Handbook of practical botany for the botanical laboratory and private student (1908)
Strasburger, Eduard, 1844-1912, Hillhouse, William, 1850-1910 · London, S. Sonnenschein; New York, Macmillan · leaf 227
surface of which has been cut off to somewhat flatten it.We readily note that the upper side (Fig. 75, A) has no, or at themost but few, stomata ; while these, on the other hand, arenumerous on the under side {B). Elongated stomatic pits, filledwith air, lead up to the stomata. Above the glands, as… … Fig. 75. —Epidermis and underlying tissue of the leaf of Ruta graveolens. A, epi-dermis of the upper side ; sc, epidermal cells over an internal gland ; x>, palisade cells ;B, epidermis of the under side ; s, spongy parenchyma. In A the intercellular spaces,filled with air, are shaded ; in B…
Botany · Plant physiology · Microscopy
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