E. GRIFFOM. — GREFFAGE ET IIMllilDATION ASEXUELLE. 101 



Holianlluis annuiis sur Hi'lianliius la-tillorus (Soleil annuel sur Soleil vivace). 

 lleliantlius Iji'tillorus sur Ilclianlluis annuus (Soleil vivace sur Soleil annuel). 

 Helianthiis annuus sur llelianllius luberosus i Soleil annuel sur Toiiinambour). 

 Helianllius luberosus sur HeliaiiUius annuus ( rniiinambour sur Soleil annuel) 



Greffe simple. 

 Helianthus luberosus sur llelianllius annuus (Topinambour sur Soleil annuel) 



Greffe niixle. 

 lleliantlius luberosus non greffé. — Slolons allongés. 



II. IIVlililD.ATIoN. 



1. ll^IlHIliES m-: PI.MKNTS. 



I. Piment noir long. — Pimenl carré doux. — Hybride Long x Carré. — Hybride 



Carré < Long. 

 '2. Fruits de : Pimenl carré doux. - Piniciil iioii- long. - Hybride de \" généi'alion. 

 5. Fruits de : Pimenl noir long. — PiiiiiMil carré doux. — Hyliridc Carré x Long. 



— Hybride Long x Carré. 

 i. Fruits : a. — Les parents. 



/(. — Hybrides de l" génération. 



5. Fruits d'hybrides de '2' génération. 



'2. iiYBRinES d'auhkrcines. 



I. Solaiium ovigerum (.\ubergine blanche). ) Parents 



'2. Solaiium coccineum (Aubergine écai-late). ) 



7>. Hybride d'.\ubergine écarlate fécondée par Aubergine blanche. 



i. Rameaux de : Aubergine blanche fécondée par Aubergine écarlate. — Aubergine 



écarlate fécondée par Aubergine blanche. 

 5. Fruits : Aubergine écarlate. 



Aubergine blanche. 



Aubergine écarlate x Auberj^ine blanche. 



GRAFTING AND ASEXUAL HYBRIDIZATION 



SUMMAHV 



The nuicli dispuled question of Ihe existence of asexual hyliridization 

 occurring as tlie resuit of grarting- can only be discussed seriously if the i'ol- 

 lowing fundamental distinctions are maile: 



I st. a. The shoots which develop al'ter the opération are derived f'rom 

 buds already existing, on the stock or on Ihe graft, or from buds which are 

 formed after the opération, exclusively on the stock or graft. 



h. The shoots arise on the cushion of the graft, and are derived from com- 

 posite buds, producing a chiniœra, or a pseudo-hybrid (C)-alaego-i)iespilus, 

 Ci/lium AdantI, Bizarria, Solnninn. etc.), or perhaps from real hybrid buds; 

 i. e. buds resulting from a.sexual oonjugalion of cells, or from cells recipro- 

 cally influenced by the passage of certain substances. 



'Jnd. Those cases dealt wilh underi/;) concern phenomena which appear 

 lo be exceptional, and which hâve been the object of important researches. 



