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قراءة كتاب The Movements and Habits of Climbing Plants
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Stephania rotunda (Menispermaceæ) moves against the sun.
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|
H. |
M. |
|
May 27, 1st circle was made in |
5 |
5 |
|
30, 2nd |
7 |
6 |
|
June 2, 3rd |
5 |
15 |
|
3, 4th |
6 |
28 |
Thryallis brachystachys (Malpighiaceæ) moves against the sun: one shoot made a circle in 12 hrs., and another in 10 hrs. 30 m.; but the next day, which was much colder, the first shoot took 10 hrs. to perform only a semicircle.
Hibbertia dentata (Dilleniaceæ), placed in the hothouse, followed the sun, and made (May 18th) a circle in 7 hrs. 20 m.; on the 19th, reversed its course, and moved against the sun, and made a circle in 7 hrs.; on the 20th, moved against the sun one-third of a circle, and then stood still; on the 26th, followed the sun for two-thirds of a circle, and then returned to its starting-point, taking for this double course 11 hrs. 46 m.
Sollya Drummondii (Pittosporaceæ) moves against the sun kept in greenhouse.
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|
H. |
M. |
|
|
April 4, 1st circle was made in |
4 |
25 |
|
|
5, 2nd |
8 |
0 |
(very cold day) |
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6, 3rd |
6 |
25 |
|
|
7, 4th |
7 |
5 |
|
Polygonum dumetorum (Polygonaceæ). 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 (Leguminosæ), in greenhouse, moves against the sun.
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|
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 (Leguminosæ), in greenhouse, moves against the sun.
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|
H. |
M. |
|
May, 1st circle was made in |
2 |
0 |
|
2nd |
1 |
55 |
|
3rd |
1 |
55 |
Dipladenia urophylla (Apocynaceæ) moves against the sun.
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|
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.
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|
H. |
M. |
|
May 16, 1st circle was made in |
9 |
5 |
|
July 20, 2nd |
8 |
0 |
|
21, 3rd |
8 |
5 |
Ceropegia Gardnerii (Asclepiadaceæ) moves against the sun.
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|
|
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 (Asclepiadaceæ) moves against the sun and made a circle in 6 hrs. 40 m., a second circle in about 9 hrs.
Hoya carnosa (Asclepiadaceæ) made several circles in from 16 hrs. to 22 hrs. or 24 hrs.
Ipomæa purpurea (Convolvulaceæ) moves against the sun. Plant placed in room with lateral light.
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1st circle was made in 2 hrs. 42 m. |
Semicircle, from the light in 1 hr. 14 m., to the light 1 hr. 28 m.: difference 14 m. |
|
2nd circle was made in 2 hrs. 47 m. |
Semicircle, from the light in 1 hr. 17 m., to the light 1 hr. 30 m.: difference 13 m. |
Ipomæa jucunda (Convolvulaceæ) moves against the sun, placed in my study, with windows facing the north-east. Weather hot.
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1st circle was made in 5 hrs. 30 m. |
Semicircle, from the light in 4 hrs. 30 m., to the light 1 hr. 0 m.: difference 3 hrs. 30 m. |
|
2nd circle was made in 5 hrs. 20 m. (Late in afternoon: circle completed at 6 hrs. 40 m. P.M.) |
Semicircle, from the light in 3 hrs. 50 m., to the light 1 hr. 30 m.: difference 2 hrs. 20 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 tiliæfolia (Convolvulaceæ) 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