SUMMARIES OP THE HISTOLOGIC CHARACTERS, ETC. 



299 



figure, and selenite reactions. I. dorah shows even a 

 stronger leaning to the seed parent, closer resemblances 

 to the pollen parent being recorded in only the eccen- 

 tricity of the hilum and lamella. The seed parent of 

 these hybrids is the same and it shows in both hybrids 

 much greater potency than the other parent. In I. mrs. 

 alan grey the form, hilum, and indistinctness of the 

 lamellse lean to the seed parent, but the general charac- 

 ters of the lamellffi and the size of the grains incline 

 to the pollen parent. Among the qualitative reactions, 

 in those with iodine alone is there greater closeness to 

 the seed parent. /. dorah and /. mrs. alan grey have 

 I. cengialti as their pollen and seed parent, respectively; 

 in each hybrid this parent exhibits the lesser influence 

 on the histologic characters and qualitative reactions 

 of the hybrids. /. pursind shows, with the exception 

 of eccentricity of the hilum and qualitative reactions 

 with iodine, a closer relationship to the seed parent. De- 

 ficit and excess of development, mostly in histologic 

 properties, are occasionally noted; but individualities of 

 the hybrids are absent. 



The independence and vagariousness of the quantita- 

 tive reactions in relation to the qualitative reactions are 

 very striking in all of the sets. 



Gladiolus. (Table G 9.) 



The seed parent of G. colvillei shows throughout 

 the histologic properties and qualitative reactions, the 

 more potent influence on the hybrid, excepting in the 

 eccentricity of the hilum and the lamellae, in the former 

 respect being subordinate, and in the latter of equal 

 value, to the seed parent. Excess of development of 

 parental extremes was noted in the lamellEe, and indi- 

 viduality was recorded in the hydrochloric-acid reaction. 



In the quantitative reactions there is mostly a tend- 

 ency to sameness as both parents, together with some 

 incliaation to excess and deficit of development ; but, on 

 the whole, the leaning is rather toward the seed parent. 



Tkitonia. (Table C 10.) 



This hybrid in its designations shares about equally 

 in closeness to one or the other parent. In eccentricity 

 of the hilum, lamellae, and size it is closer to the seed 

 parent, but in form and character of the hilum closer to 

 the pollen parent. In the polariscopie figure, and in the 



selenite and iodine reactions it is closer to the seed 

 parent, but in all the other qualitative reactions it is 

 closer to the pollen parent. Exicess and deficit of de- 

 velopment and individualities were not noted. Curi- 

 ously, while in the qualitative reactions with the various 

 chemical reagents the leaning of the hybrid is to the 

 pollen parent, in the quantitative reactions the inclina- 

 tion is in all seven reactions to the seed parent. This 

 almost complete reversal of qualitative and quantitative 

 parental relationships is by no means uncommon, as will 

 be seen in other tables. 



Begonia. (Table Oil.) 



B. socoirana is the pollen parent in all four hybrids, 

 it belonging to the semi-tuberous group ; the seed parents 

 are horticultural varieties that belong to the tuberous 

 group. In all four hybrids there is among the histo- 

 logical properties a manifest tendency to a splitting 

 of the characters in their parental relationships (except 

 solely in the form of the grains) and to fluctuation of 

 given characters in different hybrids to one parent or the 

 other. The form of the grains in B. mrs. heal, B. julius, 

 and B. success is closer to the pollen parent, but in B. 

 ensign closer to the other parent. The hilum in charac- 

 ter is in B. mrs. Jieal, B. ensign, and B. siiccess closer 

 to the seed parent, but in B. julius closer to the pollen 

 parent; while ia eccentricity it is closer in all to the 

 pollen parent. The lamellae in character are in B. en- 

 sign and B. julius closer to the pollen parent, while in 

 number this property is in all four closer to the pollen 

 parent. In size, in common sizes it is in B: mrs. heal and 

 B. success closer to the seed parent, in the larger grains 

 in B. ensign closer to the pollen parent, and in propor- 

 tion of length to breadth in B. julius closer to the pollen 

 parent. The polariscopie figure is in B. mrs. heal closer 

 to the seed parent, but in the other three the same as 

 both parents or closer to the pollen parent. The selenite 

 reactions are closer to those of the seed parent in B. mrs. 

 heal and B. ensign; closer to those of the pollen parent 

 in B. success; and the same as both parents in B. julius. 

 The independence of polariscopie figure and selenite 

 reaction is illustrated in B. ensign. In the iodine reac- 

 tions the inclinations may be to one or the other parent, 

 but in B. julius there is a splitting so that the reactions 

 of the gelatinized grains are closer to the seed parent. 



Table C 12. — Richardia. 



