The Movements and Habits of Climbing Plants. Чарльз ДарвинЧитать онлайн книгу.
Roxburghia viridiflora (Roxburghiaceæ) moves against the sun; it completed a circle in about 24 hours.
(Dicotyledons.)
Humulus Lupulus (Urticaceæ) follows the sun. The plant was kept in a room during warm weather.
| H. | M. | |
| April 9, 2 circles were made in | 4 | 16 |
| Aug. 13, 3rd circle was | 2 | 0 |
| 14, 4th | 2 | 20 |
| 14, 5th | 2 | 16 |
| 14, 6th | 2 | 2 |
| 14, 7th | 2 | 0 |
| 14, 8th | 2 | 4 |
With the Hop a semicircle was performed, in travelling from the light, in 1 hr. 33 m.; in travelling to the light, in 1 hr. 13 m.; difference of rate, 20 m.
Akebia quinata (Lardizabalaceæ), placed in hothouse, moves against the sun.
| H. | M. | ||
| March 17, 1st circle was made in | 4 | 0 | (shoot young) |
| 18, 2nd | 1 | 40 | |
| 18, 3rd | 1 | 30 | |
| 19, 4th | 1 | 45 |
Stauntonia latifolia (Lardizabalaceæ), placed in hothouse, moves against the sun.
| H. | M. | |
| March 28, 1st circle was made in | 3 | 30 |
| 29, 2nd | 3 | 45 |
Sphærostemma marmoratum (Schizandraceæ) follows the sun.
| H. | M. | |
| August 5th, 1st circle was made in about | 24 | 0 |
| 5th, 2nd circle was made in | 18 | 30 |
Stephania rotunda (Menispermaceæ) moves against the sun.
| 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.
| H. | M. | ||
| April 4, 1st circle was made in | 4 | 25 | |
| 5, 2nd | 8 | 0 | (very cold day) |
| 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.
| 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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