep water only down to a depth of about 20—30 meters. Fig. 99. Galaxaura flagellifonnis. a, ba- sal part of long as- similating hair, b, short a'ssimilating filaments, one with two cells, another with three. (About 15() : St. Jan: Off Hermitage and in several pla- ces in the sound between this island and St. Tho- mas. Geogr. Distrib. Florida, West Indies. Fig. 103. Galax- aura flagellifonnis Kjellm. Short assi- milating filame
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