Life-History of Ferns
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| Caption | Life-History of Ferns. A, Germinating Spore of Polypodium Vulgare: sp, Exospore; k, First Root-Hair. B, The Same Later. C, Young Prothallus of Aspidium: sp, Spore; pr, Prothallus. D, Under-Surface of the Same Later: pr, Prothallus; w, Root-Hairs; an, Antheridia; ar, Archegonia. E, Antheridium of Bracken (Pteris), Bursting: sp, Antherozoid Escaping from Spermatocyte. F, Archegonium of the Same, Unopen: h, Mucilaginous Canal-Cell; e, Central Cell. G, Section through a Pinnule of the Frond and Sorus of Aspidium: b, Mesophyll; sch, Indusium; sp, Sporangium; st, its Stalk; r, Annulus. H, Pinnule of Pteris, showing Veins and Sori. J, The Same in Asplenium. K, The Same in Polypodium (Sori Naked). L, The Same in Aspidium. Illustration for The New Popular Educator (Cassell, 1891). |
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| Creator | unknown |
| Artwork medium | printed material |
| Credit | Look and Learn |
| Search stock images by keyword | Life History of Ferns Germinating Spore of Polypodium Vulgare Exospore First Root Hair Same Later Young Prothallus of Aspidium Spore Prothallus Under Surface Antheridia Archegonia Antheridium of Bracken Pteris Bursting Antherozoid Escaping Spermatocyte Archegonium Unopen Mucilaginous Canal Cell Central Cell Pinnule Frond Sorus Aspidium Mesophyll Indusium Sporangium Stalk Annulus Pinnule of Pteris Veins Sori Polypodium Sori Naked Asplenium Life-History of Ferns |
| Stock image ref | Sizes available | Views |
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| M823150 | Hi-res: 3,103 x 5,156 pixels Lo-res: 776 x 1,289 pixels |
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