. Lessons with plants. Suggestions for seeing and interpreting some of the common forms of vegetation. Fig. 415. Pig. 416. Fig. 417. Japanese hop,—with Morning-glory,—against Morning-glory refus-the sun. the sun. ing to twine with the sun. 398 ZSSSONS WITH PLANTS We shall expect to find that most kinds of twin-ing plants coil in only one direction. 501(1. Plants which eoil with the sun, or from the observersright to left, are known as sinistrorse or eutropic ; those which coil. Fig. 418. Tendrilof cucumber. against the sun, or left to right, are dextrorse or antitropic. The lat-ter direction i
. Lessons with plants. Suggestions for seeing and interpreting some of the common forms of vegetation. Fig. 415. Pig. 416. Fig. 417. Japanese hop,—with Morning-glory,—against Morning-glory refus-the sun. the sun. ing to twine with the sun. 398 ZSSSONS WITH PLANTS We shall expect to find that most kinds of twin-ing plants coil in only one direction. 501(1. Plants which eoil with the sun, or from the observersright to left, are known as sinistrorse or eutropic ; those which coil. Fig. 418. Tendrilof cucumber. against the sun, or left to right, are dextrorse or antitropic. The lat-ter direction is the more common. 502. Let the pupil watch the free end of atwiner, — as on a young plant which has not yetfound a support, or a long tip projecting above*a support — and take note of the position or di-rection of the tip at different times of the will find that the tip revolves in a plane, asif seeking a support. 503. The cucumber climbs by means of ten-drils (Fig. 418). Notice that the tendril is hooked,in readiness to catch a support. Does the pointof the tendril revolve? Watch it closely; or draw BOW SOME PLANTS GET UP IN TEE WORLD 399 a mark along one side of it, from base to tip,with indelible ink, and observe if the line be-
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Keywords: ., bookauthorbai, bookcentury1900, bookdecade1900, booksubjectbotany
