STOVE AND GREENHOUSE AQUATICS. 
199 
Hypoxis aquatica (aquatic) is a small pe- 
rennial plant with yellow flowers : a native of 
the Cape of Good Hope. It belongs to the 
natural order Hypoxidacere. It should be 
potted in loam and peat, and set in shallow 
water. 
Hydrocera. — Of this genus one species, 
H. trijiora (three -flowered) should And a 
place in every collection of aquatics. It is an 
annual with piped floating stems, rising erect 
and branching, two feet above the surface, and 
furnished with linear lance-shaped leaves and 
pretty flowers, variegated with red, white, 
and yellow, and produced in July and August. 
It is a native of the East Indies, and belongs 
to the natural order Balsaminaceae. It should 
be placed in a large pot or pan in rich loamy 
soil, and the pots immersed about six inches 
under water : increased by seeds, which 
should be sown in the spring. 
Jussicea. — There are nearly a dozen species 
of this extensive genus introduced, mostly 
stove plants, and several of them biennials, all 
bearing yellow, somewhat insignificant, flowers. 
Some are Indian, and some American ; they 
belong to the natural order Onagraceas. They 
should be potted in rich soil, and set a mode- 
rate depth in the water. The biennials pro- 
pagate by seeds, the perennials by cuttings. 
Limnanthemum. — The species of Limnan- 
themums have been separated frcm the Villar- 
sias. They are perennial plants, and have the 
flowers growing attached to the leaf stalks. 
L. indicum (Indian) has roundish-cordate 
leaves, and white fringed flowers, produced 
from May to August. It is a native of the 
East Indies, and requires a stove temperature. 
L. geminatum (twin pedicelled) has small 
roundish-cordate leaves, and bears bunches of 
yellow flowers in June and July ; it is the 
same as Villarsia sarmentosa ; native of 
New Holland. L. lacunosum (pitted) has 
roundish-cordate leaves, full of little pits on 
the under side, and bears white blossoms in 
June and July : this species is dioecious and 
polygamous ; a native of North America, in 
Canada, and Texas. They belong to the na- 
tural order Gentianaceas. They are chiefly 
greenhouse plants, requiring large pots, rich 
soil, and deep water ; propagated by division 
or by seeds. 
Limnocharis comprises two handsome spe- 
cies. L. Humboldtii (Humboldt's) is a stove 
perennial, with floating, roundish, ovate leaves, 
and large primrose- coloured flowers of three 
obtuse petals, standing one on each stalk just 
above the water, and produced freely all the 
summer ; a native of Buenos Ayres, and 
succeeds in a cool stove or greenhouse. L. 
JPlumieri (Plumier's) has blunt oblong leaves, 
and bears umbels of pale yellow flowers 
throughout the summer and autumn ; it grows 
a foot and a half high, and is a native of 
Brazil. They belong to the natural order 
Butomaceas. They require to be put in pots 
of moderately large size, in rich loamy soil, 
and set a foot or foot and a half under water : 
they rapidly cover the surface of the water. 
Propagated by runners, or by seeds. 
Marica paludosa (marsh) is an upright 
stove perennial, growing about a foot high, 
with sword-shaped leaves, and producing 
pretty white flowers in July and August. A 
native of Guiana ; and belongs to the natural 
order Iridacese. It should be potted in peat 
and loam, and the pots half immersed : in- 
creased by division of the plant. 
Nelumbium. — The species of Nelumbium 
are splendid stove herbaceous perennials, with 
the habit of the water-lilies. N. speciosum 
(Sacred Bean of Pythagoras) has large peltate 
leaves, some of which float on the water, and 
others rise up three feet above it ; the flowers 
are rose-coloured, smelling of anise ; they rise 
above the leaves, and are produced from June 
to August : there are varieties whose flowers 
are white, and of intermediate tints : one 
variety called caspieum is from the mouth of 
the river Volga, in Astracan, and has pink 
flowers ; another called Tamara (Tamara, 
native name), from Malabar, also has pink 
flowers: the species is a native of the East 
and West Indies, China, Japan, and other 
places. Both seeds and roots are esculent 
and wholesome. N. luteum (yellow flowered), 
from Carolina and other parts of North Ame- 
rica, has yellow blossoms. N. jamaicense 
(Jamaica) has pale rose-coloured flowers, and 
is from Jamaica. N. tibetianum (Thibet) is 
recorded in Loudon's Magazine as having 
smaller, darker, and rounder flowers than 
those of N. speciosicm, but otherwise resem- 
bles that plant. They belong to the natural 
order Nelumbiaceas. They require to be 
grown in cisteras, or large pots or tubs, in 
rich loamy soil or mud ; to be kept dry in 
winter, and to have the depth of the water 
increased as they grow, so that when estab- 
lished they may have it from two to three 
feet deep ; they also require strong heat : 
propagated by seeds which should be sown in 
a temperature of 85 degrees, or by division. 
Neptunia (Water Sensitive). — There are 
four species introduced. N. natans (floating) 
grows two feet high, with bipinnate leaves, 
and ovate spikes of yellow flowers, produced 
from July to September : it is an annual 
stove plant, native of the East Indies and 
Cochin-China. JSf. plena (double) grows 
two or three feet high, with bipinnate leaves, 
and oval spikes of yellow flowers from July 
to September ; it is believed to be a perennial, 
and is found in all parts of tropical America. 
N. lacustris (lake) is much smaller than the 
