. Handbook of flower pollination : based upon Hermann Mu?ller's work 'The fertilisation of flowers by insects' . Fertilization of plants. 534 ANGIOSPERMAE—DICOTYLEDONES ]MacLeod (Belgium) saw a hawk-moth (Deilephila sp.). 1223. L. tatarica L. (Herm. MuUer, 'Fertilisation,' p. 297.)—This Siberian species, cultivated in our public gardens and so forth, bears flowers with concealed nectar. Hermann Miiller says that the corolla-tube is 6-7 mm. long, and secretes nectar in a shallow pouch at its base. The bright red flowers are homogamous; the anthers project a little beyond the stigma. Insects, wh
. Handbook of flower pollination : based upon Hermann Mu?ller's work 'The fertilisation of flowers by insects' . Fertilization of plants. 534 ANGIOSPERMAE—DICOTYLEDONES ]MacLeod (Belgium) saw a hawk-moth (Deilephila sp.). 1223. L. tatarica L. (Herm. MuUer, 'Fertilisation,' p. 297.)—This Siberian species, cultivated in our public gardens and so forth, bears flowers with concealed nectar. Hermann Miiller says that the corolla-tube is 6-7 mm. long, and secretes nectar in a shallow pouch at its base. The bright red flowers are homogamous; the anthers project a little beyond the stigma. Insects, while probing for nectar, touch the stigma with one side of their heads and the pollen-covered anthers with the other. When visits are repeated crossing is favoured, though, of course, self-pollina- tion may also be effected. The latter may also take place automatically, for it is not unusual to find flowers in which the stigma touches one or two of the anthers. Visitors.—The following were recorded by the observers, and for the localities stated.— Herm. MuUer (H. M.) (' Weit. Beob.,' p. 235) and myself (Kn.) (' Bloemenbiol. Bijdragen').—A. Diptera. Syrphidae: i. Rhingia rostrata Z. (Kn., H. M.), very common, skg. and po-dvg. B. Hymenoptera. Apidae: 2. Andrena albicans. Fig. 176. Lonicera nigra, L. (after Herm. Muller). A. A pair of (lowers, seen from the front. B. Lower part of a flower in longitudinal section (x 7). ?/, nectary. Mull. % (H. M.), vainly trying to suck ; 3. Apis mellifica L. 5 (Kn., H. M.), freq. skg. ; 4. Megachile centuncularis L. $ (H. IM.), skg. Alfken (Bremen), 3 humble-bees— I. Bombus derhamellus K. } ; 2. B. sylvarum Z. 5 ; 3. B. lucorum Z. 5 and 5- Mora- witz (St. Petersburg), 2 leaf-cutting bees, freq.—Megachile willughbiella K., and M. circumcincta K. iza^. L. Xylosteum L. (Herm. Muller, 'Fertilisation,' pp. 297-8; Kerner, 'Nat. Hist. PI.,' Eng. Ed. i, II, p. 278.)—Hermann Muller describes the yellowish- white flowers of this species as
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