16 
JOURNAL OF MYCOLOGY. 
[Von. TV, Nos. 2, 3, 
Habitat in foliis Sagittaria sagittifolioe , variabilis et monteviclensis in 
Italia, Gallia, Germania, Britannia, Belgio nec non Missouri America 
borealis et Republica Argentina, American, Australis. 
I have been able to ascertain the absolute identity of Physoderma 
Sagittarice, Fuck., TJredo Sagittarice , West., and Entyloma Bizzozerianum , 
Sacc., by the examination of authentic specimens. I have received a 
specimen of the first species taken from the classic Fuckelian collection 
Fungi Rhenani by the M. Prof. I. Briosi, of Pavia (to whom I am very 
much obliged); the typical specimens of the second and third species are 
contained in Prof. Saccardo’s herbarium. 
By a microscopic examination, I am convinced that the word “mag- 
nis,” applied by Fuckel to the spores of Physoderma Sagittarioe must be 
referred to the sori, because the diameter of the spores is 10—12 y, which 
agrees with the characters of Westendorp and Saccardo’s species. The 
synonymy of Poassansia Sagittarice, is therefore well defined. 
3. Doassansia Marttanioffiana (Thum.) Schroet. Pilzfl. Schles., 
p. 287 (1887); Protomyces Martianoffianus , Thumen.; Pilzfl. Sibiriens, II, 
p. 123 (1878); Berlese et De Toni Syll. Phycomyc. in Sacc. Syll. Fung. 
Omnium, Vol. VII, p. 320, n. 1125. 
“Soris hypophyllis, subpustuliformibus, ocliraceo-fuscidulis, utplun- 
mum, 60—80 y in diameter metientibus, numerosis, dense gregarius, in 
maculis usque ad 5mm.latis, orbieularibus, indeterminatis,haud margin- 
atis, flavescentibus dispositis maculasque contrapositas (epiphyllas) 
aurantiaco-flavidulas v. fuscidulas haud limitatas efficientibus; sporis 
irregulariter globosis, vel elliptico-globosis, plerumque 9—11, rarius 16 y 
in diameter, episporio tenui, levi, dilute brunneolo, plasmate subtiliter 
granuloso, pallido foetis; tegumento communi arete adnato, pallide 
colorato.” 
Habitat in foliis vivis fructibusque Potamogetonis natantis et graminei 
in Germania et pr. Minussinsk Sibirise occidentalis. 
The following species [D. occulta , Cornu), which grows also on Pota- 
mogeton , is but little different. 
4. Doassansia occulta (Hoffm.) Cornu, in Farlow’s Notes on a 
Fungus parasitic on species of Potamogeton , p. 2; Sclerotium occultum , 
Hoffman; Icon. Analyt. Fungor, p. 69, t. XVI, f. 3 (1862); Doassansia (?) 
Farlowii , Cornu, Sur quelques Ustilaginees nouvelles ou pen connues, p. 
287 (1883). 
u Soris ovatis vel globosis, ovariicolis, brunneis, compressis, nume¬ 
rosis, sparsis, 180—200 y longis, 140—180 y latis; sporis (immaturis [?]) 
globosis, 20 y circ. diameter, pallide coloratis, tegumento communi valde 
evoluto, obscure colorato.” 
Habitat in ovariis fructibusque maturis, Potamogetonis natantis et 
lucentis in Germania (Irmisch et Hoffmann) nec non Potamogetonis Vaseyi, 
pusilli , perfoliati , var. lanceolati et natantis , Ottawa Americse borealis 
(J. Fletcher). The fruits are white-greenish, red-brown spotted, swelled 
by the fungus. 
