STUDY OF ANOMALOUS FLOWEKS. 



29 



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

 ened according to the, nature of a 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, while the other organs are borne 

 upon its elevated rim. 



32. Flower (magnified) of Myosnrus; a vertical section showing its elongated torus, etc. 33, The 

 name, natural size. 34, Flower of Isopyrum biteniatum; vertical section, showing the convex or globu- 

 lar torus, etc. 35, Flower of Ros, 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 Pseony and Buckthorn. It bears the sta- 

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

 Umbelliferae. 



36 



36, Paeonia Moutan, showing its very large disk (d) sheathing the ovaries (p). 37, Pistil of the Lemon, 

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

 pistil, large 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. The 

 study of such cases is full of both amusement and improvement. For example, the $/ 



