. Diseases of plants induced by cryptogamic parasites; introduction to the study of pathogenic Fungi, slime-Fungi, bacteria, & Algae. Plant diseases; Parasitic plants; Fungi. COLEOSPORIUM. 375 The aecidia are produced amongst the pycnidia on needles two or three years old; they have long white peridia and are known as Pcridermium ohlonfjisporinm Fuck. The aecidio- spores are yellow when mature, and originate in chains, which in the earlier stages of development consist of intermediate cells and spores, but the former gradually disappear (Fig 208). The spores have an average length of 30-5m
. Diseases of plants induced by cryptogamic parasites; introduction to the study of pathogenic Fungi, slime-Fungi, bacteria, & Algae. Plant diseases; Parasitic plants; Fungi. COLEOSPORIUM. 375 The aecidia are produced amongst the pycnidia on needles two or three years old; they have long white peridia and are known as Pcridermium ohlonfjisporinm Fuck. The aecidio- spores are yellow when mature, and originate in chains, which in the earlier stages of development consist of intermediate cells and spores, but the former gradually disappear (Fig 208). The spores have an average length of 30-5m and breadth of 4 l^A^' "\ â ('Vrj^ r. V\c,. 208.âPcridii-mmra /)in! (Colioyioriiim xni'iionin). Portion of an aecidiiim with basidia (6) giving off spores aud intermediate cells (d)\ outside the lieridiuni (p) other busidia {<) with club-shaped ends force up tliu epidermis; <', the thick mj'celiuni in the leaf-parenchyma. (After R. Hartig.) 20/x; in form they are generally longish-oval, few being round; the spore-coat is moderately thick. Aecidiospores are capable of immediate germination, and ]»roduce f//-(r^-patches on Smieno by June. The uredospores have an average length of 28'oai, and breadth Io-q/a; they are generally oblong, with a moderately thick coat Ijeset with spiny 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 Tubeuf, Karl, freiherr von, 1862-; Smith, William G. London, New York [etc. ] Longmans, Green & co.
Size: 3135px × 797px
Photo credit: © Paul Fearn / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1800, bookdecade1890, bookpublisherl, booksubjectfungi
