STUDY OF ANOMALOUS FLOWERS. 



29 



Tulip tree we find a lengthened or spindle-shaped torus length- 

 ened according to the nature of t branch ( 35), and all covered 

 with the multiplied pistils. On the contrary, we have in the 

 Rose (35) and Lady's-mantle (38), an excavated torus, within 

 which the carpels are held, v tile the other organs are borne 

 upon its elevated rim. 



'Si. flower (magnified) of Myosnnis; a vertical section showing its elongated torus, etc. 33, The 

 dine, natural size. 34, Flower of Isopyrnm biternatum; vertical section, showing the convex or globu- 

 ,r tcn-us. etc. 35, Flower of Rose, showing its excavated torus. 



85. The disk is a portion of the receptacle raised into a rim 

 somewhere in the midst of the whorls. It is found between the 

 ovary and stamens in Paeony and Buckthorn. It bears the sta- 

 mens in Maple and Mignonette, and crowns the ovary in the 

 Umbelliferge. 



36 



R. Piponia Moutan. showing its very large dliK(d) sheathing the ovaries (p). 37, Pistil of the Lemot. 

 wiili its luise surrounded by the disk, d. 38. Section of flower of Alchemilla, showing its single simple 

 pistil, lar^'e disk, and excavated torus. 



86. Combined deviations are quite frequent, and sometimes obscure the typical charac 

 ter of the flower to such a degree as to require close observation in tracing it out. Th 

 tudy of such cases is full of both amusement and improvement. For example, the v 



