The Movements and Habits of Climbing Plants [10]
circle was made in 4 25 5, 2nd 8 0 (very cold day) 6, 3rd 6 25 7, 4th 7 5
Polygonum dumetorum (Polygonaceae). This case is taken from Dutrochet (p. 299), as I observed, no allied plant: follows the sun. Three shoots, cut off a plant, and placed in water made circles in 3 hrs. 10 m., 5 hrs. 20 m., and 7 hrs. 15 m.
Wistaria Chinensis (Leguminosae), in greenhouse, moves against the sun.
H. M. May 13, 1st circle was made in 3 5 13, 2nd 3 20 16, 3rd 2 5 24, 4th 3 21 25, 5th 2 37 25, 6th 2 35
Phaseolus vulgaris (Leguminosae), in greenhouse, moves against the sun.
H. M. May, 1st circle was made in 2 0 2nd 1 55 3rd 1 55
Dipladenia urophylla (Apocynaceae) moves against the sun.
H. M. April 18, 1st circle was made in 8 0 19, 2nd 9 15 30, 3rd 9 40
Dipladenia crassinoda moves against the sun.
H. M. May 16, 1st circle was made in 9 5 July 20, 2nd 8 0 21, 3rd 8 5
Ceropegia Gardnerii (Asclepiadaceae) moves against the sun.
H. M. Shoot very young, 2 inches } in length } 1st circle was performed in 7 55 Shoot still young 2nd 7 0 Long shoot 3rd 6 33 Long shoot 4th 5 15 Long shoot 5th 6 45
Stephanotis floribunda (Asclepiadaceae) moves against the sun and made a circle in 6 hrs. 40 m., a second circle in about 9 hrs.
Hoya carnosa (Asclepiadaceae) made several circles in from 16 hrs. to 22 hrs. or 24 hrs.
Ipomaea purpurea (Convolvulaceae) moves against the sun. Plant placed in room with lateral light.
{Semicircle, from the light in 1st circle was made in 2 hrs. 42 m. { 1 hr. 14 m., to the light { 1 hr. 28 m.: difference 14 m.
{Semicircle, from the light in 2nd circle was made in 2 hrs. 47 m. { 1 hr. 17 m., to the light 1 hr. { 30 m.: difference 13 m.
Ipomaea jucunda (Convolvulaceae) moves against the sun, placed in my study, with windows facing the north-east. Weather hot.
{Semicircle, from the light in 1st circle was made in 5 hrs. 30 m. { 4 hrs. 30 m., to the light 1 hr. { 0 m.: difference 3 hrs. 30 m.
2nd circle was made in 5 hrs. {Semicircle, from the light in 20 m. (Late in afternoon: { 3 hrs. 50 m., to the light 1 hr. circle completed at 6 hrs. 40 m. { 30 m.: difference 2 hrs. 20 m. P.M.)
We have here a remarkable instance of the power of light in retarding and hastening the revolving movement. (See ERRATA.)
Convolvulus sepium (large-flowered cultivated var.) moves against the sun. Two circles, were made each in 1 hr. 42 m.: difference in semicircle from and to the light 14 m.
Rivea tiliaefolia (Convolvulaceae) moves against the sun, made four revolutions in 9 hrs.; so that, on an average, each was performed in 2 hrs. 15 m.
Plumbago rosea (Plumbaginaceae) follows the sun. The shoot did not begin to revolve until nearly a yard in height; it then made a fine circle in 10 hrs. 45 m. During the next few days it continued to move, but irregularly. On August 15th the shoot followed, during a period of 10 hrs. 40 m., a long and deeply zigzag course and then made a broad ellipse. The figure apparently represented
Polygonum dumetorum (Polygonaceae). This case is taken from Dutrochet (p. 299), as I observed, no allied plant: follows the sun. Three shoots, cut off a plant, and placed in water made circles in 3 hrs. 10 m., 5 hrs. 20 m., and 7 hrs. 15 m.
Wistaria Chinensis (Leguminosae), in greenhouse, moves against the sun.
H. M. May 13, 1st circle was made in 3 5 13, 2nd 3 20 16, 3rd 2 5 24, 4th 3 21 25, 5th 2 37 25, 6th 2 35
Phaseolus vulgaris (Leguminosae), in greenhouse, moves against the sun.
H. M. May, 1st circle was made in 2 0 2nd 1 55 3rd 1 55
Dipladenia urophylla (Apocynaceae) moves against the sun.
H. M. April 18, 1st circle was made in 8 0 19, 2nd 9 15 30, 3rd 9 40
Dipladenia crassinoda moves against the sun.
H. M. May 16, 1st circle was made in 9 5 July 20, 2nd 8 0 21, 3rd 8 5
Ceropegia Gardnerii (Asclepiadaceae) moves against the sun.
H. M. Shoot very young, 2 inches } in length } 1st circle was performed in 7 55 Shoot still young 2nd 7 0 Long shoot 3rd 6 33 Long shoot 4th 5 15 Long shoot 5th 6 45
Stephanotis floribunda (Asclepiadaceae) moves against the sun and made a circle in 6 hrs. 40 m., a second circle in about 9 hrs.
Hoya carnosa (Asclepiadaceae) made several circles in from 16 hrs. to 22 hrs. or 24 hrs.
Ipomaea purpurea (Convolvulaceae) moves against the sun. Plant placed in room with lateral light.
{Semicircle, from the light in 1st circle was made in 2 hrs. 42 m. { 1 hr. 14 m., to the light { 1 hr. 28 m.: difference 14 m.
{Semicircle, from the light in 2nd circle was made in 2 hrs. 47 m. { 1 hr. 17 m., to the light 1 hr. { 30 m.: difference 13 m.
Ipomaea jucunda (Convolvulaceae) moves against the sun, placed in my study, with windows facing the north-east. Weather hot.
{Semicircle, from the light in 1st circle was made in 5 hrs. 30 m. { 4 hrs. 30 m., to the light 1 hr. { 0 m.: difference 3 hrs. 30 m.
2nd circle was made in 5 hrs. {Semicircle, from the light in 20 m. (Late in afternoon: { 3 hrs. 50 m., to the light 1 hr. circle completed at 6 hrs. 40 m. { 30 m.: difference 2 hrs. 20 m. P.M.)
We have here a remarkable instance of the power of light in retarding and hastening the revolving movement. (See ERRATA.)
Convolvulus sepium (large-flowered cultivated var.) moves against the sun. Two circles, were made each in 1 hr. 42 m.: difference in semicircle from and to the light 14 m.
Rivea tiliaefolia (Convolvulaceae) moves against the sun, made four revolutions in 9 hrs.; so that, on an average, each was performed in 2 hrs. 15 m.
Plumbago rosea (Plumbaginaceae) follows the sun. The shoot did not begin to revolve until nearly a yard in height; it then made a fine circle in 10 hrs. 45 m. During the next few days it continued to move, but irregularly. On August 15th the shoot followed, during a period of 10 hrs. 40 m., a long and deeply zigzag course and then made a broad ellipse. The figure apparently represented