Ill 
membranaceous, variable in size, 170-800 /i., apical pore elongated 
to round, average 1o/i. diam., and bordered by slightly darker 
cells. 
Sporules hyaline, cylindrical, straight, 1-septate, not constricted 
at septum, sometimes 1-guttulate, 8-12 X 2-3 p. 
On Lemon stems. September and October, 1897. Lancaster, 
Victoria. October, 1898, April, 1899. Ardinona, Victoria. 
On decorticated wood of Orange. October, 1893. Lancaster, 
Victoria. 
The sporules are generally narrower than those of A. citricola 
and A. cinerea . Pcrithecia generally agree in colour with bark, 
so that they are difficult to detect with the naked eye. 
This fungus is the cause of a disease affecting a great many 
trees, particularly Lemons, in the districts mentioned. It starts 
about the collar as a brownish-black spot, working all round and 
up the stem till it eventually kills the tree. It may then appear 
on the decorticated wood, as in the case of the Orange. 
Several fungi were found associated with this species, viz., 
Fusarium incarnatum (Desm.), GibberelLa puticaris (Sacc.) 
Fhoma macrophoma , n. sp., and Fhomapunclispora, n. sp. (Plates 
IX., X., and Figs. 163, 164.) 
76. CITRUS CAM A ROSPORIU M. 
(Camarosporium citri , u. sp.) 
Large, black, ernmpent pustules on dirty-grey dead Orange 
twigs, along with Stictis radiata (Pers.). 
Peritheeia gregarious, sub-coriaceous, depressed lenticular, at 
first covered, then erumpent, finally superficial, Jmm. long, with 
circular mouth. 
Sporules very numerous, golden brown, oblong or ovoid-oblong, 
3-Beptate, with longitudinal septa, constricted at septa, some¬ 
what variable in shape, 15-19 x 9-1 l/i., average 17 X 9/x. 
On Orange twig. August, 1899. Armadale, near Melbourne. 
This species was remarkable for the large size of the peritheeia, 
which ultimately became quite superficial. (Figs. 165, 166.) 
77. CITRUS GLCEOSPORIUM. 
(Gloeosporium citri , Cooke and Mass.) 
Gregarious, erumpent, pale fuliginous. 
Pustules rather small, often confluent, cuticle splitting 
irregularly above. 
Conidia obtusely fusiform, on short conidiophores, at first 
nucleate or granular, hyaline, 20 X o-6p. 
On branches of Lemon. Victoria (Mrs. Martin). 
