r2 POLYANDRIA. MONOGTNIA. 



% vanolaris. S.JIava. Called 7V?,'7?i/>e/6 from the elon- 

 g-ation and tubiform appearance of the leaves. 4. rubra. 

 S. psittacina? Mlchaux 1. p. 311. 



A North American genus, partly maritime, not extend- 

 ing beyond the Aileshany mountains. The opportunity 

 ol examining the seeds of this genus have escaped me for 

 the present, but there can scarcely exist a doubt of the di- 

 rect association of Sarraccnia with any order which can 

 include the genus J\uphar. The singular deformity in the 

 leaves ought not to operate in any material respect 

 against its admission amongst genera of so different an ex- 

 ternal aspect. In J\epenthes the ascidia or tubes are 

 merely an appendage to the true leaves; and in the Cepha- 

 lotiis of New Holland we have an instance of leaves and 

 ascidia produced separately, both plants of verv distinct 

 orders from the present, it'is probable that other genera 

 will also be discovered at some period in the vast and 

 unexplored regions of the world, furnished with these sin- 

 gular appendages. 



568. NUPHAR. Smith, (Yellow Pond-Lily.) 

 Calix 5 or 6-leaved. Petals many, minute, 

 inserted with the stamina upon the receptacle, 

 externally nectariferous. /S^?!} a orbicular, ra- 

 diated, sessile. Capsule carnose, many-celled, 

 many-seeded, superior. 



Herbaceous aquatic plants; wit^i alternate floating- and 

 sometimes emerging leaves, more or less semiorbicular- 

 Iv cordate, at first involute towards the centre of the up- 

 per surface which resists the admission of water; ])etioles 



ture, surrounded more than half-v.-ay by a dilated and finely re- 

 ticulated lobe, more or less connivent over the surface of the 

 orifice; this operculoid lobe is covered with rigid hairs bent 

 downwards like the teeth of a card; the entrance of the orifice 

 for a few lines is verv smooth and appears resplendent like vel- 

 vet, but is not polished; the interior of the tube for about half 

 its length is not only smooth but pohshed, the lower half then 

 7)resents the same rctrorse rigid hairs as the operculum but 

 somewhat longer;— the insect descending thus far without 

 meeting with anv opposition, is now arrested on its return, and 

 becomes entangled by the feet; if it should succeed to extri- 

 cate itself in an exhausted state, it is again precipitated nUo 

 the former abyss inevitably to perish! 



