. Selected western flora : Manitoba, Saskatchewan, Alberta . Botany; Botany; Botany. SELECTED WESTERN FLORA MANITOBA, SASKATCHEWAN, AND ALBERTA DIVISION I. PTERIDOPHYTA. (Vascular Cryptograms.) Plants without true flowers, and reproducing with an alternation of generations. The sexual generation, the prothallus, is incon- spicuous, while the asexual consists of conspicuous fronds, some of which bear the reproductive bodies or spores. I. POLYPODlACE.® (Febn Family). Leaf-like herbaceous fronds springing from a creeping rootstock; spores enclosed in sporangia (spore-eases) collected in groups ca
GLIX-115-RDEX72
Magyarország
Kollekció
GLIX Prime
Black and whiteNovel Use
Fotós / Szerző
The Book Worm
Leírás
. Selected western flora : Manitoba, Saskatchewan, Alberta . Botany; Botany; Botany. SELECTED WESTERN FLORA MANITOBA, SASKATCHEWAN, AND ALBERTA DIVISION I. PTERIDOPHYTA. (Vascular Cryptograms.) Plants without true flowers, and reproducing with an alternation of generations. The sexual generation, the prothallus, is incon- spicuous, while the asexual consists of conspicuous fronds, some of which bear the reproductive bodies or spores. I. POLYPODlACE.® (Febn Family). Leaf-like herbaceous fronds springing from a creeping rootstock; spores enclosed in sporangia (spore-eases) collected in groups ca