. Dansk botanisk arkiv. Plants; Plants -- Denmark. F. Børgesen: Rhodophyceæ of the Danish W. Indies. 357 Subfam. 2. Tylocarpeæ. Gymnogongrus Mart. 1. Gymnogongrus tenuis J. Ag. J. Agardh, in Act. Holm., 1849, p. 88; Spec. Alg., vol. II, p. 319; Epicr., p. 211. Chondrus tenuis in Kützing, Spec. Alg., p. ; Kltzing, Tab. Phycol., vol. 17, pi. 52. The specimens form dense bushes upto 5—6 cms height. The thallus is of a firm and cartilaginous consistency; it is flat and repeat- edly forked (Fig. 352). From a transverse section of the thallus it appears that it con- sists of a parenchymati
. Dansk botanisk arkiv. Plants; Plants -- Denmark. F. Børgesen: Rhodophyceæ of the Danish W. Indies. 357 Subfam. 2. Tylocarpeæ. Gymnogongrus Mart. 1. Gymnogongrus tenuis J. Ag. J. Agardh, in Act. Holm., 1849, p. 88; Spec. Alg., vol. II, p. 319; Epicr., p. 211. Chondrus tenuis in Kützing, Spec. Alg., p. ; Kltzing, Tab. Phycol., vol. 17, pi. 52. The specimens form dense bushes upto 5—6 cms height. The thallus is of a firm and cartilaginous consistency; it is flat and repeat- edly forked (Fig. 352). From a transverse section of the thallus it appears that it con- sists of a parenchymatic tissue, whose cells are largest in the middle (about 40—50 ja lat.) smaller outwards. The cortical layer consists of small cells with thick walls placed in rows forming together a very firm tissue. It is surrounded by a rather thick cuticle. In some of the specimens, collected in March, cystocarps were found forming proportionately large, flat, roundish-oval projecting discs on the one side of the thallus. The plant is a littoral alga. It was growing on stone-quays etc. together with Grateloupia, Ulva etc. near the surface of the sea in places where the waves constantly dash the stones and where the water was much polluted. St. Thomas: The harbour of Charlotte Amalia. Geogr. Distrib.: West Indies, Mexico, La Fig. 352. Gymnogongrus tenuis J. Ag. Part of the thallus. (About -li).. 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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