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203 
Closely resembling Ustilago in habit and in the small 
size of the spores, differing in the coarsely granular nature 
of the powder, due to the spores being aggregated in masses 
at first and bound by a subgelatinous substance, finally 
becoming free. The species were at one time included in 
Ustilago. 
Cintractia patagonica, Cke. and Mass. 
Sori produced in the ovary and glumes, black, not be¬ 
coming pulverulent ; spores dark brown, globose or sub- 
globose, smooth, averaging 5 p, at first in dense clusters 
or spore-balls. 
On Bromus unioloides and Festuca bromoides. 
This species was founded on material received at Kew, 
from Patagonia. Some time afterwards an English 
traveller in South America observed that Bromus unioloides 
was grown mixed with lucerne, for fodder. Seed of this 
grass was brought home, sown, and in due course produced 
not only fruit, but also its parasite, C. patagonica, which 
was received at Kew a second time for identification. 
SOROSPORIUM, Rud. 
Spore-balls formed of numerous, small, globose spores 
of equal size, which separate readity, produced from 
gelatinised hyphae, and at first covered by a gelatinous 
investment ; promycelium slender, promycelium spores 
unknown. 
Readily known by the dense spore-balls of equal size, 
and all capable of germination. The true position must 
remain uncertain until the mode of germination is known. 
Sorosporium saponariae, Rud. ; Plowr., Ured., p. 296. 
Spore-balls forming a pale reddish-brown, coarsely pow¬ 
dery mass in the inflorescence ; spores subglobose or 
broadly elliptical, pale ochraceous, pellucid, the free sur¬ 
faces with minute warts or ridges, 12—18 X 10—14 p ; 
promycelium slender. 
Syn. Thecaphora tunicae, Auersw. 
Schizoderma saponariae, Fries. 
In the ovary, filaments of stamens, etc., of Saponaria 
officinalis, Dianthus deltoides. Lychnis dioica, Stellaria 
holostea. 
Germany, Austria, France, Italy, and Algeria. 
Sorosporium scabies, Fischer (—Tuburcinia scabies. 
Berk.; Plowr., Ured., p. 294), has been shown to belong 
to the Myxogastres or Mycetozoa, and is now known as 
Spongospora scabies. Mass. 
