Fungi, Ascomycetes, Ustilaginales, Uredinales . )- ex-posed (fig. 7). To the closedor flask-shaped forms theterm perithecium is ap-plied, the cup and its vari-ants are known as apo-thecia. Inthe simplerasco-carps the asci are irregu-larly scattered; in the apo-thecia and flask-shaped perithecia they are regularly arranged, forming amore or less parallel series and intermingled with paraphyses. The Paraphyses. The paraphyses of the Ascomycetes are slender hairs,of about the same length as the asci; they usually develop earlier than thelatter, and have a protective and possibly a nutritive funct
Fungi, Ascomycetes, Ustilaginales, Uredinales . )- ex-posed (fig. 7). To the closedor flask-shaped forms theterm perithecium is ap-plied, the cup and its vari-ants are known as apo-thecia. Inthe simplerasco-carps the asci are irregu-larly scattered; in the apo-thecia and flask-shaped perithecia they are regularly arranged, forming amore or less parallel series and intermingled with paraphyses. The Paraphyses. The paraphyses of the Ascomycetes are slender hairs,of about the same length as the asci; they usually develop earlier than thelatter, and have a protective and possibly a nutritive function ; in thesimpler ascocarps their place is taken by the inner layers of the paraphyses are often clavate or club-shaped in form with a ratherswollen tip (fig. 5), sometimes cylindrical (fig. 4) or pointed (lanceolate),or sometimes with curled or twisted ends; they may be simple or branched,septate or continuous, hyaline or provided with coloured contents ; orangered granules are common and often give a brilliant tinge to the whole. Fig. 6. Sort/aria sp.; ascocarp in longitudinal sectionshowing asci, paraphyses and periphyses; X400. II] ASCOMYCETES 39 e~-
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Keywords: ., bookcentury1900, bookdecade1920, booksubjectfungi, bookyear1922
