92 MISSOURI BOTANICAL GARDEN BULLETIN 
portion; peduncle rising 1 foot above the water, in cross- 
section showing 7 main air-canals circled by 14 smaller 
ones, these again irregularly surrounded by minute air- 
canals; sepals wedged, ovate, 4 inches long, 134 inches 
wide, hooded at the apex, thick and fleshy in texture, outer 
surface dark green striped with purple, less at the base, 
light pink on the margins, inner surface pinkish white, 
light green at the base, showing 10-12 nerves; petals 30, 
comprising three whorls; outermost whorl lanceolate-obtuse, 
slightly hooded at the apex, 334 inches long, ¥% of an inch 
wide, with the outer surface channeled longitudinally with 
green and striped with purple, thick in~ texture except 
along the light pink margins, and the inner surface light 
pink, 7-nerved; the inner whorls light pink, slightly acute, 
becoming shorter and narrower toward the innermost; 
stamens about 300; outermost whorl occasionally becoming 
petaloid, 1% inches long, with appendages ovate-oblong at 
the base, bright yellow, pink and pinkish white at the apex; 
the inner whorls becoming shorter and narrower toward 
the innermost, which are linear, yellow, and yellowish 
white at the apex; carpels 35-40, with carpellary styles ob- 
long-obtuse, introrse, dark yellow; fruit globose, containing 
more fertile seeds than N. “Mrs. Edwards Whitaker” but 
considerably less than N. castaliiflora; leaves of submerged 
seedling light green with reddish brown spots on the upper- 
most side, ovate to deltoid; first floating leaves orbicular, 
dark green spotted with greenish brown on the upper side, 
under side light green tinted with bluish brown, spotted 
with purple; developed leaves suborbicular, 14 inches across, 
peltate, with deeply sinuate undulated margins, upper sur- 
face dark green spotted with brownish purple, brownish 
toward the margins, the under surface light green in the 
center, pinkish toward the margins, spotted with reddish 
brown; basal portion of leaves overlapping, terminating in 
short acute lobes; sinus nearly closed. 
x NYMPHAEA “MRS. WOODROW WILSON” HORT. VAR. 
GIGANTEA, PRING, N. HYB. 
(Nymphaea “Mrs. Woodrow Wilson” Tricker 9 x N. 
castaliiflora Pring @ ) 
The viviparous habit of N. micrantha, the West African 
species, is a dominant factor transfused through N. Dau- 
beniana to the pistillate parent, of the hybrid. The pecu- 
liar leaf vegetation is important, enabling the increase of 
stock without the use of tubers. The latter in most cases 
is a slow means of reproduction peculiar to the Brachyceras 
group. The result of intercrossing N. “Mrs. Woodrow 
