28 



ELEMENTS OF STRUCTURAL BOTANY. 



pistil. The latter organ will then be found to consist of 

 a ring of coherent carpels, a rather stout style, and num- 

 erous long stigmas (Fig. 33). If you take the trouble to 

 count the carpels and the stigmas, you will find the num- 

 bers to correspond. As the seeds ripen, the carpels separate 

 from each other (Fig. 34). 



MALLOW. 



37. Compare now the structure of the Hollyhock (single 

 flowers should be selected) with that of the Mallow, and 

 write out a description. Musk-Mallow and Abutilon (a 

 common green-house plant) may also be examined with 

 advantage. 



38. The Order (Malvaceae) of which Mallow is a type 

 is very distinctly marked by the following characteristics : 



1. The sepals are always placed edge to edge (valvate) 



in the bud, while the petals overlap and are rolled 

 together (convolute). 



2. The stamens are numerous and monadefyhous, and 



their anthers are 1-celled. Although united at the 



