. Botanisk tidsskrift. Plants; Plants -- Denmark. 361 The chromatophore of Urospora mirabilis ^) is by Woltke (Urospora p. 68) described as „eine einfache Scheibe", by Wille (Engler u. Prantl: Die natiirlichen Pflanzenfamilien I, 2, p. 115) as „eine wandstJindige, durchbrochene Platte", and by Kjellnian (Blasiophysa ocli Urospora p. 12) as sack-like and perforated with small, angular holes. The figures given by Woltke ( Tab. 1) and Wille ( p. 116 fig. ) seem fully to agree with Kjellman's more accurate description of the chromatophore. Borgesen (Fter. alg. p. 502) points
. Botanisk tidsskrift. Plants; Plants -- Denmark. 361 The chromatophore of Urospora mirabilis ^) is by Woltke (Urospora p. 68) described as „eine einfache Scheibe", by Wille (Engler u. Prantl: Die natiirlichen Pflanzenfamilien I, 2, p. 115) as „eine wandstJindige, durchbrochene Platte", and by Kjellnian (Blasiophysa ocli Urospora p. 12) as sack-like and perforated with small, angular holes. The figures given by Woltke ( Tab. 1) and Wille ( p. 116 fig. ) seem fully to agree with Kjellman's more accurate description of the chromatophore. Borgesen (Fter. alg. p. 502) points moreover out that the chromatophore „in older, more developed cells ... is richly perforated and almost quite reticular". The Icelandic specimens contain one chromatophore in each cell of a shape resembling a sack with a longitudinal opening. In the shorter or younger cells it is perforated with small, angular or round holes fully agreeing with Kjellman's description (1. c.) and Wille's figure (1. c. fig. 77, A). In ol- der cells, and especially in the elongated cells, the chromatophore is distinct- ly reticular, often with great meshes( 1 Oa). Regarding the shape and structure of the chroma- tophore , U. mirabilis seems thus essentially to agree with U. Worm- skioldii, as the lastnamed species has, as pointed out by Borgesen (Fser. alg. p. 502), the chromatophores of the younger cells perforated with numerous, small holes, while in older cells they are distinctly reticular. The same is the case with Acrosiphonia (see later p. 368) , Gladophora and several other species with perforated chrom- atophores, viz. the meshes of the chromatophores in younger cells become larger as the size of the cells 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 Botaniske forening i Kbenhavn; Bota
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