CuxNiNGHAM.—T he Uredinales, or Rust-fungi, of New Zealand. 19 
tip, up to 8 mmm. long, base rounded or slightly attenuate, spore slightly 
narrowed above and below; not constricted at the septa; wall sepia- 
coloured, 4—6 mmm. thick, coarsely and densely Nast, warts hyaline and 
more numerous apically ; ES ts пиа. continuous with the spore, 
hyaline below, tinted above mmm. long, 4—6 mmm. thick, not 
or slightly inflated basally, doni] half minutely and densely verruculose, 
germ-pores 2—4 in each cell, oe 
Host: Acaena novae-zelandia Kirk. On leaves. Herb. No. 766. 
1-11. Seashore, Seatoun (Wellington) E. H. Atkinson! G. H.C. 27 Jan., 
1921. Queenstown (Otago), 400 m., W. D. Reid! 18 Dec., 1921. (Type.) 
The host is endemie and is not uncommon throughout. (Cheeseman, 
1906, p. 131.) 
This rust is characterized by the large size of a teleutospores, large 
number of cells, dark and thick wall, and acuminate apex. The polices 
are more slender than in our other species, and are not swollen at the 
base. The large number of teleutospores in the sorus, and the manner 
in which they are compacted together, serve to separate this from any 
other species that may be present on the same plant. 
4. Phragmidium Potentillae P. Karsten.  (Text-fig. 89, and Plate 1, 
fig. 3.) 
Karst., Bidr. Finl. Nat. Folk, vol. 31, p. 49, 1879. 
Puccinia Potentillae Pers., u^ Fung., p. 229, 1801. Uredo sies nen Schum., 
Enum. Pl. Saell., vol. 2, p. 228, 180 803. Phragmidium obtusat t 
and Kunze, Deuts. a as vol. 5, p. 5, 1816. ено. Potentillae 
Schlecht., РІ. Berol, vol. 2, p. 121, 1824. 
0. Spermogones amphigenous, in small scattered groups, pallid yellow. 
I. Caeomata amphigenous, solitary or crowded, often confluent, elliptical, 
less commonly orbicular, 0-5—1-5 mm. long, pulverulent, orange; encircled 
by a dense layer of cylindrical, hyaline, incurved paraphyses. Spores sub- 
globose or elliptical, 20-26 x 15-22 mmm.; epispore hyaline, finely and 
closely verrucose, 1-5-2 mmm. thick, cell-contents orange. 
П. Uredosori hypophyllous, scattered, orbicular, 0-5-2 mm. diam., 
э ee orange, encircled by a layer of cylindrical or clavate hyaline, 
incurved paraphyses. Spores subglobose or obovate, 18-26 x 15-20 mmm. 
epispore hyaline, finely and closely echinulate, 1-5 mmm. thick, cell- 
ES orange; germ-pores scattered, numerous, cure. 
. Teleutosori amphigenous, chiefly Куро! Ий, scattered or con- 
ips orbicular, 0-25-3 mm. diam., pulvinate, compact, shining- black, 
naked, with numerous spores in each sorus. Spores 1-5-celled, commonly 
4, cylindrical, 55-95 x 18-25 mmm.; apex acuminate or rounded, not 
thickened nor papillate, base rounded ; саный at the septa; wall 
golden-brown, smooth, 2-4 mmm. thick; pedicel persistent, continuous 
with the spore, very long, up to 200 mmm. by 4-7 mmm. thick, hyaline, 
hollow, not or ‘slightly swollen at the base, lower third closely and finely 
verrueulose ; germ-pores 2-3 in each cell, conspicuous. 
Hosts 
ya Sanguisorbae Vahl. On leaves. Herb. Nos. 75, 765, 770. 
I. Karori (Wellington), 100 m., б. Н. C. 5 Mar, 1920. Ш. 
Routeburn Valley (Otago), 500 m, W. D. Reid! 8 May, 1921. 
II, III. Table Bay, Wakatipu (Otago), 850m., W. D. Reid! 
23 May, 1922. 
