Book contents
- Frontmatter
- Contents
- CHAPTER I DROSERA ROTUNDIFOLIA, OR THE COMMON SUN-DEW
- CHAPTER II THE MOVEMENTS OF THE TENTACLES FROM THE CONTACT OF SOLID BODIES
- CHAPTER III AGGREGATION OF THE PROTOPLASM WITHIN THE CELLS OF THE TENTACLES
- CHAPTER IV THE EFFECTS OF HEAT ON THE LEAVES
- CHAPTER V THE EFFECTS OF NON-NITROGENOUS AND NITROGENOUS ORGANIC FLUIDS ON THE LEAVES
- CHAPTER VI THE DIGESTIVE POWER OF THE SECRETION OF DEOSERA
- CHAPTER VII THE EFFECTS OF SALTS OF AMMONIA
- CHAPTER VIII THE EFFECTS OF VARIOUS OTHER SALTS, AND ACIDS, ON THE LEAVES
- CHAPTER IX THE EFFECTS OF CERTAIN ALKALOID POISONS, OTHER SUBSTANCES AND VAPOURS
- CHAPTER X ON THE SENSITIVENESS OF THE LEAVES, AND ON THE LINES OF TRANSMISSION OF THE MOTOR IMPULSE
- CHAPTER XI RECAPITULATION OF THE CHIEF OBSERVATIONS ON DROSERA ROTUNDIFOLIA
- CHAPTER XII ON THE STRUCTURE AND MOVEMENTS OF SOME OTHER SPECIES OF DROSERA
- CHAPTER XIII DIONÆA MUSCIPULA
- CHAPTER XIV ALDROVANDA VESICULOSA
- CHAPTER XV DROSOPHYLLUM — RORIDULA — BYBLIS — GLANDULAR HAIRS OF OTHER PLANTS — CONCLUDING REMARKS ON THE DROSERACEÆ
- CHAPTER XVI PINGUICULA
- CHAPTER XVII UTRICULARIA
- CHAPTER XVIII UTRICULARIA (continued)
- ERRATA
- INDEX
CHAPTER XIV - ALDROVANDA VESICULOSA
Published online by Cambridge University Press: 29 August 2010
- Frontmatter
- Contents
- CHAPTER I DROSERA ROTUNDIFOLIA, OR THE COMMON SUN-DEW
- CHAPTER II THE MOVEMENTS OF THE TENTACLES FROM THE CONTACT OF SOLID BODIES
- CHAPTER III AGGREGATION OF THE PROTOPLASM WITHIN THE CELLS OF THE TENTACLES
- CHAPTER IV THE EFFECTS OF HEAT ON THE LEAVES
- CHAPTER V THE EFFECTS OF NON-NITROGENOUS AND NITROGENOUS ORGANIC FLUIDS ON THE LEAVES
- CHAPTER VI THE DIGESTIVE POWER OF THE SECRETION OF DEOSERA
- CHAPTER VII THE EFFECTS OF SALTS OF AMMONIA
- CHAPTER VIII THE EFFECTS OF VARIOUS OTHER SALTS, AND ACIDS, ON THE LEAVES
- CHAPTER IX THE EFFECTS OF CERTAIN ALKALOID POISONS, OTHER SUBSTANCES AND VAPOURS
- CHAPTER X ON THE SENSITIVENESS OF THE LEAVES, AND ON THE LINES OF TRANSMISSION OF THE MOTOR IMPULSE
- CHAPTER XI RECAPITULATION OF THE CHIEF OBSERVATIONS ON DROSERA ROTUNDIFOLIA
- CHAPTER XII ON THE STRUCTURE AND MOVEMENTS OF SOME OTHER SPECIES OF DROSERA
- CHAPTER XIII DIONÆA MUSCIPULA
- CHAPTER XIV ALDROVANDA VESICULOSA
- CHAPTER XV DROSOPHYLLUM — RORIDULA — BYBLIS — GLANDULAR HAIRS OF OTHER PLANTS — CONCLUDING REMARKS ON THE DROSERACEÆ
- CHAPTER XVI PINGUICULA
- CHAPTER XVII UTRICULARIA
- CHAPTER XVIII UTRICULARIA (continued)
- ERRATA
- INDEX
Summary
This plant may be called a miniature aquatic Dionæa. Stein discovered in 1873 that the bilobed leaves, which are generally found closed in Europe, open under a sufficiently high temperature, and, when touched, suddenly close. They re-expand in from 24 to 36 hrs., but only, as it appears, when inorganic objects are enclosed. The leaves sometimes contain bubbles of air, and were formerly supposed to be bladders; hence the specific name of vesiculosa. Stein observed that water-insects were sometimes caught, and Prof. Cohn has recently found within the leaves of naturally growing plants many kinds of crustaceans and larvæ. Plants which had been kept in filtered water were placed by him in a vessel containing numerous crustaceans of the genus Cypris, and next morning many were found imprisoned and alive, still swimming about within the closed leaves, but doomed to certain death.
Directly after reading Prof. Cohn's memoir, I received through the kindness of Dr. Hooker living plants from Germany. As I can add nothing to Prof. Cohn's excellent description, I will give only two illustrations, one of a whorl of leaves copied from his work, and the other of a leaf pressed flat open, drawn by my son Francis. I will, however, append a few remarks on the differences between this plant and Dionæa.
Aldrovanda is destitute of roots and floats freely in the water. The leaves are arranged in whorls round the stem.
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- Insectivorous Plants , pp. 321 - 331Publisher: Cambridge University PressPrint publication year: 2009