CuxNINGHAM.— The Uredinales, or Rust-fungi, of New Zealand. 21 
Hosts :— 
Acaena Sanguisorbae Vahl. var. pilosa T. Kirk. On leaves. Herb. 
Nos. 443, 767, 768. І, ПІ. Macraes (Otago) 600m., W. D. 
Reid ! 98 Nov., 1921. Queenstown (Otago), 650 m., W. D. Reid ! 
18 Dec., 1921. (Type 
Acaena Sanguisorbae Vahl. Herb. No. 769. I, III. Table Bay, 
Wakatipu (Otago), 850 m., W. D. Reid! 23 May, 1922. 
The host species A. Sang wisorbae is indigenous and widespread; it 
occurs also in Australia, Таана, and Tristan d'Acunha; the variety 
pilosa is endemic, and is not uncommon. (Cheeseman, 1906, p. 13 
This species somewhat resembles Phr. Sanguisorbae Schroet. (fig. 91), 
but differs in the differently-shaped, broader*teleutospores, in there being 
5—7 cells in the spore instead of 2-5, and in m much longer pedicels. The 
teleutosorus characters, too, are quite differen 
This species serves as a connecting- "ink between Phr. Acaenae and 
Phr. Sanguisorbae; and, of the New Zealand species, one would imagine 
the ancestral form to have been of the Phr. Sanguisorbae type, from which 
arose in succession Phr. subsimile, Phr. Acaenae, and finally Phr. novae- 
t : Я 
readily hybridize, and that the so-called species :4. Sanguisorbae is in 
reality a composite species. This would partiy account for the fact that 
on this species as many as three species of Phragmidium occur, whereas on 
other well-defined host species, and evén varieties, one rust only i is found. 
I am indebted to Dr. Grove for specimens of- Phr. Sanguisorbae, from 
which fig. 91 has been drawn. 
6. Hamaspora Koernicke. 
Koern., Hedw., vol. 16, p. 23, 1877. 
Autoecious. Cycle of development includes 0, II, III. 
permogones scattered, flattened- -globose, subcuticular, associated 
with the uredosori 
II. Uredosori without peridia, definite, erumpent, encircled by a dense 
layer of hyaline incurved paraphyses.  Uredospores borne singly on pedi- 
cels, globose or obovate ; es hyaline, thick, verruculose ; germ-pores 
scattered, numerous, obscur ; 
. Teleutosori erumpent, definite, paraphysate, orange. Teleutospores 
aggregated into conspicuous ‘fibrillose filaments, consisting of spores and 
pedicels closely interwoven; 4-6-celled by {рымен septa; wall not 
distinctly laminate, hyaline, smooth, with one indistinct germ-pore in each 
cell ; apis several times the length of the spore, byline basidiospores 
obovate o reniform, smooth. 
Distribution : Africa ; Philippines ; Java; Australia 
The single New Zealand species is indigenous and widespread. The 
genus is confined to Rubus, a genus of the family Rosacea 
amaspora consists of two species—H. longissima (Theum.) Koern., 
found in South Africa on Rubus rigida, and H. acutissima Syd., oceurring 
on Rubus Rolfei in the Philippines, and on R. moluccanus L. in Java and 
Queenslan 
In the past confusion has arisen as to the systematic position of this 
species, and many systematists have placed it under Phragmidium, but 
