Elementary botany . nodal cell of leaf; u, intermediate downward from the nodes at thecell between w and the basal-node cell of the antheridium; /, cavity of the internode base of the whorl of lateral shoots,of the leaf; br, cortical cells of the leaf. oofih Ti QPYliai nTO!in(. nr~AX about 33; 5X240. (After Sachs.) tf8bD lhe sexual organs are situated at the nodes of thewhorled lateral shoots, and consist of antheridia and carpogonia. Most ofthe plants are monoecious, and both antheridia and carpogonia are oftenattached to the same node, the antheridium projecting downward while thecarpogonium
Elementary botany . nodal cell of leaf; u, intermediate downward from the nodes at thecell between w and the basal-node cell of the antheridium; /, cavity of the internode base of the whorl of lateral shoots,of the leaf; br, cortical cells of the leaf. oofih Ti QPYliai nTO!in(. nr~AX about 33; 5X240. (After Sachs.) tf8bD lhe sexual organs are situated at the nodes of thewhorled lateral shoots, and consist of antheridia and carpogonia. Most ofthe plants are monoecious, and both antheridia and carpogonia are oftenattached to the same node, the antheridium projecting downward while thecarpogonium is more or less ascending. The sexual organs are visibleto the unaided eye. The antheridium is a globose red body of an exceed-ingly complicated structure. The sperms are borne in several very longcoiled slender threads which are divided transversely into numerous carpogonium is oval or elliptical in outline, the wall of which is com-posed of several closely coiled spiral threads enclosing the large Fig. organs of Chara central portion of a leaf, b, with an anther- CHAPTER XIX. FUNGI : MUCOR AND SAPROLEGNIA. Mucor. 387. In the chapter on growth, and in our study of proto-plasm, we have become familiar with the vegetative condition ofmucor. We now wish to learn how the plant multiplies and re-produces itself. For this study we may take one of the one of several species will answer. This plant may be grownby placing partially decayed fruits, lemons, or oranges, from whichthe greater part of the juice has been removed, in a moist cham-ber • or often it occurs on animal excrement when placed undersimilar conditions. In growing the mucor in this way we arelikely to obtain Mucor mucedo, or another plant sometimesknown as Mucor stolonifer, or Rhizopus nigricans, which is illus-trated in fig. 191. This latter one is sometimes very injurious tostored fruits or vegetables, especially sweet potatoes or rutaba-gas. Fig. 190 is from
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