166 SUMMER FLOWERS. 



38. Primulaceous Plants. PRIMULACE^. 



* Ovary superior. 



f Calyx divided almost to the base ; (submerged aquatics with 

 divided leaves.) 



(186) Hottonia calyx five-parted ; corolla salver-shaped. 



ft Calyx tubular or campanulate ; (terrestrial plants with 



undivided leaves). 

 J Leaves radical. 



(187) Primula calyx tubular ; corolla salver-shaped ; stamens 

 five ; flowers on radical peduncles. 



JJ Leaves opposite or whorled, cauline. 



(188) Lysimachia calyx five-parted ; corolla rotate, with a five- 



parted limb ; stamens five ; capsule opening at top. 



(189) Anagallis calyx five-parted ; corolla rotate or funnel- 



shaped, with a five-parted limb ; stamens five ; capsule 

 opening all round transversely. 



** Ovary half superior. 



(190) Samolus calyx five-parted ; corolla salver-shaped, the tube 



short ; stamens five ; flowers in a terminal raceme. 



39. Plumbaginaceous Plants. PLUMBAGINACE.E. 



(191) Statice flowers panicled, arranged on one side of the 



branches in long rows, surrounded by scarious scales. 



(192) Armeria flowers in globular heads, surrounded by a 



common, imbricated, scarious involucre. 



40. Plantaginaceous Plants. PLANTAGINACE.E. 



(193) Plantago- ^-flowers hermaphrodite, in terminal heads or 



spikes. 



(194) Littorella flowers unisexual, solitary or in pairs. 



