an 
VALLISNERIA. 401 VASCULARES. 
green leaves. All the Nettles thrive | coil above the surface of the water, 
most in a deep rich soil. while the latter are produced at the 
Us'nea.— Cryptogamia—A kind | bottom. Before, however, the an- 
of lichen that hangs down like a| thers burst to discharge the pollen, 
beard from the branches of old} the male flowers detach themselves 
trees, particularly Oaks, and has a| from their stalks and rise up to the 
very picturesque appearance. surface, on which they float lik: 
Uvora'ria.— Melanthacee.— Pe- | little white bubbles. After the po! 
rennial hardy plants with pale yel-|len has been distributed over th 
low flowers, natives of North A-| stigmas, the male flowers wither 
merica, which should be ‘grown in | and the spiral stalks of the female: 
a compost of peat and toa’ a pit | coil up again so as to draw the seed. 
about a foot square every way, be- | vessel under the water, that it ma: 
ing dug in the open border and filled | ripen at the bottom and burst when 
with the compost to plant them in. | just in the proper place to deposite 
If the subsoil be not good, the pit | its seeds. Nothing can be more 
may be made 4 little deeper, and a | beautiful than the whole arrange- 
layer of stones and brickbats may | ment ; and nothing can show more 
be put in the bottom. The plants | strikingly the admirable manner in 
are propagated by suckers, which | which the economy of nature is ear- 
they produce in great abundance. | ried on. 
Vatonta Oax.—Quércus Ai'gi- 
lops.—The acorns are enveloped in 
a curious leafy cup ; and the tree, 
which is generally of small size, is 
very handsome.—See Que’Rcus. 
Va npa.— Orchiddcee.—A bea 
tiful Epiphyte, which is made t 
type of a section from the. gre: 
number that are nearly allied to © 
Vv: 
| 
Vaccinium. — Ericdcee. — The 
Whortle Berry. Dwarf shrubs with 
pretty drooping heath-like flowers 
and generally showy fruit ; found 
generally wild on commons in Eu- 
rope and North America. V. myr- | It should be grown on the brane 
téllus, the common Bilberry, is the ! of a tree—-See OrcuipEous Epipr 
commonest species in England, and | TEs. 
there is a variety with white berries|_ Vant’Lua.—Orchiddcee.—A cree; 
in Germany. The Cranberry, V.|ing parasite, common in tropic: 
oxycoccus, Lin., is now called Oxy- | climates, which throws out roots - 
céccus palistris. every joint that penetrate into + 
VaLertan.—See VauLeria‘na. bark of the trees on which the pk 
Vaeria NA.— Valeridnee. — Pe-| grows. When grown in an orchid- 
rennial plants, mostly natives of |ecous house, these plants are fre- 
Europe, which will grow in any | quently fixed in a crevice in the 
common soil. The dwarf species} damp wall, whence they spread out 
are very suitable for rockwork. in different directions, catching hold 
VauisnE ‘nia. — Hydrocharidee. | of every object within their reach. 
-—-Water-plants, which succeed best | When thus treated and kept in a 
=: greenhouse, and which should | strong moist heat, the plants will 
e planted in a layer of loam at the | flower; but unless objects are near 
bottom of the cistern in which they | for their roots to attach themselves, 
are to be grown. The male and | to, the plants will never be strong 
female flowers are on different |and healthy. The native Vanilla is 
plants and the latter rise on long | used for putting into chocolate. 
spiral stalks, which gradually ari= | Vascu.a’rEs are plants, the leaves 
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