itque. adt 
idi dn ae 
20—1854.] THE GARDENERS' CHRONIC 
L E. 319 
cause or origin of their existe 
in the shell of them in form, ред аге Drm borne on the same | 
whieh is too hard to allow of inde entering it after being | footstalk, so 
м | 
that опе might ima — resuited from | 
o Cesa: 
that I know of who re 
| for its two other organs-of repredotion a мт Чокан 
to disti ongenerous 
lf the fungus. o Erysi siphe, we 
not be surprised at t tho prone which it does, Ке 
are all true parasites у} a ey always cause dis- 
seed] 1 
exactly йке the Beech) with eh yc aus tus dark- 
i ova of t 
ey 
H € 
@ 
= 
чыч їп — - 
hen tlie packet | in. Ше neighbourhoo d of Paris. I have notonly 
pd cote eie ed 2 и! |.һеш as other observers "һауе, sometimes pc am apri 
i ањ да globular, but І also perceived that among the | 
some Marge ones which wer 
icted genus sessile o byssus which 
from the most eareful e: — which w ke se obser vations „have led m 
o be — Меш n m 
— authors, who up to the present 
ем common untry 
rst stage, is not.in any way different from 
€ kai 'the diseased Vine. Тһе Ery- 
сыма ‚ present, == 
void terminal seeds, id also brown 
very 
Them 
r si 
f i тек 
numerous observations, made: орой оп de B. p pan- 
кетр muscle visible with reflected ligt,and m" а E чыш P h y Berberidis, 
AN N N 
olosericea, 
proearpa, and Martii, I Е т 
Pronasiri lam 
in {һе ва 
the fruits in question assume 
w 
e hairs 
resemble аа so much as not to be тайзе e by | 
^ | 
as authorities on the де eet. 
eases more or less serious. in A plants which: nourish 
em. 
f theinjurious effects produced by 
| Er мео Hum on the Hop, or how prejudieial E. 
s| — is to —— as well as E. clandestina to the 
common чб ннн and E. Ріві tolate Р. 
The disease, зу calied the mildew, so formidable 
о the Peach tree, 
ped Erysiphe pann 
| judicial to the 
in cor ages pyeni jidia, and .sporangi ere has me 
any hesit m ^ far as.I ce in. attributin 
зев. the atrophy, the "— mal 
за 
to be diseased re 
| the — supposition, noteiibranding its impii, 
o£ made not only in the case of all the other. 
а vid. or cultivated, em ma йг» э but 
those-at'whose expense Uredo, Ustilago,. 
pecies. on which they live, 
4 gical. condition of. the —— чы varying. with. ages. 
| situation, {веавопв, and circums 
some influence in "the 
: pt 
IN г 
\ their external charaeters only. neral proposition, which would in several be. 
NS Many myocologists still gr^ whether the ovoid seeds | justified by the. mode of life proper y of these. 
| ММ. whieh:cover bee a& white dust the thread-like. thallus, | fungi, appears no to. hold good when. their ener«. 
IN у оп which, at in assumes the е an universal. - 
LONM \ \ NE j of the aipin ppear, do mali belong t to these fangi. | plague, which'constitutes- w menon as far beyond. 
1 ES ES. They е that these seeds, and the white byssus | our explanation as it. is above our compr " 
whieh: p sthem, constitute together а distinet.and | M. Tulasne; in Comptes me qe а 1858. 
complete flint; x fertile Oidium, of which the Erysiphe| Тһе following facts we ime mentioned 
is only:a:. parasite, or mpanion. They|by M. Payenin support of tbe tih observations of. 
| maintain. that fungi have only опе set of reproduetive | M. Tulasn 
organs ; but. oá is eve 
Several 
; very stron 
i Erysiphes being consi 
| companions of various kinds of Odium; 
f existence obse: 
legs, опе on 
han: the res tat tha base оЁ the- dor mets A 
The mea X by our „correspondent: of: 
habits: "о this "of 
E. graminis and О. ас 
of: tion. 
