. Dansk botanisk arkiv. Plants; Plants -- Denmark. 226 Dansk Botanisk Arkiv, Bd. 3. Nr. 1. Subfam. 5. Crouanieæ. Antithamnion Nagl. 1, Aniithamnion antillanum nov. spec. Fronde cæspitosa, filis repentibus decumbentibusque, sub- strato adfixis, filis erectiusculis ramulis oppositis instructis. Ramuli alterne pinnati, pinnis pinnulas singulas (raro plures) in exteriori latere gerentibus; pinnulis plerumque ex binis-quaternis (raro pluribus) cellulis compositis, in superiori (interiori) latere glandula o vat a instructis. Tetrasporangia cruciatim divisa, e cellula basali pinnularum orta. The base
. Dansk botanisk arkiv. Plants; Plants -- Denmark. 226 Dansk Botanisk Arkiv, Bd. 3. Nr. 1. Subfam. 5. Crouanieæ. Antithamnion Nagl. 1, Aniithamnion antillanum nov. spec. Fronde cæspitosa, filis repentibus decumbentibusque, sub- strato adfixis, filis erectiusculis ramulis oppositis instructis. Ramuli alterne pinnati, pinnis pinnulas singulas (raro plures) in exteriori latere gerentibus; pinnulis plerumque ex binis-quaternis (raro pluribus) cellulis compositis, in superiori (interiori) latere glandula o vat a instructis. Tetrasporangia cruciatim divisa, e cellula basali pinnularum orta. The base of the plant consists of decumbent, creeping filaments, from which the erect filaments arise; often, too, the ends of these filaments grow upwards. The creeping filaments are fastened to the host plant by means of vigorous haptera (Fig. 213). The stalk of the hapteron is of variable length, often moniliform, the cells being oval of shape. They have thick walls; their length varies between 35— 65/^ or more, their breadth is about 20—25/^. The stalk ends in a flat, disk, consisting of coherent rhizoids. The erect filaments Fig. 214 are oppositely and distichously ramified and bear two kind of branches: some of them growing out as main stems like themselves, the others as short branchlets with limited growth. The cells in the main stem are nearly cylindrical, of variable size from 70—200// long and about 40—50/z broad. Fig. 213. Antithamnion antilla- jj^gbranchlets() arealternat- num nov. spec. Part of a de- . -^ , xi • V • i j cumbent filament from which mgly ramified, the pmnæ bemg placed downwards rhizoids, upwards distichously along both sides of the branchlets are issued. (About 85:1). k 1. 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 : D
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Keywords: ., bookcentury1900, bookcollectio, bookdecade1910, booksubjectplants
