MILDEW. 289 MIMOSA. 
will be delightfully fragrant, will dew generally attacks bulbs; and 
continue to be produced every sum- | when the Crocus is cultivated for 
mer, for a great many years in suc- | saffron, sometimes ihe entire crop 
cession. ‘is thus destroyed. Mazany remedies 
Many persons save their own for mildew have been recommended, 
seed of. the common Mignionette ; | but none can be depended on; and 
but it is hardly worth while to do so, the best means of preventing its 
as it is generally both good and. appearance seems to be keeping the 
cheap in the seed-shops. plants in a state of vigorous growth ; 
Mirpew.—Rose-trees and many as it is generally found only on such 
other plants are very apt to be plants as do not appear to have had 
affected in autumn with a white or | sufficient strength to resist its at 
brownish appearance on the leaves, | tacks. 
which is sometimes called the blight, Mizrort.—See AcuILie‘s. 
bat more properly rust or mildew. Miixvercu.—See Asrra’GALus. 
The cause of this appearance was| Muitxwort.—See Pory’cara. 
long unknown; and some supposed; M1'iua.—Asphodélee—A Mexi- 
it to be produced by unhealthy | can plant, with flowers of the most 
winds, and others that it was the brilliant and purest white, which 
work of insects ; it is now, however, | continue expanded day and night, 
satisfactorily proved to be a para- | till they fade, instead of closing at 
sitic plant or Fungus growing on | night, as is usual with plants of the 
the leaves, as Lichens and other) same family. They will grow in 
Fungi grow on the bark. any common soil, and only require 
» The parasitic Fungi known by | a slight protection from frost, such 
the general name of mildew are of | as covering with dead leaves, &c., 
three kinds, viz.: those that grow | during winter. 
on the surface of the leaf, those Micro‘n1a. — Orchidicee. — A 
which form under the epidermis or | very beautiful epiphyte from Brazil, 
outer skin, and those that attack | with its flowers on erect stems, like 
the root. The first kind may some-| those of the Cattleya, which. this 
times be removed by abundant wa-| plant somewhat resembles. Though 
tering ; which not only gives vigour | an epiphyte, it is generally grown 
to the plant, but actually tends to | in England in a pot, in loam mixed 
loosen the hold the Fungus has; with sand and rubbish, and it re- 
taken of the leaves ; but the second | quires the same treatment as other 
kind can only be stopped in .ts ca- | orchidecus epiphytal plants, which 
reer by the removal and burning | wil! bear being grown in pots. 
of all the infected leaves; and the | Mimo'sa.— Lezuminése.—Tothis 
third generally occasions the death | genus belong the Sensitive Plant, 
of the plant. The different kinds | of which there may be said to be 
of Uredo (from ure, to burn or) three species, the leaves of ail of 
scorch), which look as though the} which shrink to the touch, viz.: 
under side of the leaves were cov-| M. sensitiva, a native of Brazil, 
ered over with a brown powder, and: growing about one foot high, with 
the different kinds of Aécidium which | pale ball-like pink flowers ; M. pudz- 
rise like pimples over the leaves, and,j ea, a native of Brazil, growing about 
burst when ripe, are the most de-| one foot high, with white fiowers; 
structive. The smut which attacks }and M. casta, a native of the East 
the com crops belongs to the first | Indies, growing about two feet high, 
of these genera, and the Barberry| with pale yellow flowers. MM. pu- 
mildew to the last. The root mil-! dica is the Sensitive Plant most cul- 
25 wet 
