416 Transactions. 
Treubvi Solms.), on Polygonum cinense from Java; but his combination 
cannot be aecepted, for U. Treubii is a synonym of U. emodensis Berk., 
according to Massee (1899). I cannot say whether it should be placed in 
Elateromyces, for I have not examined specimens. 
KEY To SPECIES, 
Sori olivaceous m ўз 3. E. olivaceus. 
Sori black, or nearly so. 
On Gahnia ES af 25 .. 1. Е. endotrichus. 
On Carex n uF at .. 2. Е. niger. 
1. Elateromyces endotrichus (Berkeley) n. comb. 
Ustilago endotricha Berk., Fl. N.Z., vol. 2, p. 196, 1855. 
ori in inflorescences, elliptical, black, pulverulent, intermixed with 
numerous long colour : 
Spores globose, 5-7 mmm. diam., epispore minutely and closely verru- 
culose, blackish olive. 
Host: Gahnia sp. In inflorescences. North Island, Sinclair. (Type in 
Herb. Kew.) 
Distribution: New Zealand. ; 
Only the single collection now at Kew (as Ustilago) has been made of 
this species. It is closely related to the following, which may possibly turn 
out to be the same ; ave separated Æ. niger principally on account of _ 
the larger spores, and especially the very numerous black elaters. 
E. endotrichus has been recorded from Ceylon, but Petch (1912)—to 
whose paper I am indebted for the description of the spores, given above 
—states the Ceylon species is E. (Ustilago) olivaceus. 
The method of germination is unknown 
A 
2. Elateromyces niger n. sp. (Text-figs. 11, 28, and Plate 44, fig. 1.) 
elliptical, and up to 6mm. in length; intermixed with very numerous 
conspicuous elaters, black in mass, blackish-olive individually, which may 
attain a length of 15 mm. but are commonly less, averagin mm. 
Spores globose to shortly elliptical, 6-9 x 5-7 mmm. ; epispore minutely 
and moderately verruculose, dark olive, 0-75 mmm. thick. 
Host: Carex dipsacea Berggr. In panicles. Herb. No. 311. Pen- 
carrow (Wellington), sea-coast, E. H. Atkinson! 10 Feb., 1921. (Type.) 
The host is an endemic species, occurring throughout the lowland areas 
of both Islands (Cheeseman, 1906, p. 822) 
is is separated from the following species on account of the smaller 
and more regular spores, black colour of the sori, elaters, and spores, and - 
the conspicuous elaters, ese latter are so numerous as to give the sort 
à woolly appearance, as if a small tuft of hair had been caught and held 
in the position occupied by the sorus. 
н т to 
being produced. This is elliptical in shape, and about the same length as 
the spore. Shortly after its formation it becomes detached and functions 
solution (soil extract). 
