. Lessons with plants. Suggestions for seeing and interpreting some of the common forms of vegetation. Pig. 260. Pruit of balIo6n-vine,or carcliospermum. and some dry-podded garden peas and beans. Ripe pods of Japanesewistaria (a leguminous climber much used for porches and arbors^explode with great force when laid upon a table in a warm room.(See 331.) 317. The curious papery-inflated fruit of theballoon vine, or heartseed of the gardens (andnative in the southwestern states), is shown inFig. 260. It is 3-loculed, with a single globular COMPOUND FOBS 269 seed borne midway up the placenta of e
. Lessons with plants. Suggestions for seeing and interpreting some of the common forms of vegetation. Pig. 260. Pruit of balIo6n-vine,or carcliospermum. and some dry-podded garden peas and beans. Ripe pods of Japanesewistaria (a leguminous climber much used for porches and arbors^explode with great force when laid upon a table in a warm room.(See 331.) 317. The curious papery-inflated fruit of theballoon vine, or heartseed of the gardens (andnative in the southwestern states), is shown inFig. 260. It is 3-loculed, with a single globular COMPOUND FOBS 269 seed borne midway up the placenta of each is indehiscent, the seed being Uberated by thedecay of the walls of the fruit. It would appear,therefore, that this fruit could not be called apod or a capsule, since the definition of thosefruits includes dehiscence; but this fruit- is so likea pod in its general structure and in being Fig. and tardily-dehiscent legumes of daubentonia. that it is commonly called a pod. There is nodistinctive technical name for this type of fruit. 317(1. Even in the Leguminosse, or pea family (240), which pro-duces the fruit taken as the type of the simple pod or legume,there are plants which produce practically indehiscent poda. Observethe honey locust, clover, peanut; also the daubentonia, in Fig. 261. 318. We have now seen (307) that the compoundovary of the mustard imitates a simple ovary (thepartition being a false one), and the compound pod 270 LESSONS WITH PLANTS of the mignonette is perfectly 1-loculed. We havealso observed the various and sometimes undefina-ble dehiscence of pods, and have found that somefruits which are so much like pods that they arecalled pods by botanists are wholly indehiscent, andthat even • legumes may be indehiscent. We arethus impressed with the fact that names anddefinitions are merely convenient means of designat-ing a few of the
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Keywords: ., bookauthorbai, bookcentury1900, bookdecade1900, booksubjectbotany
