. Handbook of flower pollination : based upon Hermann Mu?ller's work 'The fertilisation of flowers by insects' . Fertilization of plants. 6i6 ANGIOSPERMAE—DICOTYLEDONES 6 Hymenoptera, 5 hover-flies, 7 other Diptera, 4 Lepidoptera, and 3 beetles (Bot. Jaarb. Dodonaea, Ghent, v, 1893, P- 4^3); (Pyrenees), 2 Hymenoptera, 4 beetles, and II flies (op. cit., iii, 1891, p. 362). Smith (England), the bees CoUetes daviesanus K. and C. marginatus Z. Saunders (England), 4 bees—i. Colletes picistig^a Thorns.; 2. Prosopis cornuta Sni. ; 3. P. dilatata K.; 4. P. masoni Saund. Scott- Elliot (Dumfriesshire),
. Handbook of flower pollination : based upon Hermann Mu?ller's work 'The fertilisation of flowers by insects' . Fertilization of plants. 6i6 ANGIOSPERMAE—DICOTYLEDONES 6 Hymenoptera, 5 hover-flies, 7 other Diptera, 4 Lepidoptera, and 3 beetles (Bot. Jaarb. Dodonaea, Ghent, v, 1893, P- 4^3); (Pyrenees), 2 Hymenoptera, 4 beetles, and II flies (op. cit., iii, 1891, p. 362). Smith (England), the bees CoUetes daviesanus K. and C. marginatus Z. Saunders (England), 4 bees—i. Colletes picistig^a Thorns.; 2. Prosopis cornuta Sni. ; 3. P. dilatata K.; 4. P. masoni Saund. Scott- Elliot (Dumfriesshire), numerous Hymenoptera, flies, Lepidoptera, and beetles (' Flora of Dumfriesshire,' p. 95). 1454. A. Ptarmica L. (Herm. Muller, 'Fertilisation,' pp. 327-9 ; Knuth,' Bl. u. Insekt. a. d. nordfr. Ins.,' pp. 90, 158, ' Weit. Beob. u. Bl. u. Insekt. a. d. nordfr. Ins.,' p. 236 ; MacLeod, Bot. Jaarb. Dodonaea, Ghent, v, 1893.)—The heads of this species are larger than in A. Millefolium, but not so many of them are grouped together, and the two species are about equally conspicuous. Hermann Muller says that they occur in equal abundance, and flower simultaneously, in the same localities. Fig. 200. Achillea moschaia, Jacq. (after Herm, MiilJer). A. A head in the course of anthesis: a, stylar branches of ray-florets; d, do. of outer disk-florets in second (female) stage ; c, inner disk-florets, in first (male) stage. B. A single disk-floret in the first (male) stage : a, anther-cylinder ; gl, throat of corolla; ov, ovary; po^ pollen ; r, corolla-tube. C. Do. in the second (female) stage. Lettering as for B\ £y, stylar branches. D. End of one of the stylar branches. /, sweeping-hairs ; w, stigmatic papillae. E. Style with its branches rolled back. (A, B, C, S, x J- D, y. 80.) in Westphalia, where they are visited with equal frequency by the same insects, especially by species of Prosopis, which are chiefly attracted by the odour of the plant. In other places, e. g. Schleswig-Holste
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