. Handbook of flower pollination : based upon Hermann Mu?ller's work 'The fertilisation of flowers by insects' . Fertilization of plants. 2 ANGIOSPERMAE—DICOTYLEDONES Siphocampylus, but Farrer says that Lobelia agrees with this in all essential respects.) {C/.Y\g. 211.) Some of the species are described as self-sterile, L. fulgens (Gaertner), L. ramosa (Darwin), and L. cardinalis (Forke). 1688. L. Erinus L. (Delpino, ' Ult. oss.,' pp. 102-11; Hildebrand, op. cit.; T. H. Farrer, Ann. Mag. Nat. Hist., London, Ser. 4, ii, 1868, pp. 255-63; Knuth, ' Bloemenbiol. Bijdragen.')—Hildebrand says t
. Handbook of flower pollination : based upon Hermann Mu?ller's work 'The fertilisation of flowers by insects' . Fertilization of plants. 2 ANGIOSPERMAE—DICOTYLEDONES Siphocampylus, but Farrer says that Lobelia agrees with this in all essential respects.) {C/.Y\g. 211.) Some of the species are described as self-sterile, L. fulgens (Gaertner), L. ramosa (Darwin), and L. cardinalis (Forke). 1688. L. Erinus L. (Delpino, ' Ult. oss.,' pp. 102-11; Hildebrand, op. cit.; T. H. Farrer, Ann. Mag. Nat. Hist., London, Ser. 4, ii, 1868, pp. 255-63; Knuth, ' Bloemenbiol. Bijdragen.')—Hildebrand says that in this species the end of the style is often unable to break through the firmly closed anther-cylinder, inside which the stigmatic lobes then expand, and are self-pollinated. Normally, however, the pollen is swept out of the anther-cylinder during the first stage of anthesis by means of a stylar brush. During the second stage the end of the style emerges from the anther-cylinder and unfolds its two tolerably large stigmatic lobes, which are beset with papillae (cf. Fig. 211). 1. 2. Fig. 211. Lobelia Erj'inis, L.{{vom x\Sii.\iirtt\ (i) Flower in the first (male) stage, seen from the front: a, the pollen-covered anthers in the entrance of the flower. (2) Ditto, in the second (female) stage, after removal of the corolla: a, anther-cylinder, from which the receptive stigma {s) protrudes ; 7/, nectary, {-i,) Ditto, in the first stage, after removal of the corolla: «, nectary; j, the still immature stigma, covered with sweeping-hairs. Visitors.—The following were recorded by the observers, and for the localities stated.— Knuth (in his garden at Kiel).—A. Diptera. Syrphidae : i. Syrphus ^. 5; 2. S. sp.; 3. Syritta pipiens L. B. Hymenoptera. Apidae: 4. Andrena sp.; 5. Apis mellifica L. 5; 6. Bombus terrester -£. $; 7. Halictus minutus Schr. 5. C. Lepidoptera. Rhopalocera: 8. Vanessa urticae L.; 9. Pieris sp. All skg. Delpino, small bees (sp. of Halictus).
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