488 
THE GARDENERS’ 
CHRONICLE. 
[Arri 9, 1887. 
flower-spike of this species, was of & goodly length, 
and still growing. 
. The species and rone i» А pak зонун 8 in ep 
callo: 
чары deed and vernixium 
markable heie Lupe was 
The 
found in {тал the plant carrying one spike of its 
green and brown blooms with pu st. 
* А large number о -sized plants of Odon- 
. R. alba there were numbers 
g flowers. 
Of г. keitat showing for a rare harvest of bloom 
pseudobulbs, pem of th 
sued at this nursery. dani Lowianum, and 
the dark ely, atropurpureum, 
bloom, as do the plants of C. eburneum. A plant of 
he hand 
tescens e bore a solid looking spike o 
Of miscellaneous plants noted may be mentioned 
i elegans, figured in the 
ronicle, of which a large stock exists; 
varieties of Clivia, of fine colours and n" 
at the nursery ; the Tillandsia Lindenian 
plant with a spike or two of flower, not ун 8 
ea ja 
bling the better known Glory of Sunninghill. M. 
THE GARDENIA-ROOT DISEASE.* 
Tuts disease is occasioned by Heterodera radi- 
cicola, a small worm belonging to the order of the 
parasite. О 
are Anguillola phate rix, vsus wide-spread plant- 
destroyer from our fields and gardens, and An- 
guillula aceti, from the vinegar-bottle of our dinner- 
table 
_ A great number of plants od same 
worm which affect PM Tees d the 
morbid condition cause 
similar in widely ну plants. Тһе occur 
rence of арун сі has been observed 
specially Lieopoli, Frank, 
by myself rs (e 
and Carl Mile) po ү iris ing plants 
Monocotyledons nua, Р. pratenais, op hog 
arenarius, Кыш pulser Saccharum officinal 
Musa rosacea, М. dacca, Phoenix dactylifera, snd 
Chamezrops humilis.t 
Dicot quen. — Clematis vitalba, Berberis vulgaris, 
& hortensis, Vitis Labrusca, Cistus aconiti- 
folia, Euphorbia cyparissias (?), Daucus Carota, 
lica sylvestris, A. arch lica, Carum carui, 
mpervivum tec S. glaucum, Sedum reflexum, 
crista-galli, Dodartia orientalis, 
Ixora aurea, I. flamme 
tabilis), Dipsacus fullonum @), Plantago lanceolata, 
Cichorium Intybus, Cirsium а eve, Sonchus ma- 
crophyllus and probably the same parasite occurs 
in many other plants, الوا‎ in hothouses. 
d y be made to Neue Helmintho- ° 
cecidie und deren Erzeugung, Berlin, 1883; to Frank, Ueber das 
Wurzel Aelchen, &c., Berichte d. n 
pies 145, 1884 üller. 
vale: бамы Saccharum offie 
rodera javanica (Ann. d. 
Bot. 4. Buitenzorg, vo vol. vi., p. ea 1886), but this assump 
к the таїсгозсорїс measurement of 
m 
It may be seen from our fig. 93 that the ашу. 
of the parasitic worm on the Gardenia ro 
tumour of 
ns alo "aba the fu M 
ength of the root oris localised i in small circum- 
scribed places in this organ, in which last case the 
X 
МР 
- 
Fig. 93.—DISEASED ROOTS OF GARDENIA, 
eformed roots assume an aspect reminding one of 
the poral moniliform root of Spiræa filipendula. 
The whole structure belongs d “the endle md 
varied i 
roductions, and it i rtainly a 
b roii of physiological 
growt 
ll pro 
interesting specimen of this 
pondera of the common mode of 
ES 
EA 
? 
ч 
Fig. 94.—DbISEASE OF GARDENIA ROOTS. 
ву making with a razor a thin transverse section e 
a thickened root, and submitti 
E. small spherical or 
irregular cavities aré dissemin v 
the morbid: tissues of the root. The ohn 
closed in these cavities ез are very different, accord- 
their age, and in one an and the same 
there ı fuit PM 
Р MEN 
minute oil шам, in others а great number 
f m br without young worms fully de- 
so-called ov; а-су, 
that is, the strongly swollen portion of the of 
a viviparous materna 1 аниа (see fig. 96 йы led with 
eggs, in different gradations of develo opm 
——— 
ions were t 
rather ree and ge pr ас пса was y re 
by secondary or cambial grow Now, it is 
M fact du еў woo zy i 
wt 
as 
mains bod the time 
Va peri cells 
in a 
parenchymatous, soft and sap-fille 
other cases of pa vg ological alterations of plants 
similar observations may be made; for example, in 
the reproduction of a mo d parenc chyma, instead 
of hardwood, in the case of po m disease of 
certain fee * and а in the sa 
may be found in the last case ЧОНУ 8 
i unaffected cambium; so we see 
the que 
y is mid boni that the cysts are nothing else Ж 
e body of t 
olo 
which 
y preparing the onn? — from the eggs W 
are to be found in such gr mbers in the Ore Cyt 
we find that the jst-hathing animals must be 0 
different loth and girth (fig. 96, с, 4, e). ihe 
meaning of this difference is not as cleared up, апа 
it ssible that it may bear upon the 8 
l 
root, with immature cysts fe, ‘ed 
o e, with eggs, in which the young worms are co! 
кыд е е morbid tissue; 2 р, pr! 95. 
: P d, peter х! 50. Fig. 99, 
egg; it d. e 
various а» all x e à ad 
À, young, mad è a у s, with eggs, X 19» 
after Müller. M. Bek vijerinck.. 
` [Dr. Beijerinck's госте have been — ons of 
duced. For other references 
e 
Berkeley; W. G- Smith, гуж Мїсһае1 оп н». dip e AC 
ber worms, AC M sig 
p. 220; xv. (1881), p. 381: imag EC d. A 
(1886), p. 500; xxvi. (1886), p 
leaves (1886), р. 41. Ер.] 
zm ue Ай а 
pi t t with u шей clearness in а 
recently saw —€— M n for which Iam im- 
Here, as formerly ; 
а parasitic tic fungus i 
