. Handbook of flower pollination : based upon Hermann Mu?ller's work 'The fertilisation of flowers by insects' . Fertilization of plants. 296 ANGIOSPERMAE—DICOTYLEDONES 699. T. badium Schreb. (Herm. Miiller, ' Alpenblumen,' pp. 246-7.)—The tiny golden-yellow flowers of this species are scarcely 8 mm. long, and the distance from the tip of the carina to the nectar is hardly 4 mm., so that it is accessible to quite short-tongued bees. Lepidoptera are also easily able to effect cross- pollination, for the stigma is at about the same level as the anthers, surrounded by them, and situated quite at
. Handbook of flower pollination : based upon Hermann Mu?ller's work 'The fertilisation of flowers by insects' . Fertilization of plants. 296 ANGIOSPERMAE—DICOTYLEDONES 699. T. badium Schreb. (Herm. Miiller, ' Alpenblumen,' pp. 246-7.)—The tiny golden-yellow flowers of this species are scarcely 8 mm. long, and the distance from the tip of the carina to the nectar is hardly 4 mm., so that it is accessible to quite short-tongued bees. Lepidoptera are also easily able to effect cross- pollination, for the stigma is at about the same level as the anthers, surrounded by them, and situated quite at the top of the broad open cleft of the carina (see Fig. 96). In the absence of insect-visits automatic self-pollination readily occurs. Visitors.—Herm. Miiller observed 4 humble-bees and 11 Lepidoptera. 700. T. agrarium L. (Herm. Miiller, 'Weit. Beob.,' II, p. 250; MacLeod, Bot. Jaarb. Dodonaea, Ghent, vi, 1894, p. 350.)—Here again automatic self-pollination is nh Fig. 95. Trifolium palUsctTis, Schreb. lafter Herm. Miiller). A. Flower seen from below. B. The same, after removal of the calyx and vexillum ; seen from above. C. The same, seen from* the side. D. Flower after removal of the vexillum, with depressed alae and carina. E. Flower after removal of the calyx, vexillum, and right ala; seen from the right side. References as in Fig. 94. Visitors.—Hermann Miiller gives the following.— A. Hymenoptera. Apidae: i. Apis mellifica L. 5, skg. B. Rhopalocera: 2. Epinephele hyperanthus Z., skg. (Bavarian Oberpfalz); 3. Hesperia lineola O., do.; 4. Lycaena aegon S. V. i, do. MacLeod observed the bee Halictus flavipes F. 5 in Flanders. 701. T. campestre Schreb. (Knuth, ' Bl. u. Insekt. a. d. nordfr. Ins.,' pp. 60-1, 153.)—This is a variety of T. procumbens Z. with larger dark-yellow flowers, which afterwards become brown. In the bud, the large vexillum closely, and almost completely, surrounds the other parts of the flower. On anthesis, the vexi
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