ON TWO SUPPOSED SPECIES OF OVULARIA 43 
may, however, sometimes be found. On Pisum sativum examples 
may be collected in the field in which all the conidiophores bear 
“ only a single conidium at the apex—the conidium is apparently 
mature, and becomes detached (fig. 4); when surrounded by damp 
air, Movete. the fungus ors chains of conidia, 2-4, or perhaps 
more, in number. On leaves of the cultivated white turnip the 
conidiophores often bear only a single conidium (figs. 5, 6), but 
sometimes two, three, or even four may be found in a chain. 
conidia singly from the conidiophore. In Microsphera Berberidis 
DC.) Lévy. the conidiophores bear often only a single conidium 
Me. ih although chains of conidia up to four in number may be 
—— to ‘* C, fallax,” it may be noted here that the conidia 
in the authentic specimen (Rabenh. Fung. Eur. No. 800) in the 
Her saya measure e 28-40 x 14- 16 p p, and vary in shape from 
maziéres—which bears always very long chains of conidiat—but 
has given an excellent and aoa ra mica of the conidial 
stage of “ ties on ss. ait 
us sent o = Grvtaria Fallaw (Bon.) Sace. in rth 
Mypssthien- Marchi, No. 8 0 (on Vicia villosa, tah Be. 
Ww), No. 3393 (on Vita cassubica, Berlin, By ‘do w), 
and also in sahegiit une ycetes Rar. Select. tio 0. "4 i ‘ein Vicia 
villosa, leg. Tycho Vestergren), is a ne species of Ovularia ke 
rr or globose- lipid conidia, 9 p si hossepal and h 
othing whatever to do h Bonorden’s fung 
With regard to ‘ dessert Clematidis,”’ the iieeiodtio characters. 
given agree in every respect with those found i in the conidial stage 
of E. Polygoni. The habitat of the fungus—the petals of Clematis 
adiniiid— ahiot gh somewhat unusual, is not without parallel. 
I have found an Oidium growing freely on the petals of a Cineraria, 
in a house ; and Mr. Massee informs me that he has observed 
in the open the Oidium of witless Cichoracearum occurring on 
flowers of the vegetable marrow. 
Ovularia fallax, O. Clematidis; and Oidiwm leucoconium Preuss 
the Pol placed as synonyms under Fry- 
$t 
* See Bull. reg xxix. 186, 187 (1902). 
A. HEN). 
E- 
