B8 MORPHOLOGY 



{Adhatoda Vasica), and kule-kharha {Hygrbphita 

 ■spinosd) ; (2) personate — j, when the throat of a bi- 

 labiate corolla is closed by a projecting pouch of the 

 lowef lip, as in Snapdragon and Lmdenbergta urtici- 

 folia \ (3) LiGULATE or strap-shapcd — H, as in the ray 

 florets of the Sunflower. The corolla, like the calyx, 

 may also be spurred — K. 



The terms used in describing the forms of corolla 

 ar6 also applicable in describing the forms of calyx. 



Ift sbmfe flowers there is on the throat of the calyx- 

 tube or corolla-tube a ring of slender filaments, as 

 in jhumka-lata (see fig. 193, b), or a petaloid mem- 

 branous ring, as in Pancratium, or lobed columnar 

 or petaloid process partially or wholly adherent to the 

 staminal column, as in akanda (see fig. 208). These 

 structures are known by the name of CORONA. The 

 ligular membrane attached to the face of free petals, 

 as in Pink, may also be classed with corona. 



The corolla, like the calyx, may be inserted directly 

 on the thalamus, as in Poppy, or on the top of the 

 pistil (ovary), as in pyara or Guava, and is said to 

 be HYPOGYNOUS (below the pistil) or epigynous 

 (above the pistil) respectively. In some flowers, as 

 in Rose, Pea, bak-phul, and jarool {Lagers troemia), 

 the calyx is inferior and the corolla is inserted on the 

 throat of the calyx-tube; the corolla then is said to 

 be PERiGYNOUs or round about the pistil. The terms 

 hypogynous and epigynous are often replaced by the 

 terms inferior and superior respectively. 



From the nature of their origin we have learnt that 

 the calyx, corolla, stamens, and pistil must be inserted 

 directly and in an acropetal order on the axis or thala- 

 mus, so that the calyx should always be inferior, the 

 corolla and the stamens hypogynous, and the pistil 

 superior. In fact, such is the construction of flowers 



