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Show ·180 LOBELIA FULGENS. CHAP. v. . TABLE LXX. Lobelia fulgens ( Pirst Generation). Height of Flower- Height of Flower- No. ofPot. stems on the Crossed stems on tbe Self-fer- Plauts. tilised Plants. I Inches. Inehes. I. 33 50 II. 36~ 38J III. 21 43 Not in full flower. IV. 12 35 ~ Not in full flower. The mean height of the flower-stems of the two crossed plants in Pots I. and II. is here 34 · 75 inches, and that of the two selffertiljsocl plants in the same pots 44 · 25 inches; or as 100 to 127. The self-fertilised plants in Pots III. and IV. were in every respect very much finer than the crossed plants. I was so much surpri. ed at this great superiority of tho selffertilised over the crossed plants, that I determined to try bow they would behave in one of the pots during a second growth. The two plants, therefore, in Pot I. were cut down, and repotted without being disturbed in a much larger pot. In the following year the self-fertili ed plant howod even a o-reator superiority than before; for the two tallest flower-stems produced by tbe one crossed plant were only 29~- and 30~ inches in hdgbt, whereas the two tallest stems on the one solf-fortili. ed plant were 49Ji- and 49* inches; and this gives a ratio of 100 to 167. Considering all the evidence, there cr:tn be no doubt that these self-fertilised plants had a great superiority over the crossed plants. Crossed and self-fertilised Plants of the Second Generation.-! determined on this occasion to avoid tho error of using pollen of not quite equal maturity for crossing and self-fertilisation; so that I squeezed pollen out of the conjoined anthers of young flowers for both operations. Several flowers on the crossed plant in Pot I. in Table LXX. were again crossed with pollen from a distinct plant. Several other flowers on the self-fertilised plant CHAP. v. LOBELIA FULG ENS. 181 T ABLE LXXI. Lobelia fulgens (Second Generation). Crossed Plants. Self-fertili ed Plants. No. of Pot. Height of Flower- Height or Flower-sterna. stems. Inches. Inches. I. 27 ~ 32~ 2G 26 ~ 24 ~ 25k 24a 26~ II. 34 36§ 26~ 2ss 25k 30k 26 32g III. 4-0~ 30~ 37 ~ 28g 32~ 23 IV. 34~ 29~ 32~ 28 ~ 29d 26 27 ~ 2"O2g v. 28~ 29 27 24H 25~ 23§ 24~ 24 VI. 33~ 44-§ 32 37 ~ 26~ 37 25 35 VII. 308 27~ 30~ 19§ 29§ 21 VIII. 39~ 23~ 37 i 23~ 36 25~ 36 25k IX. 33~ 19 ~ 25 16~ 25~ 19 2q 1ss Total in inches. I 1014 •00 I 921•63 |