. Handbook of flower pollination : based upon Hermann Mu?ller's work 'The fertilisation of flowers by insects' . Fertilization of plants. 492 ANGIOSPERMAE—MONOCOTYLEDONES and the end of the spadix, and by the smell of the inflorescence, which resembles that of decaying fruit. Martelli (Nuovo Giorn. bot. ital., Firenze, xxii, 1890, p. 129) adds that the protogynous inflorescences open in the morning. The stigmas are then receptive, but the anthers have not yet dehisced. The faecal odour is at its strongest in the upper part of the spadix, on which visitors alight. On the following day the anthe
. Handbook of flower pollination : based upon Hermann Mu?ller's work 'The fertilisation of flowers by insects' . Fertilization of plants. 492 ANGIOSPERMAE—MONOCOTYLEDONES and the end of the spadix, and by the smell of the inflorescence, which resembles that of decaying fruit. Martelli (Nuovo Giorn. bot. ital., Firenze, xxii, 1890, p. 129) adds that the protogynous inflorescences open in the morning. The stigmas are then receptive, but the anthers have not yet dehisced. The faecal odour is at its strongest in the upper part of the spadix, on which visitors alight. On the following day the anthers dehisce; the male flowers are situated on an inflorescence covered by a hood-like spathe. 2913. A. Dioscoridis Sibth. et Sm.—Caleri says that the spathe in this species opens early in the morning; between 8-9 it is visited by numerous flies (particularly muscids). The spathe then closes, the odour disappearing at the same time. On the second day the prisoners are set free. The stigmas of the protogynous flowers are therefore receptive for a very short time only. 940. Arisarum Targ. Toz. 2914. A. vulgare Targ. Toz. (= Arum Arisarum Z.). (Delpino, ' Ult. oss.,' pp. 21-2; Knuth, 'Blutenbiol. Beob. a. d. Ins. Capri,' pp. 18-25.)—While in the island of Capri during March 1892 I could not observe the first stage of anthesis of this interesting species, because the plant was too far matured, but the flower mechanism was still easily dis- tinguishable. Insects are attracted by the striped spathe and the pro- jecting end of the spadix, and are temporarily imprisoned. At an early stage these two organs are of a greenish colour, the spathe below its arched tip being greenish with white longitudinal streaks. In a later stage the curved tip of the spadix, projecting i-5—2 cm., is of a faint brownish tinge, and the hitherto greenish parts of the spathe assume the same colour, so that the upper, arched part of it appears to be brown, and the lower, cylindrical part is marked b
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