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Friesia IV, 1-2

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-74 -<br />

8. Phoma (Phyllosticta) bellidis Neerg. In a previous<br />

publication (N e e r g a a r d 1941) this fungus has been given a<br />

Danish diagnosis, whereas it was named in a later publication<br />

(N e e r g a a r d 1945a ) . F in ally, as a t hird step in a somewhat pro­<br />

tracted procedure I now want to m eet the demand of t he Int ernatio­<br />

nal Rules of Bot anical Nomenelature for a Latin diagnosis.<br />

L a t i n d i a g n o s i s. Pho ma (Phyllosticta) bellidis Ne erg.<br />

1945 (diagnosis danica 1941). P ycnidiis dense aggregatis, subglobosis<br />

v. globoso-lenticularibus (160-220 p diarn .) , ostiolo brevissi<br />

mo, poro 10-15 p diam. Conidioph oris vix ullis. Conidiis hyalinis,<br />

cylindraceis, ovoideis vel ellipsoideis, non guttulatis, 4.5-6 p L,<br />

1.5-3 p er. H a b. ad semina et pla ntulas Bellidis perennis in Da­<br />

nia, Anglia, Hollandia, Helvetia et Italia.<br />

Typus in Kgl. Veterinær - & Landbohøjskole, Plantepatologisk<br />

Laboratorium , H afn ia, Dania, dep os.<br />

D i s t r i b u t i o n. Pho ma bellidis occurs freque ntly on seed of<br />

Bellis perennis fl. pl. harvested in Denmark, Ho lland a nd Italy and<br />

ge rmi nat ed in the Jacobsen gerrninator. It occurs either on ungerminated<br />

seeds or on seedlings attacked by damping-off. There is no<br />

doubt that this damping-off, always connected with Pho ma belluiis,<br />

as well as, in many cases, the death of the infected seeds, is caused<br />

by this fungus, although infection experiments have not been per­<br />

formed. As is evident from table 1, the fungus is widely distributed.<br />

In the 10-year period here concerned 40 % of the examined seed<br />

lots were infected.<br />

9. Zygosporium parasiticum (Grove) Dunting & Mason.<br />

In November 1941 a highly curious hyphomycete was sent me for<br />

identification from Mr. A l b e r t H a n s e n, director of Alfred<br />

Jørgensen's Laboratory of Fermentology, Copenhagen. The fungus<br />

was isolated from a wooden vat containing apple pulp, from a cider<br />

factory at Aarhus. It was found also in the apple pulp - probably<br />

it had been growing from the wood into the pulp.<br />

The fungus was identified as Zygosporium parasiticum (Grove)<br />

Bunting & Mason. So far no species of Zygosporium has been re­<br />

corded from Denmark, and Z. parasiticum has been recorded alto­<br />

gether but a few times, under varlous synonyms. As pointed out<br />

by M a s o n (1941) these synonyms are: Pimina parasitica Grove

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