Fungi, Ascomycetes, Ustilaginales, Uredinales . tends. Development has been studied only in species of Helvetia where thefruit arises as a tuft of branching, septate hyphae, and no archicarp hasbeen observed. In //. elastiea, young ascophores, about 05 mm. in diameter, show nosigns of fertile hyphae. A membrane of interwoven filaments encloses thewhole fruit body, and below this a palisade of club-shaped hyphae is differ-entiated. As growth proceeds the membrane becomes broken, and thepalisade increases in regularity, forming the boundary of the fructificationexcept where, at the apex, the par
Fungi, Ascomycetes, Ustilaginales, Uredinales . tends. Development has been studied only in species of Helvetia where thefruit arises as a tuft of branching, septate hyphae, and no archicarp hasbeen observed. In //. elastiea, young ascophores, about 05 mm. in diameter, show nosigns of fertile hyphae. A membrane of interwoven filaments encloses thewhole fruit body, and below this a palisade of club-shaped hyphae is differ-entiated. As growth proceeds the membrane becomes broken, and thepalisade increases in regularity, forming the boundary of the fructificationexcept where, at the apex, the paraphyses are growing up. Later, as theseincrease in number, the ascogenous hyphae appear among them, andnumerous asci are formed. In //. crispa the later stages of development are very similar to thosein //. elastiea. Here nuclear fusions have been observed in the young o 130 DISCOMYCETES [CH. ascogenous hyphae, replacing, as in Humaria rutilans, the obsolete sexualfusions, and preceding the fusions in the asci. Carruthers has studied the.
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Keywords: ., bookcentury1900, bookdecade1920, booksubjectfungi, bookyear1922
