. Handbook of flower pollination : based upon Hermann Mu?ller's work 'The fertilisation of flowers by insects' . Fertilization of plants. 326 ANGIOSPERMAE—DICOTYLEDONES i6. Syrphus balteatus Deg.; 17. S. ribesii L. C. Hymenoptera. Apidae: 18. Andrena sp. 5, repeatedly, po-cltg.; 19. Bombus terrester Z. $, freq., po-cltg.; 20. Eucera longicornis L. t>, vainly searching for nectar; 21. Halictus albipes F. 5, repeatedly, po-cltg.; 22. H. cylindricus i^. $, do.; 23. Megachile circumcincta .S'. 5. D. Lepidoptera. Tineidae: 24. Micropteryx, sp., numerous (Budd.). The following were recorded by th
. Handbook of flower pollination : based upon Hermann Mu?ller's work 'The fertilisation of flowers by insects' . Fertilization of plants. 326 ANGIOSPERMAE—DICOTYLEDONES i6. Syrphus balteatus Deg.; 17. S. ribesii L. C. Hymenoptera. Apidae: 18. Andrena sp. 5, repeatedly, po-cltg.; 19. Bombus terrester Z. $, freq., po-cltg.; 20. Eucera longicornis L. t>, vainly searching for nectar; 21. Halictus albipes F. 5, repeatedly, po-cltg.; 22. H. cylindricus i^. $, do.; 23. Megachile circumcincta .S'. 5. D. Lepidoptera. Tineidae: 24. Micropteryx, sp., numerous (Budd.). The following were recorded by the observers, and for the localities stated.— Lindmann (Dovrefjeld), a nectar-seeking moth. Herm. Miiller (Alps), 2 beetles, 5 flies, and 4 bees. MacLeod (Pyrenees), 2 short-tongued bees and a fly (Bot. Jaarb. Dodonaea, Ghent, iii, 1891, p. 323). 2395. P. montana Huds. (Schulz, 'Beitrage,' II, p. 198.)—The herbarium material of this species examined by Schulz bore a proportion of female flowers, and seemed to be protogynous and anemophilous. 2396. P. alpina L. (Herm. Miiller, ' Alpenblumen,' pp. 256-7; Loew, ' Bliitenbiol. Floristik,' p. 396 ; Kirchner, ' Beitrage,' p. 58.)—The reddish coroUa-. FlG. 347. Planlago alpina^ L. (after Herm. Miiller). A. A bud with projecting stigma, seen from the side. B. Do., with parts separated. C, A homogamous flower (x 7). D. Pollen-grains, further enlarged. E. A piece of the stigma. a, anthers; Ar, bract; Ji^ filaments ; ov^ ovary ; p, corolla- lobes ; J, sepals ; .?/, stigma. lobes render the anemophilous flowers of this species tolerably conspicuous, so that pollen-collecting insects are now and then attracted, and sometimes bring about fertilization. The course of maturation of stamens and stigma varies between homogamy and protogyny. The flowers observed by Kirchner near Zermatt were protogynous with persistent stigmas, which still remained receptive when the anthers dehisced. Visitors.—The following were recorded by the observer
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