The mutation theory; experiments and observations on the origin of species in the vegetable kingdom . ollected near Vucht, thesecond to a collection from Hintham.^ NUMRER OF LIGULATE FLORETS (l. F.) IN THE NETHERLANDS, L. F. 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 Vucht 0 1 13 5 3 8 18 78 37 22 11 17 2 3 3 0 Hintham 10998 15 14 33 94 101000 ^ Bcr. d. d. hot. Gcs., Vol. XVII, p. 87. 1 have already exhihitedthe variation in hoth localities united into a single curve in Vol. I(See p. 152, Fig. 2,2). The Origin of Clirysaiitlicniiim Scyctmii Flciiiiiii. 167 In all 221 and 104 flowers were exam
The mutation theory; experiments and observations on the origin of species in the vegetable kingdom . ollected near Vucht, thesecond to a collection from Hintham.^ NUMRER OF LIGULATE FLORETS (l. F.) IN THE NETHERLANDS, L. F. 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 Vucht 0 1 13 5 3 8 18 78 37 22 11 17 2 3 3 0 Hintham 10998 15 14 33 94 101000 ^ Bcr. d. d. hot. Gcs., Vol. XVII, p. 87. 1 have already exhihitedthe variation in hoth localities united into a single curve in Vol. I(See p. 152, Fig. 2,2). The Origin of Clirysaiitlicniiim Scyctmii Flciiiiiii. 167 In all 221 and 104 flowers were examined. Thecurves are mononiorphic and symmetrical. The same is true of this species in Thuringia. tlie following data derived from 1000 plants col-lected at Brotterode.^ DATA FROM THURINGIA. L. F. 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21Inflorescences 1 6 3 25 46 141 529 129 47 30 15 12 8 6 2 We may therefore assume that the mean number ofrays for the wild corn-marigold is 13. I investigated the mixed race occurring in botanicalgardens for the first time in 1892. The result proved to. 12 13 14 15 16 17 18 19 20 21 22 230 I 14 13 4 6 9 7 10 12 20 1 0 Fig. 30. Chrysanthemum segetum. Mixed crop. Curve ofthe ray-florets in the primary inflorescences of 97 indi-viduals in 1892. The upper series of figures gives thenumber of rays, the lower series the number of those in-dividuals possessing the scale character written above it. l)e a dimorphic curve (Fig. 30), which at the time wasthe first compound curve to appear in botanical had obtained the seed for the experiment by exchangefrom a number of botanical gardens. I mixed it thor-oughly and sowed it on a single bed, where 97 plants ^ F. LuDWiG. Ueher Vanafionscurven mid Variationsilachen, , Vol. FXIV, 1895, p. 5. Also F. Ludwig. Die pAanzUchenFariatiotiscuncii und die Gousssche Wahrscheinliehkeitseurve; samejournal, Vol. LXXIII, 1898, p. 71 (p- 16 of the oflprint). From the Archiv f. Entzvickel
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