. Fio. 233.—Gi/mnosporangiaiii sahitiac in the form of liotstcUa. canccllata on leaves of Pear. A few twigs showing the abundance of aecidia over the whole tree. (v. Tubeuf phot.) isolated crystals but as masses. Cork-formation was suspended in Wakker's case, while in Fentzling's a partial formation of cork was distinguishable beneath the epidermis. The increased thickness of diseased leaves- is due principally to multiplication of the spongy parenchyma, the upper layers of which frequently become more or less palisade-like. When pycnidia (spermogonia) are formed on tlic upper leaf-surface, th

---

. Fio. 233.—Gi/mnosporangiaiii sahitiac in the form of liotstcUa. canccllata on leaves of Pear. A few twigs showing the abundance of aecidia over the whole tree. (v. Tubeuf phot.) isolated crystals but as masses. Cork-formation was suspended in Wakker's case, while in Fentzling's a partial formation of cork was distinguishable beneath the epidermis. The increased thickness of diseased leaves- is due principally to multiplication of the spongy parenchyma, the upper layers of which frequently become more or less palisade-like. When pycnidia (spermogonia) are formed on tlic upper leaf-surface, the palisade parenchyma ^ Fentzling (lor. cit.) and Peglion (Rivista di Patologia Vegetale, ii.), also describe these alterations.

---

Size: 2355px × 2123px
Photo credit: © The Bookworm Collection / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: ., bookcentury1800, bookdecade1890, bookpublisherl, booksubjectfungi