CuxNINGHAM.— The Uredinales, or Rust-fungi, of New Zealand. 627 
2. Uromyces otakou n. sp.* (Fig. 7.) 
0, I. Unknown. 
II. Uredosori epiphyllous, scattered, rarely linear, elliptical, up to 2 mm. 
long, bright orange-yellow, pulver erulent, surrounded by the ruptured epi- 
dermis. Spores globose or subglobose, 20-30 mmm. diam. ; epispore densely 
and minutely verrucose, 1-1-5 mmm. thick, hyaline, cell-contents orange, 
with 5-8 scattered germ-pores on one face. 
epe Teleutosori epiphyllous, кае, seldom confluent and forming 
dark chestnut-brown, up mm. long, pulvinate, compact, sur- 
каа а by ie ruptured epidermis. Spores obovate, 24—30 x 19-23 mmm ; 
apex round, seldom bluntly acuminate, thickened up to 12 mmm., base 
subattenuate, frequently rounded; epispore smooth, 2-2-5 mmm. thick, 
chestnut-brown ; pedicel persistent, tinted, up to x8mmm; germ- 
pore apical, obscure. 
H oa caespitosa Spreng. On leaves and sheaths. Herb. No. 363. 
Hn HL Routeburn Valley (Otago), 800m., W. D. Reid! 6 reef 1921. 
(Type.) II. Cashmere Hills (Canterbury), 400 m., W. D. Reid! 31 July, 
1921. Mount Judah (Otago), 800 m., W. D. Reid! 13 Dec., fom: 
e host is an indigenous species; it occurs also in Australia and 
Tasmania (Cheeseman, 1906, p. 907). The teleutospores are rare and diffi- 
cult to find; they occur, as a rule, near the base of the sheath. The 
uredosori are plentiful, but in dried material difficult to find, owing to the 
fact that they are epiphyllous and are covered by the halves of the leaves 
folding together when drying. This species differs from U. Dactylidis in 
the greatly thickened apex of the teleutospore, different shape, and stouter 
pedicel. The uredospores closely resemble those of Puccinia Poarum Niels., 
but may be separated by the somewhat thicker and verrucose epispore ; іп 
P. Poarum the epispore is densely and sharply echinulate 
3. Uromyces Microtidis Cooke. (Fig. 8.) Orchidaceae (2). 
Cke., Grev., vol. 14, p. 12, 1885. 
0. Spermogones amphigenous, associated with the aecidia, scattered, 
minute, erumpent,  honey-coloured. 
1. Aecidia amphigenous, scattered, minute, 100-150 mmm. diam., pale 
orange. Peridia cupulate, margins white, slightly expanded but not. revo- 
Sn dentate. A ne polygonal, 15-20 x 12-16 mmm. ; epispore hyaline, 
osse 
II. Uredosori similar to and indistinguishable from the teleutosori. 
Spores elliptical to obovate, 20-30 x 17-23 mmm. ; epispore sparsely and 
coarsely verruculose, tinted brown, 1-1-5 mmm. thick, with three equatorial 
germ-pores on one face 
ПІ. Teleutosori amphigenous, chiefly hypophyllous, elliptical, scattered, 
or aggregated into irregular groups, rarely confluent, bullate, up to 2mm 
long, pulverulent, long covered, finally becoming exposed by t the epidermis 
rupturing qme Spores subglobose, elliptical, or frequently 
obovate, 25—35 x 6 mmm.; apex acuminate, often with a hyaline 
apiculus, doen us to 8mmm., base attenuate, frequently rounded ; 
epispore coarsely warted or knobbed, 2-5-3 mmm. thick, chestnut-brown, 
* Latin diagnoses of new species are arranged in alphabetical order in an appendix 
at the end of Part І. 
