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Show CHAP. v. • LIMNANT RES DOUGLASII. 146 . . ed lan ts were 1neasured d sixteen self-fertihs p d 7 · 3 inches, and ::;ixteen crossed a~ l ves. the former average 100 to 83 In t' ,.. f thell' ea ' . h · ht or as · to the ~It ·~ilised 6. (J7 inches m e~ l~nt flowered before any the t~~f- ~s, excepting IV., a cro~~:c ~lllnts, when fully gro,;n, all f tEe self-fertilised plants. 'ts of their ripe capsules, with owneer eo agai.n mea surod. to the summl the following result.- TABLE LI. Lw. -manthes douglasii . -I ,- I Crossed Plants. I Self-fertilised Plants. No. of Pot. --1- - - -- Inches. Inches. 1.1 ~ I. 17 ~ 11a 11) ~ 13 11 - - 1- - II. 20 14 ~ 22 15 ~ 21 16 ~ 1sa 17 -- - -- - III. 15~ 11 ~ ' 17 § 10 ~ 14 0 - 1- - --- -- - IV. 20 ~ 1 3~ 14 13 18 12§ - - I - -- v. 17 14 ~ 18g 14 ~ 14~ 12 ~ - 1- ' - 207•75 Total in inches. 279•50 ·- I I - . t ow average d 17·46' and th·e 'l'he. sixteen crossed plan s nt'l ' d plants 13.85 inches ~n fifteen (for one h ad dI.e d) self-for 1 1se ·d e"r s that a l11· g b er, r atw height, or as 100 ~o 79. Mr. Gal~~ :~~~ a graphical rcpre~entawould be fairer, VIZ., 100 to 76. d adds the words very tion of the above measurement.' a~ Both lots of plants pro-od" to . the curvature thus forme . d as far as coulJ be gdou ced an abun d ance Qf seed-caps. ules, an · ' c 'l't 11 their fertii Y· .i udg~d by the eye, there was no difference 1 CrrAP. V. L UPINUS LUTE US. 147 XIV. LEGUMINOSJE. In this family I experimented on the following six genera, Lupinus, Phaseolus, Lathyrus, Pisum, Sarothainnus, and Ononis. LUPINUS LUTEUS.* A few :flowers were crossed with pollen from a distinct plant, but owing to the unfavourable season only two cro~sed seed. were produced. Nine seeds wore saved from :flowers spontaneously self-fertilised under a not, on the same plant which yielded tho two crossed seeds. One of these crossed seeds wa:-; sown in a pot with two self-fertilised seeds on the opposite side; the latter came up between two and three days before the crossed seed. The second crossed seed was sown in like manner with two self-fertilised seeds on tho opposite side; these latter also came up about a day before tho crossed one. In both pots, therefore, the crossed seedlings from germinating later, were at first completely beaten by the self-fertilised; nevertheless, this state of things was afterwards completely Teversed. The seeds wel'e sown late in the autumn, and the pots, which were much too small, were kept in the greenhouse. The plants in consequence grew badly, and the self-fertilised suffered most in both pots. The two crossed pln,nts when in flower during the following spring were 9 inches in hojght; one of tho self-fertilised plants was 8, and tho throe others only 3 inches in height, being thus mere dwarfs. The two crossed plants produced thil'toen pods, whilst the four self-fertilised pla.nts produced only a single one. Some othm· self-fertilised plants which had been raised separately in 1argel' pots produced several spontaneously selffertilised pods under a net, and seeds from these were used in the following experiment. Cr-ossed and self-Jertiliser:l Plants of the Second Generation.- The * The structure of the :fiuwerd of thio::~ plant, and their manner of fertilisation, have boon d ·scribed by H. Miill~.:r, 'Bot1·ucl1tung,' &e. p. 243. 1'he ilowors do not secrete fi·ee 11ectur and beel:l O"enerally vi:lit them f~r their pollen. Mr. Faner·, however, remarks ('Nature,' 1872, p. 499) that "there is a cavity at the buck and base of the VL'Xillum, in which I have not been H ble to find nectar. But the bees, which constantly vi it these tlower.:;, certainly go tu thi:; cavity for what they -vaut, and not to the staminal tube." L 2 |