Andrewsii, i ft., has, during summer, large deep blue flowers in clusters, the corollas closed at the mouth; G.
The corollas are obliquely funnel-shaped, of a dirty yellow or buff, marked with a close reticulation of purple veins.
The general name of polypetalous is given to corollas having separate petals, while monopetalous, gamopetalous or sympetalous is applied to those in which the petals are united.
In some polypetalous corollas, as that of the vine, the petals are separate at the base and adhere by the apices.
Amongst regular polypetalous corollas may be noticed the rosaceous corolla (fig.
Of irregular polypetalous corollas the most marked is the papilionaceous (fig.
Regular gamopetalous corollas are sometimes campanulate or bell-shaped, as in (Campanula) (fig.
Of irregular gamopetalous corollas there may be mentioned the labiate or lipped (fig.
In some corollas the two lips become hollowed out in a remarkable manner, as in calceolaria, assuming a slipper-like appearance, similar to what occurs in the labellum of some orchids, as Cypripedium.