. Foundations of botany. Fia. 275. — Red Cedar Trees planted by Birds roosting on Fences. parts at their leisure, leaving the seed perfectly fit togrow, as it often does.^ Squirrels and bluejays are known to carry nuts andacorns about and bury them for future use. These. Fig. 276. — Seed of Bloodroot witli Caruncle or Crest, which, serves as a Handlefor Ants to hold on to. Ant ready to take the seed. deposits are often forgotten and so get a chance to grow,and in this way a good deal of tree-planting is See Beals Seed Dispersal, pp. 69, 70. CHAPTER XXX THE STRUGGLE FOR EXISTENCE AND THE
. Foundations of botany. Fia. 275. — Red Cedar Trees planted by Birds roosting on Fences. parts at their leisure, leaving the seed perfectly fit togrow, as it often does.^ Squirrels and bluejays are known to carry nuts andacorns about and bury them for future use. These. Fig. 276. — Seed of Bloodroot witli Caruncle or Crest, which, serves as a Handlefor Ants to hold on to. Ant ready to take the seed. deposits are often forgotten and so get a chance to grow,and in this way a good deal of tree-planting is See Beals Seed Dispersal, pp. 69, 70. CHAPTER XXX THE STRUGGLE FOR EXISTENCE AND THE SURVIVAL OF THE FITTEST 1 • 455. Weeds. — Any flowering plant which is trouble-some to the farmer or gardener is commonly known as aweed. Though such plants are so annoying from theirtendency to crowd out others useful to man, they are ofextreme interest to the botanist on account of this veryhardiness. The principal characteristics of the most suc-cessful weeds are their ability to live in a variety of soilsand exposures, their rapid growth, resistance to frost,drought, and dust, their unfitness for the food of most ofthe larger animals, in many cases their capacity to accom-plish self-pollination, in default of cross-pollination, andtheir ability to prod
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