. An introduction to the structure and reproduction of plants. Plant anatomy; Plants. 258 LICHENS of a shingic-bcach, are due to various Lichens { Rhizocarpon confervoides, Fig. 141, C), which are here the iirst colonisers. The shape of the thallus is very diverse, and, as a general rule, almost entirely determined by the Fungus. It most com- monly takes the form of fiat, lobed expansions which are often. Fig. 141.—Various common Lichens. A, Usnea barbata. B, Partnelia physodes, on twig. C, Rhizocarpon confervoides, on pebble from shingle- beach at Pevensey. D, Xantlioria parietina (showin
. An introduction to the structure and reproduction of plants. Plant anatomy; Plants. 258 LICHENS of a shingic-bcach, are due to various Lichens { Rhizocarpon confervoides, Fig. 141, C), which are here the iirst colonisers. The shape of the thallus is very diverse, and, as a general rule, almost entirely determined by the Fungus. It most com- monly takes the form of fiat, lobed expansions which are often. Fig. 141.—Various common Lichens. A, Usnea barbata. B, Partnelia physodes, on twig. C, Rhizocarpon confervoides, on pebble from shingle- beach at Pevensey. D, Xantlioria parietina (showing numerous apothccia). E, Cladonia sp., showing the upgrowths on whiclr the apfjthccia arc borne. almost circular [ Parmdia, Xanthoria, Fig. 141, D). Other fre- quent types are those exhibiting repeated branching (Fig. 141, B) ; in such the segments may be upright { Iceland Moss, Cctraria islandica, Fig. 143) or hanging { Old Man's Beard, Usnea, Fig. 141, A). In some cases the thaUus is highly gelatinous, so that it is much more conspicuous in wet than in dry weather {eg Collema).. 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 Fritsch, Felix Eugene, 1879-; Salisbury, E. J. (Edward James), Sir, b. 1886. London, G. Bell and sons ltd.
Size: 1560px × 1602px
Photo credit: © The Book Worm / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1920, booksubjectpl, booksubjectplants
