. The essentials of botany. Botany. 140 ^OtAl^f. fungus which protrude through the epidermis of the liost. In the Mildews (species of Peronospora) these branches. Fio. 66.—Showing tips of two conidia-beaiing branches of Potato-mildew (Peronospora infestans). Highly magnified. find their way through the hreathing-pores, and bear their spores singly upon lateral branchlets (Fig. 66); in the White Rusts (species of Cystopus) the conidia-bearing branches collect under the epidermis and rupture it. Here the coni- dia are borne in chains or bead-like rows (Fig. 67). 292. In some species the conidia
. The essentials of botany. Botany. 140 ^OtAl^f. fungus which protrude through the epidermis of the liost. In the Mildews (species of Peronospora) these branches. Fio. 66.—Showing tips of two conidia-beaiing branches of Potato-mildew (Peronospora infestans). Highly magnified. find their way through the hreathing-pores, and bear their spores singly upon lateral branchlets (Fig. 66); in the White Rusts (species of Cystopus) the conidia-bearing branches collect under the epidermis and rupture it. Here the coni- dia are borne in chains or bead-like rows (Fig. 67). 292. In some species the conidia germi- nate by forming a fube; in others they divide internally and finally emit many zoospores. The latter eventually protrude a tube and bore their way into the cells of Fio. the host (Fig. 68, « to i). the tips of three com- rrw. i j a- i dia-bearine branches 293. ihe sexual reproduction always of the White Rust of , . , . Peppergrass. Magni- takes place in the intercellular spaces oi fled 400 times. , ,. _ , , , „ , . , the host. Lateral branches of two kinds appear upon the hyphse; those of one kind (the young. 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 Bessey, Charles E. (Charles Edwin), 1845-1915. New York, Holt
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectbotany, bookyear1884
