104 
On dead twigs and thorns of Orange. July, 1899. Armadale, 
near Melbourne. 
The cupules or a-scophores resemble an Aecidium with the margin 
lacerated. They are sunk in the tissue of the bark with the white 
border spread out and radiately split, and the disc when seen in a 
favorable light is pale orange-yellow. 
Theasci when mature bulged considerably^towards the middle, 
reaching a breadth of 12/*. 
It has only hitherto been recorded from Tasmania and Queens¬ 
land. (Figs. 126, 127, 128, 129, 130.) ♦ 
61. YELLOWISH-SPORED GIBBERELLA. 
(Gibberelta pulicaris , Sacc.) 
Black erumpent pustules near to base of stem and seated upon 
Fusarium either solitary or usually in black mulberry-like clusters 
(Uram.). 
Perithecia sphaeroid or somewhat ovate, beautiful purplish-blue 
by transmitted light; membranaceous, tough, with minute 
rounded apical pore, 170-260/x. diam., some even reaching 300/x. 
diam. 
Asci elongated-clavate, shortly stalked, 8-spored, without 
paraphyses, 67-70 x 10-13/x. 
Sporidia 2-rowed, colourless, or with very faint tinge of 
yellow, subfusoid, 3-septate, occasionally constricted at septum, 
straight or somewhat curved, contents granular, 16-24 x 5-9/*., 
average 19-20 X 6-7/*. (coloured yellowish-brown by potassiuin- 
iodidc-iodine). 
Stems of (lying Lemon trees. October, 1898. Ardmona, 
Victoria. 
Stems of languid Orange trees. October, 1898. Doncaster, 
near Melbourne. 
One perithecium, which seemed to be immature (Fig. 132), 
contained a bundle of radiating filaments (Fig. 133), hyaline, fas¬ 
ciculate, filiform, multiseptate, occasionally branched, with finely 
granular contents, usually tapering slightly towards apex, 32-50 
X 2-4/t. (stained deep yellow by potassium-iodide-iodine). 
This species is invariably associated with Fusarium which in 
one case at least seemed to kill the tree. It spread considerably 
underneath the bark, bursting through and causing it to crack, 
and the cnespitose perithecia were seated upon it. 
G. saubinettii (Sacc.) has already been met with in Victoria on 
herbaceous stems, and is difficult to separate from this species, 
but the characters are those of the above, except that the sporidia 
are a little narrower than in typical specimens. 
