X. 



209 



SUB-ORDER I. NYMPH JE ACE JE. 



(HYDEOCHARIDUM genera, Jussieu. NYMPH^EACE^E, Salisbury.} 



SEPALS 4-6. PETALS oo, plnri- seriate, hypogynous (Nuphar) or perigynous, i.e. 

 inserted at different heights on the torus enveloping the carpels (Nymphcea), or 

 epigynous, i.e. inserted on the top of the torus (Ewryale, Victoria, Barclay a), the 

 inner narrower than the outer, and passing gradually, in some genera, into stamens 

 (Nymphcea, Victoria). (In Barclay a the coherent bases of the petals are inserted on 

 the top of the torus which envelops the carpels, the calyx remaining free.) Filaments 

 often flattened (especially the outer) and sub-petaloid, usually prolonged above the 



anthers. CARPELS whorled, coherent, 

 and forming a several-celled superior 

 ovary (Nuphar), or half- inferior (Nym- 

 phcea), or inferior (Victoria, Euryale, 

 Barclay a); styles connate into a peltate 

 radiating stigma, longer *than the 

 torus, sessile or stipitate,' more or less 



Base of the seed, showing 

 the embryo^nveloped by 

 the albumpn (mag-.). 



Caliomba. Fruit. 



Cabomba Carolinaria. 



Cabomba. 



Vertical section of 

 a carpel (mag.). 



Cabomba. 



Seed, entire and cut longitudinally 

 (mag.). 



