Vor. II.] WATER LILY FAMILY. 43 
2. Nymphaea rubrodisca (Morong) Greene. Red-disked Pond Lily. 
(Fig. 1528.) tae 
Nuphar rubrodiscum Morong, Bot. Gaz. 11: : } NV ez, 
167. 1886. 
Nymphaea rubrodisca Greene, Bull. Torr. 
Club, 15:84. 1888. 
N Tym phaea Fletchert Lawson, Trans. Roy. Soc. 
Canada, 6: sec. IV. 119. 1888. 
Floating leaves 3/-10’ long, 2/6’ wide, 
the sinus open or closed, sometimes pubes- 
cent beneath; submerged leaves generally 
present, membranous, orbicular; flowers 1/— 
114’ broad, yellow; sepals 5 or 6; petals di- 
lated upward, or obovoid, 3’’-4’’ long, less 
fleshy than those of the last; anther nearly 
the length of the filament; stigmatic disk 
crenate, bright red or crimson, 9-12-rayed; 
stamens in about 5 rows; fruit about 1’ long, 
contracted into a neck below the disk, 1/ 
thick. 
In ponds and slow streams, Lake Champlain, 
Ottawa, Ont., Adirondack Lakes of New York, 
to southeastern Pennsylvania and Michigan. 
May-Sept. 
3. Nymphaea Kalmiana HOSS ) Sims. Small Yellow Pond Lily. (Fig.1529.) 
Nymphaea lutea var. Kalmiana Michx. F1. 
Bor. Am. I: 311. 1803. 
Nymphaea microphylla Pers. Syn. 2:63. 1807. 
Nuphar Kalmianum R. Br. in Ait. Hort. 
Kew, Ed. 2, 3: 295. 1811. 
NV. Kalmiana Sims, Bot. Mag. Pl. 1243. 1809. 
Leaves 2/—4’ long, 1-3’ broad, the sinus 
open or closed, commonly more or less 
pubescent beneath; submerged ones al- 
ways present, membranous, orbicular, 
larger; flowers I’ in diameter or less, yel- 
low; sepals 5; petals thin and delicate, 2// 
long; stamens in 3 or 4 rows, narrowly 
linear, the anther one-fourth the length of 
the filament; stigmatic disk crenate or stel- 
late, 2/’-3/’ broad, 6-7-rayed, dark red; 
fruit ovoid, 6’’-7’’ long, with ashort neck. 
In ponds and slow streams, Newfoundland to southern 
New York and Pennsylvania, west to the Saskatchewan and 
Minnesota. Summer, flowering later than the others. 
4. Nymphaea sagittaefolia Walt. Arrow- 
leaved Pond Lily. (Fig. 1530.) 
Nymphaea sagitiaefolia Walt. Fl. Car. 155. 1788. 
Nuphar sagittaefolia Pursh, Fl. Am. Sept. 370. 1814. 
Floating leaves narrowly ovate or ovate-lanccolate, 
glabrous, obtuse, 8/15’ long, 2’—3’ wide; submerged ones 
numerous, similar, but membranous and commonly 
larger; flowers yellow, about 1’ broad; sepals 5; petals 
broadened above, 3’’ long; stamens in 4 or 5 rows, the 
filaments about equalling the anthers; stigmatic disk 
crenate, 11-15-rayed; fruit ovoid, not constricted into a 
neck, about 1’ long. 
In ponds, southern Indiana and Illinois, and in the Atlantic 
States from North Carolina to Florida. Summer. 
