The Plant World: Its Past, Present, and Future. An Introduction to the Study of Botany

Algæ amongst amount Angiosperms anther antherozoids appear aquatic arrangement asexual assimilation atmosphere become belonging called calyx carbonic dioxide carpels cell-wall cells chemical chlorophyll colour condition consequently consists constituting corolla cross-fertilization Cryptogams Dicotyledons differentiated division of labour entirely epidermis evolution evolved favourable female ferns fertilizing body fibro-vascular bundles flora flowering plants formation fruit function fundamental tissue fungi fungus germination green group of plants grow Gymnosperms hence illustrated individual inflorescence insects instances known latter leaf leaves light method minute mode modifications Monocotyledons motile nectar numerous oosphere organs origin ovary ovules palms parasite period petals Phanerogams phase phloem pistil plants and animals Pleurococcus pollen present day primitive produced protective protoplasm purpose regions reproductive root seaweeds seeds self-fertilization sepals sexual species spores stage stamens starch stem stigma stoma stomata structure substance surface tion trees trunk usually various vascular Vegetable Kingdom vegetative portion whereas whorls xylem