Nymphaeaceae 45 



Tribe 7. Diantheae. 6Vj:/^,r with no commissural ribs. 



Bracts immediately beneath capsule. Petals without 

 appendages. Embryo straight. 



Dianthus (including Tunicaf). 



Bracts not immediately beneath capsule. Petals 

 with appendages. Embryo curved. *Saponaria. 



d. Heterochlamydeae (Moss). Orders with 

 predominant heterochlamydy. (For c see page 

 40.) 



a. Apocarpy atui Hypogyny predomina7it. (For /!i see page 48.) 



Order 10. Ranales. Floivers spiral, spirocyclic, or 

 cyclic, haplo- to heterochlamydeous, hypogynous to 

 epigynous, actinomorphic or zygomorphic. Stamens 

 usually 00. Carpels 00 -i, usually free. 



Suborder i. Nymphaeineae. Flowers predomi- 

 nantly spiral. Ovules usually scattered over the inner 

 surface of the carpels but sometimes solitary at the 

 apex ( Cera top hyllaceae). 



Fam. I. Nymphaeaceae. Aquatic herbs. Leaves 

 floating, often peltate. Flowers solitary spiral, spirocyclic 

 or cyclic, homo- or heterochlamydeous, hermaphrodite, 

 actinomorphic. Flower-axis convex, or hollow and 

 united to gynaecium. P 6-co , A 6-co , G 3-00 free or 

 united, each with i-o) ovules on their inner surface. 

 Ovules with two integuments. Seeds often with aril. 

 Cotyledons thick. 



Subfamily Nymphaeoideae. Flowers spirocyclic. 

 Carpels 00 , with 00 ovules completely covering the septa. 

 Endosperm and perisperm present. 



t An ill-defined genus differing from Dianthus in having smaller 

 flowers and broad, membranous sepaline commissures. 



