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Grevillea, Vol. 21

Excerpt from Grevillea, Vol. 21: A Quarterly Record of Cryptogamic Botany and Its Literature; 1892-93 Among sand. Nile Valley. (Scott-Elliott.) Pileus 3-4 c.m. across when expanded, stem 10-15 c.m. long, 6-8 m.m. thick near the apex; the greater portion of the stem is buried in the sand, hence, in collecting the fungus, unless great care is taken, the volva is left behind. Allied to Montaguites Haussknechti, Rab., but distinguished by the obtuse pileus, presence of an ample volva, and larger spores. All the species belonging to the present genus grow in sandy, arid regions, and like Battarrea and other genera characteristic of similar localities, are at first enclosed in a stout volva, buried at a considerable depth in the sand, the hymenophore being elevated above the surface at maturity by the comparatively sudden increase in length of the stem. The Phalloideae exhibit a similar mode of development. The most pronounced morphological peculiarity presented by the members of the present genus is the entire absence of the flesh and cuticle of the pileus, the radiating gills being perfectly free from each other above. The volva is continuous with the apex of the stem, and, on the expansion of the gills, becomes split in an irregularly circumscissile manner near the apex, a small portion remaining attached to the apex of the stem, the greater portion remaining buried in the sand and sheathing the base of the stem. Montagnites is evidently allied to Coprinus where the flesh of the pileus is in many species exceedingly thin, although never entirely absent; the last-named genus differs in the deliquescent gills. Gyropliraginium, belonging to the Gastromycetes, is also allied to Montagnites, differing in the anastomosing gills. Secotium and Polyplocium are also allies. Pi, 182, Fig. 1, Montagnites Elliotti, nat. size; Fig. 2, young specimen of same showing the volva partially ruptured, nat. size; Fig. 3, section of same in the young stage, nat. size; Fig. 4, basidium with spores of same, x 400; Fig. 5, spores of same, x 400. Thwaitesiella. Mass. (u.g.) Resupinate, thin, rigid when dry; hymenium covered, except towards the margin, with thin raised plates that anastomose to form an irregular and interrupted honeycomb-like reticulation; the plates often radiate from a more or less central point, and are either continuous or broken up at intervals, and, along with the general surface, are densely covered with large, colourless, conical cystidia. Basidia tetrasporous; spores colourless, continuous. Hymenophore entirely resupinate, thin, resembling a Corticinnus or Peniophora in habit, but differing in having the surface traversed by thin vertical plates or ridges that anastomose to form an irregular network. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works."
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