. A popular history of British lichens [microform] : comprising an account of their structure, reproduction, uses, distribution, and classification. Lichens; Lichens. 316. POPULAR HISTORY OF LICHENS. Genus IT. SCUTULA, Tul. Gen. Char. Apothecia superficial on the thallus of various fo- liaceous lichens, scutiform or discoid, and iramarginate. Thec^ clavate, G-S-spored. Spores ovate-oblong, obtuse p^ â : \. ^iirui^le, pale, full of homogeneous oil. Spermogones globost minute^ superficial, with a simple cavity. Spermatia linear, very slender,' short, curved, generated acrogenously from simple, o
. A popular history of British lichens [microform] : comprising an account of their structure, reproduction, uses, distribution, and classification. Lichens; Lichens. 316. POPULAR HISTORY OF LICHENS. Genus IT. SCUTULA, Tul. Gen. Char. Apothecia superficial on the thallus of various fo- liaceous lichens, scutiform or discoid, and iramarginate. Thec^ clavate, G-S-spored. Spores ovate-oblong, obtuse p^ â : \. ^iirui^le, pale, full of homogeneous oil. Spermogones globost minute^ superficial, with a simple cavity. Spermatia linear, very slender,' short, curved, generated acrogenously from simple, oblong-acute sterigmata. Pycnides globose, superficial, somewhat deplanate at apex, unilocular, thick-walled. Sterigmata short and simple. Stylospores oblong-cylindrical, obtuse at ends, curved, simple or rarely uniseptate. (Name from scutula, a little saucer, in allu- sion to the form of the apothecia.) Only one species is described by Tulasne, viz.â 1. ScuTULA Wallrothii (named in honour of M. Wallroth, a celebrated German cryptogamist). Apothecia small, disciform, flattish. Spores unilocular, ovate or ellip. soid, pale. Spermogones superficial, very minute, globose. Spermatia linear, curved, very delicate. Pycnides in form and site are similar to the spermogones; in structure they resemble those of the genus Ahrothallus, Sterigmata linear- conical, simple. Stylospores oblong, straight or slightly curved, simple, rarely bilocular. Tulasne mentions its occurring on various specimens of Peltigera canina from Germany and 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 Lindsay, W. Lauder, (William Lauder), 1829-1880. London : L. Reeve
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Keywords: ., bookcentury1800, bookdecade1850, booksubjectlichens, bookyear1856
