. Botany for academies and colleges: consisting of plant development and structure from seaweed to clematis. Botany; 1889. c, single the Hand of God; they use it as a remedy for intermittent Fig. 47.—A, pollen-grain of Cypress (Cupresms sem- pervirem), sbowing the extiiie and intine, and the rudi- mentary protliallus as a small cell cut off at one end from the main cell. B, pollen-grain of Ceratozninia longifoHa emitting its intine in the form of a pollen-tube, p«, which escapes through the ruptured extine e; y, rudimentary prothallus. C, diagram of vert section of ovule of Pinue mjlv
. Botany for academies and colleges: consisting of plant development and structure from seaweed to clematis. Botany; 1889. c, single the Hand of God; they use it as a remedy for intermittent Fig. 47.—A, pollen-grain of Cypress (Cupresms sem- pervirem), sbowing the extiiie and intine, and the rudi- mentary protliallus as a small cell cut off at one end from the main cell. B, pollen-grain of Ceratozninia longifoHa emitting its intine in the form of a pollen-tube, p«, which escapes through the ruptured extine e; y, rudimentary prothallus. C, diagram of vert section of ovule of Pinue mjlvesiris: i, integument, or testa; w, micropyle; &, nucleus; e, embryo-sac; c, c, embryonic vesicles; h, neclt of one of them; j), ex- tine of poUeu-grains; s, pollen-tubes. D, embryo of ripe sd. of Cedar of Lebanon (C lAhani), half of sd. cut away, showing perisperm and testa. E, emb. of Scotch Pine (P. sylveBti-is), sd. attached. F, same, with plumule. E and P sprouting. 77. Fertilization of Gymnosperms is verysimple. There. 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 Ketchum, Annie Chambers, 1824-1904. Philadelphia, J. B. Lippincott company
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Keywords: ., bookcentury1800, bookdecade1880, bookpublisher, booksubjectbotany
