The New Encyclopædia BritannicaEncyclopædia Britannica, 1983 - Encyclopedias and dictionaries |
From inside the book
Results 1-3 of 9
Page 244
... sporangia . Indusia are papery tentlike structures that cover clusters of sporangia . Drawing by M. Pahl from ( top ) F.C. Steward , About Plants : Topics in Plant Biology ( 1966 ) ; Addison - Wesley , Reading , Mass . and ( bottom ...
... sporangia . Indusia are papery tentlike structures that cover clusters of sporangia . Drawing by M. Pahl from ( top ) F.C. Steward , About Plants : Topics in Plant Biology ( 1966 ) ; Addison - Wesley , Reading , Mass . and ( bottom ...
Page 246
... Sporangia solitary or variously soriate ( in clusters ) and borne upon the leaf blades or their modified parts , marginally or abaxially ( on the under surface , or surface facing away from the central axis of the plant ) . Stems ...
... Sporangia solitary or variously soriate ( in clusters ) and borne upon the leaf blades or their modified parts , marginally or abaxially ( on the under surface , or surface facing away from the central axis of the plant ) . Stems ...
Page 247
... sporangia attached laterally in two rows , produced on specialized lobes of the blade ; spores tetrahedral . One genera ( Lygodium ) with 40 species . Subfamily Schizaeaoideae . Leaves long - petioled , often rather grasslike , simple ...
... sporangia attached laterally in two rows , produced on specialized lobes of the blade ; spores tetrahedral . One genera ( Lygodium ) with 40 species . Subfamily Schizaeaoideae . Leaves long - petioled , often rather grasslike , simple ...
Contents
would become the principal reserve asset while gold | 36 |
Excretion the elimination of the waste products of | 50 |
Volumes | 431 |
Copyright | |
2 other sections not shown
Other editions - View all
Common terms and phrases
acid activity amount animals appears become blood body called carried cause cells century changes chemical close common complete consists containing continuous countries depends direction early effect evidence evolution example existence farm federal ferns fibres field Figure fire function gametophyte give groups important increase interest Italy kidney known later leaves less light lines living major marriage material means ment method move movements muscle natural normal obtained occur organs origin percent period person plants position possible present pressure problems produced properties protection reduced remain renal response result retina selection similar social species structure supply surface temperature tend tion types United urine usually various vary