. Class-book of botany : being outlines of the structure, physiology and classification of plants : with a flora of the United States and Canada . Botany; Botany; Botany. CHAPTBE XV. (THE CETPTOGAMIA OB FLOWEKLESS PLANTS. 621. Distinction of pabts. In the lowest of the Cryptogamic tribes the organs of vege- tation and of reproduction are the same. Each cell in the structure grows, nourishes, multiplies. 435, ATreeFerâ(ofthe island ?g^"', '"^ *^« ''^^^ ^« ^""^ « gl-^dual specializa- ofjava), 40 feet in height, tiou ot Organs, and in the higher tribes, as in A Fern, Polypo
. Class-book of botany : being outlines of the structure, physiology and classification of plants : with a flora of the United States and Canada . Botany; Botany; Botany. CHAPTBE XV. (THE CETPTOGAMIA OB FLOWEKLESS PLANTS. 621. Distinction of pabts. In the lowest of the Cryptogamic tribes the organs of vege- tation and of reproduction are the same. Each cell in the structure grows, nourishes, multiplies. 435, ATreeFerâ(ofthe island ?g^"', '"^ *^« ''^^^ ^« ^""^ « gl-^dual specializa- ofjava), 40 feet in height, tiou ot Organs, and in the higher tribes, as in A Fern, Polypodinm Tulgare. 4S6, Its frond. 4S7, Lobe of the frond en- larged, showing the sori, 4SS, One of the sori (mag- nified) consisting of many sporangi. 489, One spor- ange (farther magnified) bursting and discharging the spores. 490, A spore. 491, Spores beginning to germinate ; and 492, 493, producing the protkallus â with rootlets. At a ap- pear the anth^ridia and at 7> the archegones on the surface of the prothallns. 494, Anthcridium. 496, One of its cells. 496, The same burst; and 497, the spermatozoid escaped. These float about, and some of them at length enter, 498, the archegone, fertilizing, and at length prodnciDE. 499. the young Pern. 500, Sorns of As- pidiummarEinale, covered â with the indiMivm. 601, Same, side 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 Wood, Alphonso, 1810-1881. New York : A. S. Barnes & Burr
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Keywords: ., bookcentury1800, bookdecade1860, bookpublisher, booksubjectbotany
