A text-book of mycology and plant pathology . Fig. 96.—Fruit-body of Calvatia cyalhiformis. (Photo, by W. H. Walmsley.) The largest puff-balls are included in the genus Calvatia (Fig. 96),which differs from Lycoperdon in the absence of an apical mouth anda regular dehiscence. The fruit bodies are globose, or top-shaped, aris-ing on the surface of the ground from subterranean, cord-like cyathiformis (Fig. 96) which is edible, if eaten when white in-side, grows in open grassy fields and lawns and reaches a diameter ofthree to six inches. Calvatia gigantea, the giant puff-ball, gr
A text-book of mycology and plant pathology . Fig. 96.—Fruit-body of Calvatia cyalhiformis. (Photo, by W. H. Walmsley.) The largest puff-balls are included in the genus Calvatia (Fig. 96),which differs from Lycoperdon in the absence of an apical mouth anda regular dehiscence. The fruit bodies are globose, or top-shaped, aris-ing on the surface of the ground from subterranean, cord-like cyathiformis (Fig. 96) which is edible, if eaten when white in-side, grows in open grassy fields and lawns and reaches a diameter ofthree to six inches. Calvatia gigantea, the giant puff-ball, grows inpastures and meadows. Usually the fruit bodies are ten to twentyinches in diameter and even larger. The genus Bovista has a fragile MUSHROOMS AND TOADSTOOLS 243 exoperidium, and in the absence of a sterile base and the fact that thefruit body separates easily from the place of attachment it is distin-guished from Lycoperdon. Because they are readily detached and. Fig. 97.—Specimen oi Geaster fornicatus from Carleton Rea, England. {After Lloyd,J. U., and , Bull. 5, Lloyd Library, June, 1902, Mycological Series No. 2.) readily blown about, they are called tumblers. Catastoma has anouter peridium which splits by a circular line of cleavage, so that theupper part is dislodged carrying along with it the inner peridium which 244 MYCOLOGY opens by a mouth that is situated at the actual base of the plant as itgrows. The lower part remains as a saucer-shaped body in the capillitium is present. Catastoma circiimscissum is the common species. The earth stars are included in the genus Geaster, where the peridiumconsists of three persistent coats, the two outer adhere and split intoleathery, stellate divisions exposing the parchment-like inner peridium,which opens by an apical pore (Fig. 97). It has a columella. The sporesare dark brown and mixed with the simple capillitial threads, Geasterhygrometricus is the common species. It grows in sandy
Size: 1433px × 1744px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1910, bookidtextbook, booksubjectfungi
