The elements of botany for beginners and for schools . Fig. 509. A young prothallus of a Maiden-hair, moderately enlarged, and anolder one with the first fern-leaf developed from near the notch. 510. Middle por-tion of the young one, much magnified, showing below, partly among the rootlets,the antheridia or fertilizing organs, and above, near the notch, three piatiUidia,to be fertilized. 160 CRYPTOGAMOUS OR FLOWERLESS PLANTS. [SECTION 17. closely resembles a small Liverwort. This is named a PEOTHAliUS (): from some point of this a bud appears to originate, which producesthe first fern-l
The elements of botany for beginners and for schools . Fig. 509. A young prothallus of a Maiden-hair, moderately enlarged, and anolder one with the first fern-leaf developed from near the notch. 510. Middle por-tion of the young one, much magnified, showing below, partly among the rootlets,the antheridia or fertilizing organs, and above, near the notch, three piatiUidia,to be fertilized. 160 CRYPTOGAMOUS OR FLOWERLESS PLANTS. [SECTION 17. closely resembles a small Liverwort. This is named a PEOTHAliUS (): from some point of this a bud appears to originate, which producesthe first fern-leaf, soon followed by a second and third, and so the stemand leaves of the plant are set up. 490. Investigation of this prothallus under the microscope resulted inthe discovery of a wholly unsuspected kind of fertilization, taking place at
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectbotany, bookyear1887
