Puccinia Loranthaceae. 167 



Morrison states that this fungus deforms the leaf and produces a con- 

 cavity on the opposite side. He made this a variety of P. coprosmae Cooke, 

 and certainly there is a very close resemblance, but the sori in the latter are 

 generally in groups, and the apex of the spore is not quite so thick. 



No specimens of the aecidial stage were seen, but being on the same 

 host-plant as the teleutospores, it is included in this species. 



Darluca jilum Cast., is common on the teleutosori, although it is usually 

 only found on uredosori. 



(Plate XXIX., Fig. 258.) 



LORANTHACEAE. 



Loranthus. 

 97. Puccinia loranthicola Me Alp. 



I. Aecidia imbedded in raised brownish to dark brownish, often con- 



fluent cushions on one or both surfaces of leaf, orange ; pseudo- 

 peridia tubular, with white, reflexed, much torn margins ; peridial 

 cells oblong, with striated margins, 43-50 X 27-31 ^u. 



Aecidiospores ellipsoid to oblong or sub-angular, bright orange 

 yellow, decidedly echinulate, 37-56 x 22-31 //. 



II., III. Uredosori amphigenous, brownish, bullate, in scattered 

 groups, often arranged in circles and confluent, surrounding 

 central darker teleutosori, epidermis splitting lengthwise and 

 persistent. 



II. Uredospores orange yellow, ellipsoid to oval, obovate or oblong, 



coarsely echinulate, with 3-5 equatorial germ-pores on one face, 

 40-65 x 22-32 p, occasionally 80 X 22 /z; epispore 3-4J p thick. 



III. Teleutospores intermixed with uredospores, subhyaline, cylindrical 

 to clavate cylindrical, smooth, slightly constricted at septum, 

 rounded and slightly or not at all thickened at apex, tapering 

 slightly towards base, 65-94 x 15-24/z, occasionally 3-celled, 

 when about 86 ^ long ; pedicel hyaline, persistent, elongated up to 

 200 p. long, and swollen towards apex up to 14 p. 



X. Mesospores subhyaline and with elongated pedicel like that of 

 teleutospore, smooth, fusoid, hardly thickened at apex, 71-77 x 

 25-28 p. 



On living leaves of Loranthus celastroides Sieb., growing on Stringybark 

 (Eucalyptus sp.). 



Victoria Murramurrangbong Ranges, Jan., 1905 (Robinson). 



All the stages were found on the same tree, but the aecidia on separate 

 leaves. All the spore-forms are particularly large, a fact which probably has 

 some relation to the peculiar nutrition of the fungus, and the height at which 

 it occurs, some specimens being obtained fully 50 feet from the surface of 

 the ground. 



The aecidia are very conspicuous on raised cushions, with corresponding 

 depressions on the opposite side, where aecidia may also occur. 



The uredosori are of a ruddy brown, in isolated groups, generally 

 arranged circularly and with teleutosori in the centre. Puccinia loranthi 

 Speg., has only teleutospores, and it is doubtful if they are to be regarded 

 as such. P. macrocarya Rac. on leaves of Loranthus in Java has only aecidia 

 and teleutospores. 



(Plate XXXI., Figs. 268-271.) 



