. Fungi, ascomycetes, ustilaginales, uredinales. Fungi. Fig. 53. Hiimaria rutilans (Fr.) Sacc.; hymenial layer showing asci and paraphyses in various stages of develop- ment, X 400. Fig. 54. Mitrula laricina Mass.; development and ejection of biseriate spores, x 600. This typically discomycetous ascocarp or apothecium, which is well seen in the Pezizales, may be connected in one direction, through the Patel- lariaceae and their allies, with the fructifications of the Phacidiales, which are partly closed with a more or less stellate aperture, and with the characteristic- ally elongated fructifi
. Fungi, ascomycetes, ustilaginales, uredinales. Fungi. Fig. 53. Hiimaria rutilans (Fr.) Sacc.; hymenial layer showing asci and paraphyses in various stages of develop- ment, X 400. Fig. 54. Mitrula laricina Mass.; development and ejection of biseriate spores, x 600. This typically discomycetous ascocarp or apothecium, which is well seen in the Pezizales, may be connected in one direction, through the Patel- lariaceae and their allies, with the fructifications of the Phacidiales, which are partly closed with a more or less stellate aperture, and with the characteristic- ally elongated fructifications of the Hysteriales, which'open by a narrow slit. The apothecia of this last series show a close resemblance to the perithecia of certain Pyrenomycetes, and, as far as their mature structure is concerned, they may be placed as logically in one group as the other. Nor have we at present any information with regard to development which can decide the question. It remains even possible that the Hysteriales are a transition series and that some of the forms grouped among Discomycetes may have arisen from the Pyrenomycetes or vice versa. In another direction the typical apothecium, when very widely open suggests the reflexed ascocarp of Rhizina or Sphaerosoma and such a type. 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 Gwynne-Vaughan, Helen Charlotte Isabella (Fraser) Dame, 1879-. Cambridge [Eng] University Press
Size: 929px × 2690px
Photo credit: © The Book Worm / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1920, booksubjectfungi, bookyear1922
