3 
(in the North Island plo All my experiments with sulphur and 
d. Ker has 
lime have faile gail used in winter has alone been of any use, 
and that has been u lj m n winter without killing the trees. The 
fungi of New Zealand are ie an on, an pers destructive, but this is the 
worst, aoe particularly as it is confined t to dry soils. ere I am now 
v ithi ears, an a 
ai 
oidium of the vine are terrible pests in New Zealand, and the ies 
ve more to fear from fungus growths than insect pests.” 
As previously stated, the material received from New Zealand 
"was, in the first instance, referred to Dematophora necatriz. Further 
development of the fungus, and the receipt of additional fruiting 
specimens from the same country, showed that this was a mistake, 
neither does the fungus belong to any known species. It will, 
therefore, be described as new, under the name Rosellinia radiciperda. 
On arrival, the diseased roots and infected soil were permeated 
‘square and six inches cw were filled to within an inch of the top 
with sterilized leaf-m A thin layer of the infected soil was 
kled NET Ede Pha cs a 
) ont 
- the root of an * Orange Pippin " apple tree ne trust into the soil 
of one box, and two beec — ngs planted in "ibo 6 er. nally the 
boxes were covered with 8 to prevent Wein from floating 
“spores of fungi, kept damp, at placed at the foot of a wall having an 
eastern aspect, "where they remained from June till the end of August. 
t 3 
zi 
e 
microseo: e strands of mycelium showed pear-shaped 
swellings at intervals—hitherto considered as characteristic Dt. raris 
a necatriv—represented on the plate, fig. 7. Viala states that in 
D. necatriz these swollen oce ually become globose and free, if 
the mycelium is kept very wet, and form reproductive E AUS: 
spores— capable of germinating and producing new mycelium. Iw 
not successful in producing this result xd the mycelium of the New 
fungus, although presumably, fro bia peg this failure may 
‘be due to a lack of some essential factor. T. a still later stage, numerous 
minute sclerotia burst through the cortex of the roots, which i in course 
of time bore clusters of erect stems, each eomposed of a fasciele of 
parallel arem which bear conidia at their much-branched tips, as 
represented in figs. 8, 9, 10. Scattered at intervals amongst the 
sclerotia were minute black bodies, which proved to be a on form of 
fruit, known as pycnidia, and containing minute spore-li 
stylospores—in their interior, (figs. 11, 12). The stylospores germinated 
and produced a delicate mycelium within twenty-four hours when sown in 
ure water. The sameis true of the conidia previously mentioned. The 
highest or wget condition of fruit was not produced on the roots, 
owing bises o their disintegrated condition, a more durable matrix 
being essential for de development. During t the period of this inves- ` 
l of New 
S. as received P Kew, 2nd MEA 
umber was a species of Ros Realna ti marked “at the base of a fallen 
u decayed apple tree.” Carefu : examination of this anin revealed 
A 2 
