. Outlines of plant life : with special reference to form and function . Botany. 194 OUTLINES OF PLANT LIFE. spni upon the sexual stage, with which it is connected throughout its entire existence (^ 60). In the fernworts and seed plants, however, the sporophyte pos- sesses extensive nutritive tissues, the leaves, stems, and roots be- longing entirely to this stage. Sporangia in these plants may be formed either upon the stem or the leavesânever upon the roots. 274. Liverworts and mosses. âIn most liverworts and mosses the spore case is developed within the enlarged upper part of the sporophyte
GLIX-115-RDJ2CM
Magyarország
Kollekció
GLIX Prime
Black and whiteNovel Use
Fotós / Szerző
The Book Worm
Leírás
. Outlines of plant life : with special reference to form and function . Botany. 194 OUTLINES OF PLANT LIFE. spni upon the sexual stage, with which it is connected throughout its entire existence (^ 60). In the fernworts and seed plants, however, the sporophyte pos- sesses extensive nutritive tissues, the leaves, stems, and roots be- longing entirely to this stage. Sporangia in these plants may be formed either upon the stem or the leavesânever upon the roots. 274. Liverworts and mosses. âIn most liverworts and mosses the spore case is developed within the enlarged upper part of the sporophyte