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Cross-section of Hoya stem stained with Toluidine Blue. Note the blue-green cells. They are lignified Sclereids. | ||
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Hoya Sclereid at high magnification. Note the staining reaction, the thick walls, the numerous large pits. | ||
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Seeds with hard seed coats contain Sclereids. Individual species may have several different types of sclereids in their coats. A Brachysclereid is seen at the extreme left. An Osteosclereid is in the middle and two Macrosclereids appear on the upper right. | ||
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Highly elongated Trichosclereids can be found in Olive leaves. These probably prevent severe wilting which would kill leaf cells. | ||
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The leaves & petioles of Waterl-Lilies (Nymphaea sps.) have spectacular sclereids. | ||
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Transverse section of a Waterlily leaf. Can you locate the Aerenchyma? | ||
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Cross-section through a living Nymphaea leaf. Note the two star-like Astrosclereids. These remind me of ballet dancers! | ||
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Astrosclereids, what else did you expect!!!!! | ||
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