. The elements of structural botany [microform] : with special reference to the study of Canadian plants : to which is added a selection of examination papers. Plant anatomy; Botany; Botanique; Botanique. ig. '230. our coin- Htoni lies jittiiins a vals oroct kVl-slui[)('tl no sliowii a slcii(l(M' yliiKlrifiil hraiichos, all events ery much y sterile ;ems and tomoudy ;ed in the lal spike, lagnified, shown in ms by ii )ores. that the It is ish-white I-MAUACIKHS OK I'lKICl UOPIIY I KS. S9. irregular lohed body, sj)iirin;.(iy liirnislKMl o\\ its und«!r sur- face with small ; Tiuj
. The elements of structural botany [microform] : with special reference to the study of Canadian plants : to which is added a selection of examination papers. Plant anatomy; Botany; Botanique; Botanique. ig. '230. our coin- Htoni lies jittiiins a vals oroct kVl-slui[)('tl no sliowii a slcii(l(M' yliiKlrifiil hraiichos, all events ery much y sterile ;ems and tomoudy ;ed in the lal spike, lagnified, shown in ms by ii )ores. that the It is ish-white I-MAUACIKHS OK I'lKICl UOPIIY I KS. S9. irregular lohed body, sj)iirin;.(iy liirnislKMl o\\ its und«!r sur- face with small ; Tiuj authiu'idia and archcj^'imii ai)|u'ar to be ])r()duc('d on the uinusr sur- face, and tliesc l)y tiieir interaction, ;_;ive rise to the new plant which Ix'ars the spores, just as in the Kerns and ll^ rsu- tails ; so that M<,'ain there is an alternation of generations. 335. It is a fact of great interest that Fif,'. 238, in some pliints nearly related to the Club- Mosses, tirt) liiud)^ of sporesâlargo and smallâare producod in acparato sporangia. Tlie largo ones developo prothallia upon which arehegonia are formed, and the smaller others upon which antheridia ai)pear. 33G. The three plants just considered, while evidently differing in certain details of structure and in general , nevertheless have a number of characters in common : 1, Then agree in their niodr. of reprodiidi'm, which is hy 82X) these bodies heinrj quite unlilce the si;f<;ds with which wc are now familiar., and which, t/ou wilt recollect, always contain the embryo of the new plant. They all exhibit an alternation of generations. They all have true roots. 4-. The three tissne-systenisâtlie epidermal, the fihro- vasculary and the fundamentalâthough not all developed to so ^'igh a degree as in tlie Phanerogams, still can be very clearly made out in both roots arid stems. The fihro-vascnlar bundles are always closed, as in monocotyledons, and are, as a general rale, coneen t ric (209 ). Fiff. 23
Size: 1280px × 1953px
Photo credit: © Library Book Collection / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., book, bookcentury1800, booksubjectbotany, booksubjectplantanatomy
