The New Encyclopaedia Britannica, Volumes 1-10Encyclopaedia Britannica, 1974 - Reference [1] Propaedia: outline of knowledge and guide to the Britannica.--[2]-[11] Micropaedia: ready reference and index.--[12]-[30] Macropaedia: knowledge in depth. |
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Page 238
... ferns of an area may grow as epiphytes , or air plants , on the shaded lower trunks or in the crowns of trees , often on exposed boughs . A number of so - called epiphytic ferns are actually climbers that originate upon the ground and ...
... ferns of an area may grow as epiphytes , or air plants , on the shaded lower trunks or in the crowns of trees , often on exposed boughs . A number of so - called epiphytic ferns are actually climbers that originate upon the ground and ...
Page 245
... ferns tend to have high base or x numbers , ranging from approximately 20 to 70 , with the majority between 25 and 45. The familiar genus Osmunda , for example , has x ... ferns ( pteridosperms ) may also have been the immediate Fern 245.
... ferns tend to have high base or x numbers , ranging from approximately 20 to 70 , with the majority between 25 and 45. The familiar genus Osmunda , for example , has x ... ferns ( pteridosperms ) may also have been the immediate Fern 245.
Page 247
... ferns , lip ferns ) . Mainly small , xerophytic ( with adaptations to dry habitats ) ferns , the plants epipetric ( growing upon rocks ) or terrestrial and rigid ; leaves 1- to multipinnate ; veins mostly free . Adiantum , Cheilanthes ...
... ferns , lip ferns ) . Mainly small , xerophytic ( with adaptations to dry habitats ) ferns , the plants epipetric ( growing upon rocks ) or terrestrial and rigid ; leaves 1- to multipinnate ; veins mostly free . Adiantum , Cheilanthes ...
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The New Encyclopaedia Britannica, Volumes 1-10 Encyclopaedia Britannica Publishers, Inc. Staff No preview available - 1974 |
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