. A textbook of botany for colleges and universities ... Botany. THALLOPHYTES 87 coming to the surface, after having broken through the epidermis. These basidia, each bearing four spores, arise directly from the mycelium, without any complex sporophore formation, differing in this respect from the following groups. (g) Thelephorales The sporophores of these forms appear on tree trunks as flat and tough leathery incrustations, the hymenium spreading over the smooth upper surface ; or as brackets raised above the substratum, the hymenium extending over the under surface; or as funnel-shaped bodi
. A textbook of botany for colleges and universities ... Botany. THALLOPHYTES 87 coming to the surface, after having broken through the epidermis. These basidia, each bearing four spores, arise directly from the mycelium, without any complex sporophore formation, differing in this respect from the following groups. (g) Thelephorales The sporophores of these forms appear on tree trunks as flat and tough leathery incrustations, the hymenium spreading over the smooth upper surface ; or as brackets raised above the substratum, the hymenium extending over the under surface; or as funnel-shaped bodies lined with the hymenium. The general char- acter of the sporophore distinguishes this group from the next; and the indefinite extent of the hymenium over the sporophore distinguishes both groups from those which follow. (h) Clavariales These are the coral fungi, with fleshy sporophores that often simulate branching coral in form, the hymenium covering the whole surface of the branches. There are also unbranched, club-shaped sporophores; but all are characteristically fleshy and hymenium-covered. ' (i) Agaricales This is by far the greatest group of fleshy fungi, containing most of the so-called mushrooms and toadstools. The complex sporophore is. Fig. 197-—Lepiola : a common edible mushroom. — After Coulter. definite in form, being differentiated into stipe and pileus (fig. 197), the latter having special surfaces for the hymenium. The prin- cipal families are as follows :. 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 Coulter, John Merle, 1851-1928; Barnes, Charles Reid, 1858-1910, joint author; Cowles, Henry Chandler, 1869- joint author. New York, Cincinnati [etc] American book company
Size: 2004px × 1247px
Photo credit: © The Book Worm / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1910, booksubjectbotany, bookyear1910
