430 THE STORY OF PLANT LIFE 



Genus. Scleranthus (Vol. Ill, p. 192). 

 Sub-Family 2. Silenoideae. 

 Tribe 6. Lychnidece. 



Genera. Agrostemma, Viscaria, Silene^ Lychnis 

 (Vol. II, p. 130), Melandryum, Cucubalus. 

 Tribe 7. Dianthece. 



Genera. Dianthus^ Saponaria. 



D. HETEROCHLAMYDEiE, With pvedommant hetero- 

 chlamydy. 



Order 10. Ranales. — Flowers spiral to cyclic, 

 regular or not, haplo- to heterochlamydeous, epi- to 

 hypogynous, usually with numerous stamens; carpels 

 numerous to one, usually free, rarely united. 



Sub-Order i. Nymph^eine^. — Flowers spiral as a 

 rule; ovules scattered over inner surface of carpels, but 

 sometimes solitary at the apex. 



Family i. Nymphseaceae (Introductory Vol., p. 49 ; 

 Vol. II, p. 79). — Flowers regular, solitary, bi-sexual, homo- 

 to heterochlamydeous ; receptacle convex or hollow and 

 united to gynoecium ; sepals 4-5 ; petals and stamens in- 

 definite ; ovary syncarpous, io-20-locular ; ovules nume- 

 rous, with 2 integuments. 



Sub-Family. Nymphaeoideae. 

 Tribe i. Nupharece. 



Genus. Nuphar. 

 Tribe 2. Tetrasepalece. 



Gejtus. Nymph^a (Introductory Vol., p. 51). 

 Family 2. Ceratophyllaceae (Vol. Ill, p. 262). — 

 Flowers solitary, axillary, haplochlamydeous, unisexual ; 

 perianth 6-12-partite ; stamens 6-12; carpel i; ovule i. 

 Genus. Ceratophyilutn (Vol. Ill, p. 264). 



