. Outlines of botany for the high school laboratory and classroom (based on Gray's Lessons in botany) Prepared at the request of the Botanical Dept. of Harvard University. Botany; Botany. 200 CUYPTOGAMS. Section of tlie disk; a, an- theridiii. 465. Beproduction. — Upon the iqaper surface, over the axes of growth, or midribs, small ciip-sliaped structures called cujjiilcs {l^ig- 3o4, A, c) are found. From the bottom of each, several small lens-shaped bodies, composed of a con- siderable numljer of cells, arise ; they are known a^ gemmce (literally buds). When set free and scattered by rains and
. Outlines of botany for the high school laboratory and classroom (based on Gray's Lessons in botany) Prepared at the request of the Botanical Dept. of Harvard University. Botany; Botany. 200 CUYPTOGAMS. Section of tlie disk; a, an- theridiii. 465. Beproduction. — Upon the iqaper surface, over the axes of growth, or midribs, small ciip-sliaped structures called cujjiilcs {l^ig- 3o4, A, c) are found. From the bottom of each, several small lens-shaped bodies, composed of a con- siderable numljer of cells, arise ; they are known a^ gemmce (literally buds). When set free and scattered by rains and running' water they develop directly into new pilants. This is veijetative 'propagation much resembling the propa- gation of Jjilies by bull)lets and various other Flowering Plants by offsets. Gemmpe serve the same juirpose as zoospores in tlie Algte, namely, rapid multiplication. 466. A !. Aiitiieiidial liriLncli. , , '' -^ branches. In depressions of tlie scalloped disks stand the short-stalked antheridia. The Lii-ge cell of the anther- idinm (Fig. SoS) Ijecomes divided into a great jnimljcr of smaller cells, in each of wllicll a single 3:58. Antheridium: antUer- antherozoid is foimed. The an- '""''^^ f"^)- ^^'g^y magnified. therozoids are like those of Rock- — 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 Leavitt, Robert Greenleaf, 1865-1942; Gray, Asa, 1810-1888. Field, forest, and garden botany. New York, American Book Co
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectbotany, bookyear1901
