The New Encyclopædia BritannicaEncyclopædia Britannica, 1983 - Encyclopedias and dictionaries |
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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 = 22 , Pteris ... ferns ( pteridosperms ) may also have been the 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 = 22 , Pteris ... ferns ( pteridosperms ) may also have been the 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 ...
Contents
would become the principal reserve asset while gold | 36 |
Excretion the elimination of the waste products of | 50 |
Volumes | 431 |
Copyright | |
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