38 



PRINCIPLES OF PLANT-TERATOLOGY. 



Willkomm. — "Zur Morpliologie cler samentragenden Schuppe 



des Abit j tiiieenzapfens." Nov. Act. Nat. Cur., Bd. xli 



(1880), pp. 329-344, pi. xxxiv. 

 Wittmack. — " Yier abnorme Birnen mid deren Bedeutung fiir 



die Erklarung dei* Pomaceen-Frucht." Verhandl. hot. 



Ver. Prov. Brandenb., Jahrg. xix (1877), pp. 140-145. 

 " Ueber eine durcliwachsene Birne und die Natur der 



Pomaceen-frucht." Ber. deutscli. bot. Gres., Bd. ii (1884), 



pp. 420-428. 



"Woes dell. — "The Structure of the Female ( Flower 3 in 

 Conifer®." Ann. Bot., vol. xiv (1900), pp. 39-82. 



" Abnormal ' Flowers J of Helenium autumnale L." 



Journ. Roy. Hort. Soc, n. s, vol. xxvii (1903), pp. 943- 

 955. 



2. FORKING AND FASCIATION. 



The term " fasciation " has already been defined 

 and the phenomenon explained as it affects vegetative 

 axes; it is essentially the same phenomenon where it 

 affects inflorescences and flowers, and what has been 

 said about it on earlier pages of this work will apply 

 equally well here. 



1. The Inflorescence. 



The phenomenon of Forking and Fasciation, as in 

 the stem, consists in its simplest form of a simple 

 dichotomy or forking of the axis, the two resulting 

 branches of which may be either equal or unequal. 

 This was observed to be such a frequent occurrence 

 in the inflorescences of such a number of specimens 

 of the cherry-lanrel (Primus Lauro-cerasus) in Kew 

 Gardens, being dependent merely on the vigour of 

 any particular raceme, the more vigorous and stouter 

 generally forking, the less vigorous remaining un- 

 divided, that the boundary line between so-called 

 " normal " and " abnormal " inflorescences became 

 completely obscured. Just the same may be said of 

 the inflorescences of Liriope and of the garden hya- 

 cinth. PL XXXII shows a good instance of forking 



