(oe NYMPH ZACE. 29 
BRASENIA. 
rows. Filaments slender, the outer ones dilated at the sum- 
mit. Stigma sessile dilated. Ovule solitary, erect. Fruit at 
first somewhat fleshy, at length dry and coriaceous lunate-in- 
curved, dorsally carinate, ventrally excavated each side of the 
fleshy salient suture or ventral appendage. Embryo minute. 
A. triphylla DC. Syst. ii. 85. Rootstock creeping, clothed with glu- 
maceous scales: leaves ample,long-petioled,a foot or more high from a scaly 
base; leaflets broadly cuneate, 3-5 inches long, the outer margin irregu- 
larly and. coarsely sinuate,very fragrant when drying: scape solitary,equal- 
ing or surpassing the leaf. In Fir forests, Brit. Columbia to California. 
Orper II]. NYMPHAACE Endl. Gen. 858. 
Aquatic perennial herbs with trunk-like horizontal root- 
stocks or tubers, Leaves peltate or deeply cordate involute 
from both margins in the bud. Flowers perfect, solitary on long 
axillary peduncles. Stamens numerous. Ovules on the back 
or sides of the carpels, embryo small at the base cf fleshy albu- 
men, enclosed ina fleshy bag. 
1. Brasenia. Carpels 4-18, in a cluster, indehiscent, 2-seeded. 
2. Nymphea. Carpel only one, many-celled and many-seeded: sepals 5- 
12, concave. 
3. Castalia. Carpel only one, many celled and many-ovuled: sepals only 
- 4, plain. 
1. BRASENIA Schreb. Gen. 372. 
Aquatic perennial herbs with peltate leaves and purple flow- 
ers. Sepals and petals nearly alike, nearly oblong, dull dark 
purple hopogynous persistent,3-—4 of each. Stamens [2-18 hyp- 
ogynous. (filaments slender. Anthers oblong-linear. Carpels 
11-18, distinct, tipped with the linear one-sided stigma. Fruit 
a 1-2 seeded indehiscent pod. 
B. Schreberi Gmel. Syst. Veg. i, 854: B. peliata, Pursh. Fl. ii, 389. 
Stems ascending from a tuberous rootstock: leaves floating alternate on long 
slender petioles, elliptical, centrally peltate, light green above, red and when 
young covered with a clear jelly-like substance beneath; flowers 6 lines 
long. In ponds, Brit. Columbia to California, and east to the Atlantic. 
2. NYMPHAHA Roerh. Hort. Acad. Bat. 281. 
Herbs of shallow waters, sending up large and mostly rather 
leathery cordate leaves, and 1-flowered peduncles from large 
and creeping rootstocks in the mud beneath. Sepals 5-13,con- 
cave and roundish, partly colored. Petals numerous, some of 
the inner ones resembling sterile gtamens persistent. Stam- 
ens numerous, short, hypogynous, densely crowded around the 
ovary, at length recurving, persistent. Anthers truncate at the 
apex, the two linear cells adnate introrse. Ovary oblong or 
ovate, 8-20 celled. Stigma sessile, peltate, many-rayed. Fruit 
ovoid or flask-shaped indehiscent, with a firm rind and fleshy 
or pulpy interior. Cells many-seeded. 
