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Testa and its various forms—Collomia—Axis, tigellum,
hypocotyle—Centre of growth—Double embryo—Three conditions
required for germination—Varying time in different plants—
Cedar of Lebanon—Railway-bank flora—Broad beans—Cress seed—
Tillandsia—Collecting seedling trees—Fern and moss spores—
Prothallium—Archegonium—Antheridium germ cells—Capsular fruit
of mosses—Protonema.