Botany of the Southern states . e peculiar appearance of a petal, by which any onereadily distinguishes it from a leaf, is oc-casioned by the irregular arrangement ofthe cells that form its epidermis, someAPetaL being more elevated than others, (Fig. 11). 19. Crystals are sometimes found in the interior of are usually called Raphides (raphis, a needle); which term,however, is strictly applicable only to the needle-like crystals,abundant in many plants, Fig. 12 b. Fig. 12. They may be readily seen in theRhubarb or Onion. Other forms ofcrystals are found in cells and in otherintercell
Botany of the Southern states . e peculiar appearance of a petal, by which any onereadily distinguishes it from a leaf, is oc-casioned by the irregular arrangement ofthe cells that form its epidermis, someAPetaL being more elevated than others, (Fig. 11). 19. Crystals are sometimes found in the interior of are usually called Raphides (raphis, a needle); which term,however, is strictly applicable only to the needle-like crystals,abundant in many plants, Fig. 12 b. Fig. 12. They may be readily seen in theRhubarb or Onion. Other forms ofcrystals are found in cells and in otherintercellular spaces, Fig. 12 a. Themost common substance found crys-tallized is Oxalate Of Lime. Crystals in cells? 20. The cell originates in a mucilaginous fluid, which be-comes turbid by minute granules which collect in masses, Illustrate it by examples. To what is the color of petals owing? Towhat their peculiar appearance ? —19. Where are crystals sometimes round ?What substance is most common?—20. How does the cell originate?.
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Keywords: ., bookcentury1800, bookdecade1860, bookpublisher, booksubjectbotany
