yiYMPHJEACEM, PA PAVER ACB^. 13 



«. NYMPByE'A, Tourn. Wateh-Lily. 



1. N. odora'ta, Ait. (Sweet - scented Water-Lily.) 

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

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

 Ponds and slow streams. 



Yar. minOF, Sims, has much smaller. leaves and flowers, 

 and the latter are often pink-tinted. 



2. N. tubePO'sa, Paine. (Tuber-bbamng W.) Leaves 

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

 form-orbicular, green on both sides. Plower 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-Lilt. 



1. N. ad'vena, Ait. (Common T. P.) Leaves floating, or 

 emersed and erect, thiokish, 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 T. P.) {N. luteum, var. 

 pumilum, Gray.) Pleating 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. Plowers hardly 

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



Order VII. SARRACENIA'CELS. (PrrcHBB-PLANT F.) 

 Bog-plants, easily distinguished by their pitcher-shaped 

 leaves, all radical. 



1. SAKRACE'NIA, Tourn. SroE-SADDLE Flowek. 

 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. Plowers on 

 naked scapes, nodding. — Bogs. 



