The Geological History of PlantsK. Paul, Trench, 1888 - 290 pagini |
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Pagina 7
... woody stems , and seeds with two seed - leaves . Most of the ordinary forest- trees of temperate climates belong to this group . On referring to the geological table , it will be seen that there is a certain rough correspondence between ...
... woody stems , and seeds with two seed - leaves . Most of the ordinary forest- trees of temperate climates belong to this group . On referring to the geological table , it will be seen that there is a certain rough correspondence between ...
Pagina 15
... woody or vascular tissue but it cannot with certainty be affirmed that such tissu * " Acadian Geology , " p . 535. In calcified specimens the structu remain in the graphite after decalcification by an acid . OF PLANTS . LAURENTIAN AND ...
... woody or vascular tissue but it cannot with certainty be affirmed that such tissu * " Acadian Geology , " p . 535. In calcified specimens the structu remain in the graphite after decalcification by an acid . OF PLANTS . LAURENTIAN AND ...
Pagina 18
... woody and corky tissues , had already been introduced upon the earth . It has been well said that no amount of study of inorganic nature would ever have enabled any one to anticipate the possibility of the construction of an apparatus ...
... woody and corky tissues , had already been introduced upon the earth . It has been well said that no amount of study of inorganic nature would ever have enabled any one to anticipate the possibility of the construction of an apparatus ...
Pagina 59
... woody ed in con- and that . n cellular hese have the prob- this sub- jects the he order which I pores of modern species which I have had an opportunity to examine , Salvinia natans of Europe perhaps presents the closest resemblance . In ...
... woody ed in con- and that . n cellular hese have the prob- this sub- jects the he order which I pores of modern species which I have had an opportunity to examine , Salvinia natans of Europe perhaps presents the closest resemblance . In ...
Pagina 65
... woody cells . Fruc- tification consisting of naked oval spore- cases , borne usually in pairs on slender , curved pedicels , either lateral or terminal . This species was fully described by me in the papers referred to above , from ...
... woody cells . Fruc- tification consisting of naked oval spore- cases , borne usually in pairs on slender , curved pedicels , either lateral or terminal . This species was fully described by me in the papers referred to above , from ...
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Termeni și expresii frecvente
acrogens aërial roots Algæ allied America appear arctic areoles bark beds belong bituminous branches Brongniart bundles Calamites Canada Carboniferous Caulopteris cells cellular character climate coal coal-formation conifers Cordaites cycads cylinder Dadoxylon Dawson Demy 8vo described Devonian diameter Eocene Erian Europe exogenous Fcap ferns flora formation forms fossil plants fronds fructification fruit Gaspé genera genus Geological Society graphite Greenland hemisphere Illustrations Journal Laramie Laurentian leaf-bases leaf-scars leaves Lepidodendron Lepidophloios Lesquereux limestone Lower Carboniferous Lycopods macrospores medullary rays Mesozoic Middle modern Nova Scotia occur outer Paleozoic period Permian petioles pines pinnate pinnules pith present probably Prof Psilophyton referred resemble Rhizocarps ribbed rocks sandstones scalariform scars Second Edition Sequoia shales Sigillaria Silurian similar Small crown 8vo species specimens Sphenophyllum Sporangites spore-cases spores sporocarps stems Sternbergia structure Tertiary thick Third Edition tion tissue tree-ferns trees trunks Upper Cretaceous vascular vegetable vols Williamson wood woody
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