. Handbook of flower pollination : based upon Hermann Mu?ller's work 'The fertilisation of flowers by insects' . Fertilization of plants. 268 ANGIOSPERMAE—DICOTYLEDONES 710. Thymus Toum. Species of this genus may be trioecious, but otherwise agree with those of Origanum. 2280. T. Serpyllxun L. (Sprengel, 'Entd. Geh.,' p. 311; Hildebrand, ' D. Geschlechts-Vert. b. d. Pfl.,' p. 26; Herm. Muller, 'Fertilisation,' pp. 472-5, ' Wait. Beob.,' Ill, pp. 56-7, ' Alpenblumen,' p. 322 ; Warming, ' Bestovningsmaade,' pp. 10-13; Knuth, 'Bliitenbiol. Beob. a. d. Ins. Riigen,' 'Bl. u. Insekt. a. d. nordfr. I
. Handbook of flower pollination : based upon Hermann Mu?ller's work 'The fertilisation of flowers by insects' . Fertilization of plants. 268 ANGIOSPERMAE—DICOTYLEDONES 710. Thymus Toum. Species of this genus may be trioecious, but otherwise agree with those of Origanum. 2280. T. Serpyllxun L. (Sprengel, 'Entd. Geh.,' p. 311; Hildebrand, ' D. Geschlechts-Vert. b. d. Pfl.,' p. 26; Herm. Muller, 'Fertilisation,' pp. 472-5, ' Wait. Beob.,' Ill, pp. 56-7, ' Alpenblumen,' p. 322 ; Warming, ' Bestovningsmaade,' pp. 10-13; Knuth, 'Bliitenbiol. Beob. a. d. Ins. Riigen,' 'Bl. u. Insekt. a. d. nordfr. Ins.,'pp. 117, 165,'Weit. Beob. ii. Bl. u. Insekt. a. d. nordfr. Ins.,'p. 234 ; Kirchner, 'Flora V. Stuttgart,' p. 612.)—Besides protandrous hermaphrodite flowers there are smaller female ones in this species; male flowers, however, are rare. The bright purple, rarely white blossoms are very fragrant, and the nectar (according to Hermann Wiiller) is of a spicy flavour. The capitate inflorescences are often so close together that they form (e. g. in the North Frisian Islands) large violet cushions on the moor-. FlG. 331. Thymus, L. (after Herm. Muller). (i)-(3> T. Serpyllmk, L. (i) Hermaphrodite flower in the first (male) stape. (2) Do., in the second (female) stage. (3) Female flower. (4)-(6) 7' vulgaris^ L. (4) Female flower. (5) Pistil of a hermaphrodite flower in the first stage. (6) Do-, in the second stage, a, vestigial anther ; w, nectary ; ov, ovary (x 7). land and beside its paths. This renders them extremely conspicuous, and ihey are therefore much visited by insects. The flower mechanism is essentially the same as that of Origanum vulgare. The stamens and style project freely from the corolla; in hermaphrodite flowers the stamens generally project beyond the style, which, how- ever, elongates later on, and stigmatic branches diverge as soon as they are above the anthers. Automatic self-polhnation is therefore impossible. Hitherto only female and hermaphrodite fl
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