. Foundations of botany. Botany; Botany. HOW PLANTS PROTECT THEMSELVES 351 420. Weapons of Desert Plants. — In temperate regions, where vegetation is usually abundant, such moderate means of protection as have just been described are gener- ally sufficient to insure the safety of the plants which have developed them. But in desert or semi-desert regions the. Fig. 247. — Stinging Hairs and OuUing Leaves. (All mucli magnified.) a, stinging hairs on leaf of nettle; b^ bristle of the hugloss; o, bathed margin of a leaf of sedge; d, barbed margin of a leaf of grass. extreme scarcity of plant life e
. Foundations of botany. Botany; Botany. HOW PLANTS PROTECT THEMSELVES 351 420. Weapons of Desert Plants. — In temperate regions, where vegetation is usually abundant, such moderate means of protection as have just been described are gener- ally sufficient to insure the safety of the plants which have developed them. But in desert or semi-desert regions the. Fig. 247. — Stinging Hairs and OuUing Leaves. (All mucli magnified.) a, stinging hairs on leaf of nettle; b^ bristle of the hugloss; o, bathed margin of a leaf of sedge; d, barbed margin of a leaf of grass. extreme scarcity of plant life exposes the few plants that occur there to the attacks of all the herbivorous animals that may encounter them. Accordingly, great numbers of desert plants are characterized by nauseating or poisonous qualities .or by the presence of astonishingly developed thorns, while some combine both of these means of Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Bergen, Joseph Y. (Joseph Young), 1851-1917; Eastwood, Alice, 1859-1953. Boston, Ginn & Co.
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectbotany, bookyear1901
