The Evolution of Plant Life: Lower FormsMethuen & Company, 1891 - 242 pages |
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Page 59
... upper surface of leaf ; ep " , epidermis of under surface , bearing one stoma , st ; pl , palisade parenchyma , showing the cells placed end on to the upper surface of the leaf and closely packed ; sp , sp " , spongy parenchyma of lower ...
... upper surface of leaf ; ep " , epidermis of under surface , bearing one stoma , st ; pl , palisade parenchyma , showing the cells placed end on to the upper surface of the leaf and closely packed ; sp , sp " , spongy parenchyma of lower ...
Page 115
... upper portion becomes cup- shaped , and during the second year a long , narrow , dichotom- ously - branched receptacle springs from the depressed centre of the basal , cup - like portion . The branches of the recep- tacle are of nearly ...
... upper portion becomes cup- shaped , and during the second year a long , narrow , dichotom- ously - branched receptacle springs from the depressed centre of the basal , cup - like portion . The branches of the recep- tacle are of nearly ...
Page 115
... upper portion becomes cup- shaped , and during the second year a long , narrow , dichotom- ously - branched receptacle springs from the depressed centre of the basal , cup - like portion . The branches of the recep- tacle are of nearly ...
... upper portion becomes cup- shaped , and during the second year a long , narrow , dichotom- ously - branched receptacle springs from the depressed centre of the basal , cup - like portion . The branches of the recep- tacle are of nearly ...
Page 117
... upper part , nearest the mouth . The filaments formed in the female conceptacles remain unbranched ; the oogonium originates as a short filament , which is soon cut off from the parietal cell from which it springs by a transverse septum ...
... upper part , nearest the mouth . The filaments formed in the female conceptacles remain unbranched ; the oogonium originates as a short filament , which is soon cut off from the parietal cell from which it springs by a transverse septum ...
Page 121
... upper ones before it , so that the original apical cell continues to remain so throughout the entire life of the plant . We have now two frills , or free margins of cell - wall , at the base of the second cell , and as this process is ...
... upper ones before it , so that the original apical cell continues to remain so throughout the entire life of the plant . We have now two frills , or free margins of cell - wall , at the base of the second cell , and as this process is ...
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Common terms and phrases
alga algæ antheridia antherozoids apex apical cell aquatic archegonia asexual mode asexual reproductive axial basidia bearing become belonging branches called carbonic carpogonium cavity cell-division cell-wall cellulose chlorophyll cilia colour colourless conceptacles condition conjugation consists containing Crown 8vo Cryptogams daughter-cells differentiation divided division enclosed epidermis eventually ferns fertilization fibro-vascular bundles filaments flowering formation fungi fungus furnished genera genus germination give origin grow hymenium hypha hyphæ individual known latter leaf leaves lichens mass megaspores minute mode of reproduction mother-cell motile mycelium numerous oogonia oogonium oophore oosphere parasitic peridium Phanerogams phloem pileus plants Prantl present group produced prothallus protoplasm remains reproductive bodies resting-spores roots septa septum sexual mode sexual organs sexual reproduction single slender species spiral sporangia sporangium spores sporidiola sporocarp sporophore starch stem stomata structure substance superposed cells surface thallus thick thickened tissue transverse trichogyne unicellular usually vascular bundles vegetative portion wall xylem zoospores zygospore
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