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Ferns |
Record 26 to 50 of 58 |
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Fern Spore Plant "Spore-plant of a fern (Aspidium filix-mas). A, part of a rootstock and fronds; fr, young fronds unrollin. B, under side of a pinnule, showing sori, s. C, section through a sorus at right angles to su... |
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Fern, Antrophyum The Antrophyum Lessonii is a type of fern from the Polypodiaceae family.... |
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Fern, Bristle (Aerialroot) The spore-cases and cup of Trichomanes radicans or the Aerialroot Bristle Fern.... |
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Fern, Curlygrass Schizaea pusilla, or Little Curlygrass Fern is a small species of fern in the Curlygrass family (Schizaeaceae). here showing: "a, pinnule with sporangia; b, a sporangium, on larger scale." -Whitney, 1... |
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Fern, Gian Tree "The Fern is a leafy plant springing from a rhizome, which creeps below or on the surface of the ground or rises into the air like the trunk of a tree. This trunk does not taper, but is of equal diame... |
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Fern, Maidenhair The maidenhair fern or Adiantum.... |
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Fern, Marratia "Top, lateral pinna from a leaf of Marattia jraxinea. Below at left, synangium of same. At right, corss-section of the synangium." -Gager, 1916... |
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Fern, Seed A species of Seed Fern (Sphenopteris obtusiloba) is a fossil fern in the Carboniferous Era.... |
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Fern, Seed A species of Seed Fern (Sphenopteris latifolia) is a fossil fern in the Carboniferous period.... |
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Fossil Fern Eremopteris artemisiaefolia is a species of "a genus of fossil ferns, separated from Sphenopteris." -Whitney, 1911... |
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Fossil Tree Fern "Portion of fossil tree fern (Pecopteris arborescens) on coal shale." -Taylor, 1904... |
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Horsetail, Wood "Equisetum sylvaticum: a, a, sheath crowned with teeth; b, branches; c, c, fruiting spikes. 2. Clypeola, bearing sporangia. 3. Spore, with elaters coiled about it." -Whitney, 1911... |
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Leaf, Fern This is the leaf of the common fern, or brake. On the back of the leaf are spores.... |
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Maiden-hair A young prothallus of a Maiden-hair and an older one with the first fern-leaf developed from near the notch.... |
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Male Fern, Common The Common Male Fern (Dryopteris filix-mas) is a species of male fern in the Dryopteridaceae family.... |
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Nephrolepis, Section of a An illustration of section through a pinnule of the frond and sorus of Aspidium: b, mesophyll; sch, indusium; sp, sporangium; st, its stalk; r, annulus.... |
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Onoclea This illustration shows the sensitive fern, Onoclea: A, portion of normal green leaf. B, a spore-bearing leaf. C, two views of one of the round lobes of B, showing the veins and the sori on inner side... |
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Polypodium, Pinnule of An illustration of a pinnule of polypodium showing veins and sori.... |
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Prothallius of Fern, Young An illustration of a young prothallus: sp, spore; pr, prothallus. A prothallium, or prothallus is usually a pteridophyte, i.e. spore-bearing plant, (almost exclusively ferns) in gametophyte stage in ... |
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Prothallius of Fern, Young An illustration of a microscopic view under the surface of a young prothallus: pr, prothallus; w, root-hairs; an, antheridia; ar, archegonia. A prothallium, or prothallus is usually a pteridophyte, i... |
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Pteris, Pinnule of An illustration of a pinnule of pteris showing veins and sori.... |
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Schizaea The spore-case of Schizaea dichotoma, a fern from the Polypodiaceae family.... |
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Schizaea pusilla A very small and simple-leaved Fern.... |
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Sea Fern Fossil An illustration of a sea fern fossil from the carboniferous period. The Carboniferous is a geologic period and system that extends from the end of the Devonian period, about 359.2 ± 2.5 Ma (mi... |
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Silver Fern The Silver Fern (Cyathea dealbata) is a plant in the Cyatheaceae family of tree ferns. It was also known as the synonym Gymnogramme tartarea.... |
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