€ suggestions — the eggs from whieh: they 
n the , and that the 
seetion of one 
filamen 
tion, it will be 
rom the —n hich очама 
AS 
ng pedicels- 
In the second place aant e ir 
no real parasitism i in. the case, and that therearenot two 
› but-only one en nna 
groe ration, ite is- suffici 
eded fruits- een — of, э 
so mueh in ;their- form. that. they present every 
organs. of 
ion, since he 
states: that: the "been kept two years befóre 
"were sown, and is seems quite 10ma:thas]. P the. most. 2i reproductive: organs” which 
ийй period. {һеу һай become infested with these |? iarnaig: these fungi. 
mites in.the cupboard or drawer where they had been | These penari fraita b being.thus presentin the. 
deposited, the the seeds affording a. Oidium in the shape of the separate articulations. of. the | 
P them till planted; and even till the.young, necklacesof sponse, and. on fertile eic aa tps нн м 
P Sprung But we ; e y identical. theip: y 
objection that pde P species do not k на unite-Oidium. to Erysiphe, and furnish the best proof 
апі уе are even inclined to suggest that the | taat and the same genus. other w 
misehief is attributable oth can | tlie orgaus in question do not, as M, Amici would induce 
us to believe, .solely constitute the ive 
att 
pepe 
ЈО ИЕ, "QE 
rved 
n the case of Erysiphe and:the so-ealled. Oïdiam— | 
E. pannosa: and O. sos een of 
i 
reful. examina: il 
ceived that кА —: the Erysiphe actui 
—— 
odit] 
е. 
From this fact it- Exe that Ery iphes, udin 
Б-р zn 
Mr.F. Mallot, of ph — in De the 
flowers of sulphur. wi t the mildew on 
the Peach tree, . Several eror edo and sanati 
М, Orbelin, have had recourse to the same 
€ have always paa efficacious, "p 
eeded in freeing Rose 
eans, апі - 
Aer These averages 
were struck бў the meth карм. employed in Ше 
| profession ; they were taies all fairness on. 
part, and I am prepared еч tain Pr A 
stantial accuracy, that they i 
substantially ect by any unprejudiced and 
every 
and 
ich I had. 
stated. In conformity sad p given me, Г · 
sA оа. 
lameters 
as af of trees much less 
again proceeded to the fi 
ied by a ge 
инн": | ike many atleast: three distin 
aL VINE MILDEW. p отой зо ор-то гуй нын tut 
which mildew known by —— of Oidium Tuckeri, | for- that purpose, In order. of-their successive 
work proves so destructive to Grapes, consists of a net- opment; һе бев amd most simple isthat which 
&l , us, pisa of white consists in naked spores, disposed in necklace-like rows, 
the wa, which cover reem and healthy parts of | which. I: сај. conspira: ;- then i of 
e an ' iom the formation of brown or forms; fallof i я ‘ап very fine " 
-—— F these 1 nts, which are all оп the andito whieh 1 have: given the ^ Of PYONIDIA ; and | 
M ` epidermis of У nourishing finally, the- perfect, gl blael:: spo аге | 
a forest of s ion qi erect, cel IE ia. whieh опе ог : sare] 
а seed, 
,, This being. admitted, it is. evident: thatthe- Oidium 
E. 
* To whatever species of Erysiphe the one which Ii es 
Vine be referred, its barrenness in sebane ps aw e оа 
speci 
conimunis, E. 
Езра: szeded fi y базай іо Шенон (а (Ыл resp spec, either owingto ihe plants w 
usually pedicellate, the | of propagation ; so most im: | the situations where these plants are growing, ог to 
coatings of. which are membranes composed of рават! басни сы stanees which have escaped our observatio 
to be filled up "im the ictor а Леа be readily ümderstood thut 
liki gani paienn the Vine consists in determining to filaments оё: the. тунына аге provided s riy! 
Zerminate, "These fruits are dae phe à Decem Now; umtil ita. чейии, керй, и s of suction. 
the 
determinati ni 
ewise- readily- 
aas ohana Бо terminal sroda just spoken оГ; ‘but their 
latter; resembliog 
of Erysi 
rous fruits. shall have been. observed, 
size often does. of it 
агасіег; for several are know 8: арі, 
whieh а frequently a same ~ 
hich bear t Dem a 
| unis. M. Gasparini, and afterwards 
which are y © 
more especially eed them in Erysiphe mr 
ch in the Vine mildew, where, n Ret n 
