. A textbook of botany for colleges and universities ... Botany. would seem to be a ves- After TuLASNE. tigial one. The other structure produced by the my- celium in the barberry leaf is the aecidium or clusterciip. The aecidia usually appear in groups on the lower leaf surface, each opening upon the surface as a cup containing numer- ous simple sporophores bearing rows of spores, „,, , , the aecidiospores (fig. 196). The scattered Fig. 195. — Wheal rust: a r \ o y / spermogonium (producing aecidiospores that fall upon young wheat spermatia) arising from the plants germinate, the host is penet
. A textbook of botany for colleges and universities ... Botany. would seem to be a ves- After TuLASNE. tigial one. The other structure produced by the my- celium in the barberry leaf is the aecidium or clusterciip. The aecidia usually appear in groups on the lower leaf surface, each opening upon the surface as a cup containing numer- ous simple sporophores bearing rows of spores, „,, , , the aecidiospores (fig. 196). The scattered Fig. 195. — Wheal rust: a r \ o y / spermogonium (producing aecidiospores that fall upon young wheat spermatia) arising from the plants germinate, the host is penetrated, and mycelium of the barberry leaf. j^ Jiu^j Jg produced that begins to — After Chamberlain. j f a uredospores. Polymorphism. — In this life history the fungus passes through three distinct phases (the parasitic mycelium bearing uredospores and. 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 Coulter, John Merle, 1851-1928; Barnes, Charles Reid, 1858-1910, joint author; Cowles, Henry Chandler, 1869- joint author. New York, Cincinnati [etc] American book company
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectbotany, bookyear1910
