What is "dionaea"

Usage examples of "dionaea".

These experiments are sufficient to show that the secretion from the glands of Dionaea dissolves albumen, gelatine, and meat, if too large pieces are not given.

On the other hand, with Dionaea, touching the filaments excites incomparably quicker movement than the absorption of animal matter by the glands.

Dionaea the absorption of nitrogenous matter causes the lobes to press together with extreme slowness, whilst a touch excites rapid movement.

We shall hereafter see that the filaments on the leaves of Dionaea are likewise insensible to the impact of fluids, though exquisitely sensitive to momentary touches from any solid body.

We shall hereafter see that the purple fluid within the sensitive filaments of Dionaea, which do not secrete, likewise undergoes aggregation from the action of a weak solution of carbonate of ammonia.

On the other hand, the sensitive filaments of Dionaea are not viscid, and the capture of insects can be assured only by their sensitiveness to a momentary touch, followed by the rapid closure of the lobes.

Although the cells of Drosera and Dionaea are quite as sensitive to certain stimulants as are the tissues which surround the terminations of the nerves in the higher animals, yet these plants are inferior even to animals low down in the scale, in not being affected except by stimulants in contact with their sensitive parts.

Darwin, Francis, on the effect of an induced galvanic current on Drosera, 37 , on the digestion of grains of chlorophyll, 126 , on Utricularia, 442 Delpino, on Aldrovanda, 321 , on Utricularia, 395 Dentine, its digestion by Drosera, 106 Digestion of various substances by Dionaea, 301 by Drosera, 85 by Drosophyllum, 339 by Pinguicula, 381 , origin of power of, 361 Digitaline, action on Drosera, 203 Dionaea muscipula, small size of roots, 286 , structure of leaves, 287 , sensitiveness of filaments, 289 , absorption by, 295 , secretion by, 295 , digestion by, 301 , effects on, of chloroform, 304 , manner of capturing insects, 305 , transmission of motor impulse, 313 , reexpansion of lobes, 318 Direction of inflected tentacles of Drosera, 243 Dohrn, Dr.

Drosera, 5 Spectroscope, its power compared with that of Drosera, 170 Starch, action of, on Drosera, 78, 126 Stein, on Aldrovanda, 321 Strontium, salts of, action on Drosera, 183 Strychnine, salts of, action on Drosera, 199 Sugar, solution of, action of, on Drosera, 78 , , inducing aggregation in Drosera, 51 Sulphuric ether, action on Drosera, 219 , on Dionaea, 304 Syntonin, its action on Drosera, 102 T.

Haematin, its digestion by Drosera, 121 Hairs, glandular, absorption by, 344 , , summary on, 353 Heat, inducing aggregation in Drosera, 53 , effect of, on Drosera, 66 , , on Dionaea, 294, 319 Heckel, on state of stamens of Berberis after excitement, 43 Hofmeister, on pressure arresting movements of protoplasm, 61 Holland, Mr.

Veratrine, action on Drosera, 204 Vessels in leaves of Drosera, 247 of Dionaea, 314 Vogel, on effects of camphor on plants, 209 W.

Dionaea, 301, 310, 313 , on Drosera filiformis, 281 Caraway, oil of, action on Drosera, 211 Carbonic acid, action on Drosera, 221 , delays aggregation in Drosera, 59 Cartilage, its digestion by Drosera, 103 Casein, its digestion by Drosera, 114 Cellulose, not digested by Drosera, 125 Chalk, precipitated, causing inflection of Drosera, 32 Cheese, its digestion by Drosera, 116 Chitine, not digested by Drosera, 124 Chloroform, effects of, on Drosera, 217 , , on Dionaea, 304 Chlorophyll, grains of, in living plants, digested by Drosera, 126 , pure, not digested by Drosera, 125 Chondrin, its digestion by Drosera, 112 Chromic acid, action on Drosera, 185 Cloves, oil of, action on Drosera, 212 Cobalt chloride, action on Drosera, 186 Cobra poison, action on Drosera, 206 Cohn, Prof.

The circumferential part of the leaf of Aldrovanda thus differs greatly from that of Dionaea.

The outside of the leaves and the petioles are covered with minute two-armed papillae, evidently answering to the eightrayed papillae of Dionaea.

In Dionaea the whole lobe, with the exception of the marginal prolongations or spikes, curves inwards, though the chief seat of movement is near the midrib.