| OCR Text |
Show I I. I 196 ILLEGITIMATE OFFSPRING OF CHAP. v. capsules was only 35 · 9 seeds, with a maximum of 60 and a minimum of 8. Plant 12. This long-styled plant produced very few capsules and ten yielded an average of only 15 · 4 seeds, with a maximum of 30 and a minimum of 4. Plant 10. This plant offers an anomalous case; it flowered profusely, yet produced very few capsules; but these contained numerous seeds. Ten capsules yielded an average of 71· 9 seeds, with a maximum of 95 and a minimum of 29. Oon~ ddering that this plant was illegitimate and illegitimately fertilised by its brother long-styled seedlings, the average and ~he maximum are so remarkably high that I cannot at all understand the case. We should remember that the average for a legitimate plant legitimately fertilised is 90 seeds. CLASS III. Illegitimate Plants raised from a Shortstyled Parent fertilised with pollen from ownjorm mid-length stamen. I raised from this union nine plants, of which eight were short-styled and one long-styled; so that there seems to be a strong tendency in this form to reproduce, when self-fertilised, the parent-form; but the tendency is not so strong as with the long-sty led. These nine plants never attained the full height of legitimate plants growing close to them. The anthers were contabescent in many of the flowers on several plants. Plant 14. This short-styled plant was allowed during 1865 to be freely and legitimately fertilised by illegitimate plants deHcendod from self-fertilised mid-, long- and short-styled plants. Fifteen capsules yielded an average of 28 · 3 seeds, with a maximum of 51 and a minimum of 11 ; hence this plant produced only 33 per cent. of the proper number of seeds. The seeds themselves were small and irregular in shape. Although Ro sterile on the female side, none of the anthers were contahescent. Plant .15. This short-styled plant, treated like the last during CHAP. V. HETEROSTYLED TRIMORPHIC PLANTS. 197 the same year, yielded an average, from fifteen capsules, of 27 seeds, with a maximum of 49 and a minimum of 7. But two poor capsules may be rejected, and then the average rises to 32·6, with the same maximum of 49 and a minimum of 20; so that this plant attained 38 per cent. of the normal standard of fertility, and was rather more fertile than the last, yet many of · the anthers were contabescent. Plant 16. This short-styled plant, treated like the two la~t, yielded from ten capsules an average of 77 · 8 seeds, with c.t maximum of 97 and a minimum of 60; so that this plant produced 94 per cent. of the full number of seeds. Plant 17. This, the one long-styled plant of the same parentage as the last three plants, when freely and legitimately fertilised in the same manner as the last, yielded an average from ten capsules of 76 · 3 rather poor seeds, with a maximum of 8~ and a minimum of 57. Hence this plant produced 82 per cent. of the proper number of seeds. Twelve flowers enclosed in a net were artificially and legitimately fertilised with pollen from a legitimate short-styled plant; and nine capsules yielded au average of 82 · 5 seeds, with a maximum of 98 and a minimum of 51; so that its fertility was increased by the action of pollen from a legitimate plant, but still did not reach the normal standard. CLASS IV. Illegiti1nate Plants raised from a Mid-styled Parent fertilised w#h pollen from own-form longest stamens. After two trials, I succeeded in raising only four plants from this illegitimate union. These proved to be three mid-styled and one long-styled; but from so small a number we can hardly judge of the tendency in mid-styled plants when self-fertilised to reproduce the same form. ~:rhese four plants never attained their full and normal height; the long-styled plant had several of its anthers con tabescent. Plant 18. This mid-styled plant, when freely and legitimately fertilised during 1865 by illegitjmate plants descended from self-fertilised long-, short-, and mid-styled plants, yielded an a-verage from ten capsules of 102 · (j seeds, with a maximum of |
