20 Transactions. 
Acaena novae-zelandiae var. pallida T. Kirk. Herb. No. 296. 
II. о Seatoun (Wellington), E. Н. Atkinson! G. Н. C. 
27 Jan., 192 
Acaena ovina A. Cunn. Herb. No. 296. II. Seashore, Seatoun 
(Wellington), E. Н. Atkinson! ©. Н. С. 27 Jan., 1921 
Distribution: Europe; Asia Minor; Siberia; Japan; North America; 
Australia. 
Two of the hosts are indigenous, A. novae-zelandiae var. pallida being 
endemic ; ovina has been introduced from Australia. (Cheeseman, 
1906, p. 131, 1073.) 
New Zealand form does not agree in all кеа with the 
European, differing mainly in the acuminate apex of the teleutospore. 
The cylindrical shape of the teleutospore, smooth, light-coloured wall, 
somewhat in the degree of roundness or otherwise of the apex, as a 
in the length of the pedicels, for in certain sori the spores may all be 
rounded at the apex, and in others they ma ac e; the 
pedicels may average 100 mmm. in length, or may be twice this length. 
Generally, the larger the sorus the longer the pedicels. 
Teleutospores are abundant in New Zealand, and in some collections 
on the same plant with Phr. subsimile, and occasionally even on the same 
leaf, the following method of separating the two on sorus characters may 
prove useful :— 
Teleutosori compact, shining-black, usually small .. Phr. Potentillae. 
Teleutosori pulverulent, greyish-black, usually large .. Phr. subsimile. 
It is difficult to separate caeomata from uredosori, as they generally 
closely resemble one another ; frequently sections are necessary to deter- 
mine the difference. In this species, however, the uredosori are generally 
surrounded by the ruptured epidermis, which persists for a considerable 
time; this feature is generally absent from the caeomata, or, if not 
absent, is invariably less noticeable. . 
5. Phragmidum subsimile n. sp. (Fig. 90.) 
0. Spermogones hypophyllous, sparse, scattered, pallid yellow. 
I. Caeomata hypophyllous, sparse, scattered, orbicular, 0-5-3 mm. 
diam., pulverulent, orange ; encircled by a dense layer of hyaline, clavate, 
incurved, persistent paraphyses. Spores subglobose, 18-22 mmm. ; epispore 
hyaline, densely and closely verrucose, 1-5-2 mmm. thick, cell-contents 
vacuolate, orange. 
III. Teleutosori zu apio scattered, elliptical, up to 2 mm. long, 
pulverulent, greyish- -black, taining very many spores in each sorus. 
Spores 5-7-celled, брат Ыы б, oblong-terete, 57-70 x 22-30 mmm. ; apex 
rounded, not thickened, often crowned with a prominent, eid e 
papilla, not continuous with the upper cell-wall, up to 10 mmm. long, 
base rounded, spore ы, narrowed above and below ; not вЫ 
at the septa ; wall chestnut-brown, 3-5 mmm. thick, sparsely and coarsely 
warted, warts hyaline, unequally distributed ; edicel persistent, con- 
tinuous with the spore, tinted above, hyaline below, stout, up to 100 m 
long, 6-10 mmm. thick, hollow, swollen to 18 mmm. at base, lower ‘half 
closely and minutely verruculose ; germ-pores 2-3 in each cell, obscure. 
