NYMPHiEACE^l, PAPAVERACE^E. 13 



2. NVMPHJi'A, Tourii. WATER-LiLY. 



1. N. OdOPa'ta, Ait. (SWEET - SCENTED WATER-LILY.) 

 Leaves orbicular, cleft at the base to the petiole, 5-9 inches 

 wide, often crimson underneath. Flower very sweet-scented. 

 Ponds and slow streams. 



Var. minor, Sims, has much smaller leaves and flowers, 

 and the latter are often pink-tinted. 



2. N. tubero'sa, Paine. (TUBER-BEARING W.) Leaves 

 larger and more prominently ribbed than in No. 1, reni- 

 form-orbicular, green on both sides. Flower not at all, or 

 only slightly, sweet-scented. Boot-stocks producing tubers, 

 which come off spontaneously. Mostly in slow waters 

 opening into Lake Ontario. 



3. NIJPHAR, Smith. YELLOW POND-LILY. 



1. N. ad'vena, Ait. (COMMON Y. P.) Leaves floating, or 

 emersed and erect, thickish, roundish or oblong, cordate. 

 Sepals 6. Stagnant water. Var. minus is more slender, 

 and has smaller leaves and flowers. Probably a hybrid 

 between this and the next. 



2. N. Kalmia'num, Ait. (SMALL Y. P.) (N.luteum,var. 

 pumilum, Gray.) Floating leaves usually not more than two 

 inches across, the sinus very narrow or closed ; the radical 

 ones very thin and with a wide obtuse sinus. Flowers hardly 

 an inch across. Sepals 5. Northward, in slow waters. 



ORDER VII. SARRACENIA'CELffi. (PITCHER-PLANT F.) 

 Bog-plants, easily distinguished by their pitcher-shaped 

 leaves, all radical. 



1. SARRACE'NIA, Tpurn. SIDE-SADDLK FLOWER. 

 S. purpu'rea, L. (PURPLE S. HUNTSMAN'S CUP.) Leaves 

 hollow, with a wing on one side, purple- veined, curved, with 

 the hood erect and open. Sepals 5, coloured, with 3 small 

 bractlets at the base. Petals 5, fiddle-shaped, curved over 

 the centre of the flower, deep purple. Ovary 5-celled, glo- 

 bose, the short style expanding above into a 5-angled 

 umbrella, with a hooked stigma at each angle. Flowers on 

 naked scapes, nodding. Bogs. 



