Botanical Images Collection

The BOTANICAL IMAGES page is under consrtuction! We are however pleased to provide you with a sample of the images located in our BSA Online Teaching Images while we finish our work. We hope that the beautiful images and their explanations (donated by the members of the Botanical Society of America) prove to be a useful resource. We also hope you enjoy the stories they tell and that they open up your possibilities for asking new questions!

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Illustration by: John Curtis & Nels Lersten - Populus grandidentata - young leaf with trichomes prior to abscission. Note constricted base of trichome - where abscission will occur.
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Illustration by: Veronon Ahmadjian - Cladonia cristatella a lichen commonly called “British Soldiers” because of the bright red reproductive structures at the tips of light green stalks. Lichens are a symbiotic organism consisting partly of fungus and partly of alga.
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Illustration by: John Hall - Sphenophyllum plurifoliatum this is a photograph of a cross-section through a woody fossil from the carboniferous ages. The radiating files are xylem (wood) cells surrounded by a darker layer of phloem. This specimen was about as big as a wooden pencil and is related to modern horsetails and scouring rushes. Some of its fossil relatives were more than a foot in diameter and greater than 60 ft tall.
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Illustration by: David Webb - Drosera spp. note the hairy edges along these elongate leaves. They glisten in the light because the swollen tips are filled with fluid - hence the common name “sundew.” But those tips are also very sticky and trap insects like fly paper, and then secrete digestive enzymes. Sundews are one of several types of carnivorous plants.
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Illustration by: Marshall Sundberg - Solanum tuber, fresh, the dark-edged oval structures are starch grains clustered inside of living cells from common potatoes.
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Illustration by: Marshall Sundberg - Smilax herbacea, root, x.s. The root of a Greenbriar vine was cut in cross-section and stained to differentiate between the layers of different tissues in this complex organ. The blue dots in the pinkish cells are starch grains similar to those in the potato in the photo above. On the right is a distinctive red layer of epidermal cells forming the outer “skin” of the root. Near the middle is a distinctive red layer of endodermal cells dividing the storage tissue on the right from the vascular tissue on the left.
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Illustration by: Vernon Ahmadjian - Cladonia cristatella This is the same “British Soldiers” lichen as illustrated above, but as seen with a scanning electron microscope. In this view it is easy to see the filamentous fungal cells that surround the more spherical algal cells.
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Illustration by: David Webb - Sarracenia alata a beautiful view of a southern pitcher plant bog in full bloom (but a deadly view to any insect that flies into one of the greenish-red pitcher leaves in the left foreground.
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Illustration by: David Webb - Sarracenia rubra, in this view the elaborate flower is on the left and the pitcher leaf is on the right. The leaf is trumpet-shaped and partially filled with liquid that is attractive to insects - - but deadly if they fall in!
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Illustration by: Marshall Sundberg - Cyclamen coum, this ornamental flower has been cut lengthwise to expose the reproductive organs in the center. Bright yellow stamens surround the white pistil which consists of fused carpels with free-central placentation.
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Illustration by: Katherine Esau & Jennifer Thorsch - Beta vulgaris L., a transmission electron microscope was used to obtain this image of a few cells in a vein of a beet leaf. Running diagonally from lower left to upper right are two contiguous sieve cells that make up the conducting tissue, phloem. The oval stripped structure above the sieve cell on the left is a chloroplast in an adjacent cell.
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Illustration by: Douglas Reynolds - Salix nivalis taken in the geographic area of Montana. Standing only an inch or two high, these willow “trees” are in full flower in a high mountain meadow. At high elevation, just as in the arctic, even woody plants are dwarfed, however, the reproductive structures (in this case catkins) remain “full size.”

AJB Online: Other Cover Stories

Investigate the Cover Stories of the American Journal of Botany for the following years:

2003, 2002, 2001, 2000, 1999, 1998, BSA Online Teaching Images