658 . Transactions. 
species ; it appears to be rare, and confined to the one locality. The rust 
i in honour of Mr. Reid, who has collected the major number of 
the specimens in my herbarium.. Mr. Reid has had excellent op ortunities 
for collecting ; as assistant to Dr. Cockayne he has traversed practically 
the whole mountain-chain of the South Island, and has never failed to 
send interesting material; excellently preserved, from the localities visited. 
Moreover, all host plants forwarded have been determined by Dr. Cockayne, 
so that I have been fortunate in having all the host plants collected by 
‘Mr. Reid correctly named. 
This species is characterized by the thick longitudinally-striate epispore 
of the teleutospore. 
18. Puccinia Pruni-spinosae Persoon. (Text-fig. 38, and Plate 77, fig, 6.) 
bus Rosaceae (8). 
Pers., Syn. Fungi, p. 226, 1801. | 
Aecidium punctatum Pers., Ann. Bot. Usteri, vol. 20, p. 135, 1796. Puccinia 
Prum DC., Fl. Fr., vol. 2, p. 222, 1805. Aecidium quadrifidu: „ш 
Willd., Sp. Pl., vol. 6, 2, Uredo fusiformis Gachet, Act. Soc 
deaux, vol. 5, p. 232, 1832. Aecidium hepaticum Schw., Trans 
Am. Phil. Soc., ser. 2, vol. 4, p. 293, 1832. Uredo Pruni Cast., 
vol. 1, p. 27, 1 norum Fel., Jahrb. Ver. Nat. Nass., vol. 15, 
norum bh., Fu Eur d 
Puccin , „ No. 50, 18 1-8р% 
Kuntze, Rev. беп. Pl., vol. 3, p. 470, 1898. Aecidium dakotensis Отїй., 
Bull. Torr. Cl., vol. 29, p. 300, 1902. A. Aikeni Syd., Ann. Mye., vol. l, 
_ 334, 1903. Tranzschelia punctata (Pers.) Arth., Res. Sci. Congr. Bot. 
Vienne, p. 340, 1906. 
0. Spermogones amphigenous, scattered, conspicuous, honey-coloured. 
_ I Aecidia hypophyllous, scattered. Peridia at first cylindrical, dehise- 
ing into 3-5 lobes which lie parallel with the leaf-surface, margin broad, 
revolute, or more commonly flat. Spores subglobose, 18-26 x 15-23 mmm.; 
epispore closely and minutely verruculose, 1-5-2 mmm. thick, cinnamon- 
rown 
II. Uredosori hypophyllous, grouped on scattered yellow spots which 
are visible on the upper surface, cinnamon-brown, circular, pulverulent, up 
to 0-5 mm. diam., surrounded by the ruptured epidermis. Spores somewhat 
bluntly fusiform, 25-38 x 12-18 mmm. ; epispore sparsely and coarsely 
verrucose, more prominently below, 1-5 mmm. thick, apex thickened up to 
? mmm. an „bluntly acuminate, with 2-3 equatorial germ-pores on one 
face; intermixed with numerous capitate pale-yellow paraphyses, which 
16 mmm 
pulverulent, up to l mm. diam., surrounded by the ruptured epidermis. 
Spores oblong, elliptical, or somewhat obovate, 30-40 x 18-26 mmm. ; 
apex rounded, thickened up to 6 mmm., seldom not thickened, base 
e sp. cult. On leaves. Herb. No. 437. I. Christchurch 
(Canterbury), W. K. Dallas! 27 Nov., 1921. . 
