equisetum life cycle. diagram of life cycle of horsetail equisetum arvense with dioecious gametophyte and titles

antheridium archegonium arvense asexual background biology botany change cycle developing development diagram dioecious diploid drawing english equisetum fertilisation fertilization flora gamete gametophyte germinating germination grass green grow growing growth horsetail illustration isolated life nature plant process puzzlegrass reproduction snake sperm sporangia spore sporophyte stage strobilus title vector vegetation white