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Show 90 VANDELLIA NUMMULARIFOLIA. CHAP. III. No. of Pot. III. IV. Totai in inches. TABLE XXV. Crossed Plants. 73 66~ 392•13 Sclf-fertili ed. Plants of the Second Generation. 66 75 30~ 62 52 339'00 NUMMULARIFOLIA. V ANDELLIA t f this J Scott from Calcut a o Seeds were sent to me by Mr. . feet and cleistogene *flowers. small Indian weed, which bea~s .:~erfectly developed, and never The latter are extremely sma '1 d The perfect and open nd yet yield plenty of. see 1 s. . th purple nlarks ; they expa ' II of a white co our Wl h been flowers are also sma ' th O'h the contrary as generally produce dseed,ev:~ i~u;rotected from insects. lT~~~ t d · and they o so d pear to be acap asser e ' rcated structure, an ap . d by me. have a rather co~p' ot carefully examme . t for cross-fertilisatiOn, bu\:Were~ficially, and it is possJble ~h~ They are not easy to fe~tlhJs; :hought that I had succecde.: some of the flowers wluc us! self-fertihsed undei e crossing were afterwar:s sp~::ac~~~se/ perfect flowers contm~:~ t Sixteen capsules rom ( 'th a maximum m . ~: .an average ninety-t~nee seedssul:~ from the self-fertilised 1 of 137) and thirteen cap d ( 'th a maximum m capsu e ' . d · t two see s Wl 1 this perfect flowers contame Sl;J'Q to 67. But I suspect tha nine one capsule of 135); or as 'd tal as on one occas~on p- I considerab e exce Ss was acct edn i't h seven se If-fe r· tihsed .c a d crossed cap~u!es dw~r7n c~~p:~~vewnumber), and thci ::~':d sules (both Inclu e ge number of seed. almost exactly the same avera . * an H rticle on the p re ;:, entu 5O. 'enus ID The convenient term of cle~s- 'Bot. Zeitung,' 1867, P· iogene was propo:;e u by Kuhn m CHAP, III. V ANDELLIA NUMMULARIFOLIA. 91 that fifteen capsules from self-fortilieed oleistogene flowers conotaf ieniegdh toyn-s eavne na.v erage sixty-four seeds, with a maximum in one Crossed and self-fertilised seeds from the perfect flowers, and other seeds from the self-fertilised oleistogene flowers, were sown in five pots, each divided superficially into three compartments. The seedlings were thinned at an early age, so that twenty plants were left in each of the three divisiOns. The crossed plants when in full flower averaged 4 · 3 inches, and the self-fertilised plants from the perfect flowers 4 · 27 inches in height ; or as 100 to 99. The self-fertilised plants from the oleistogene flowers averaged 4·06 inches in height; so that the crossed were in hejght to these latter plants as 100 to 94. I determined to compare again the growth of plants raised from crossed and self-fertilised perfect flowers, and obtained two fresh lots of seeds. These were sown on opposite sides of five pots, but they were not sufficiently thinned, so that they grew rather crowded. When fully grown, all those above 2 inches in height were selected, all below this standard being rejected; the former consisted of forty-seven crossed and forty-one selffertilised plants; thus a greater number of the crossed than of the self-fertilised plants grew to a height of above 2 inches. Of the crossed plants, the twenty-four tallest were on an average 3·6 inches in height; whilst the twenty.four tallest self~ fertilised plants were 3 · 38 inches in average height; or as 100 to 94. All these plants were then cut down close to the ground, and the forty-seven crossed plants weighed 1090 · 3 grains, and the forty-one self-fertilised plants weighed 887 · 4 gTains. Therefore an equal number of crossed and self-fertilised would have been to each other in weight as 100 to 97. From these several fll<lts we may conclude that the crossed plants had some real, thongh very slight, advantage in height and weiglit over the asneloft-hfeerr.t ilised plants, when grown in competition with one The crossed plants were, however, inferior in fertility to the self-fertilised. Six of the finest plants were selected out of the forty-seven crossed plants, and six out of the forty-one selffertilised plants ; and the former produced 598 capsules, whilst the latter or self-fertilised plants produced 752 capsules. All these capsules were the product of cleistogene flowers, for the Plants did not bear during the whole of this season any perfect flowers. The seeds were counted in ten cleistogene capsules I , |