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17-02-2013 18:17

Nina Filippova

Godronia cassandrae probably, it was collected fro

02-03-2013 14:44

Camporesi Erio

Hi to all,     can you help me with these two f

02-03-2013 21:21

Alain GARDIENNET Alain GARDIENNET

Bonsoir à tous, Hi all,Les taxons Ostropa cinerea

05-02-2013 12:28

Alain GARDIENNET Alain GARDIENNET

Bonjour,On m'a légué ce pyréno venant sur bois

01-03-2013 20:08

Enrique Rubio Enrique Rubio

Dear friendsCan you help me with this article? STU

01-03-2013 19:42

Gilles Corriol Gilles Corriol

Bonjour à tous,Voici un discomycète récolté l'

27-02-2013 20:55

Miguel Ãngel Ribes Miguel Ángel Ribes

Good eveningI have this species from Parador de Ma

16-02-2013 12:52

Nina Filippova

Good day,there is another specimen which goes unde

27-02-2013 15:01

Bartusek Martin Bartusek Martin

Hello, I have a question about the relationship be

28-02-2013 09:07

Nina Filippova

Good day.This species quite often met at dead twig

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Godronia cassandrae
Nina Filippova, 17-02-2013 18:17
Godronia cassandrae probably, it was collected from Chamaedaphne calyculata twigs. I've read only the key in Nordic Macromycetes now.  Another two species on ericaceae: G. andromedae, G. callunigera. G. andromedae described with spores 5-septate (mine 7-), and on host Andromeda, so it was excluded.  G. cassandrae described there with spores some longer then mine, and it reported with stroma (absent in this specimen). There are also variations in this species, which i did not studied. G. callunigera fits well too. The difference between these two species (G. callunigera - G. cassandrae) not clear to me (reported spore size, and in my specimen it is just intermediate).

Apos deep-cupulate (with small pore when young), sessile or with short stipe, up to 0,7 mm in diam,  single, without stroma, bursting through the bark of twigs; outer surface coriaceous, dark brown, radially splitted when overmature, hymenium grayish.

Excipulum from textura prismatica, at the base amorphous, almost black, easily crashed when tapped, in mid-length from brown prismatic cells 10-15 x 7-9mk, in collar (part exceeding hymenium) from two layers: external layer from brown textura prismatica, internal layer from textura oblita-gelatinosa, inner hyphae covered by warts to 2 mk high; medulla from textura porrecta, hyphae parralel to flanks, not conspicuous; asci cylindrical, enlarged in mid-length, with short stalk and clamp, with amyloid pore (KOH, lugol), 80-107 x 8,3-12,2; paraphyses filiform (1 mk),not ecxeeding the asci, septate, rarely branched, upper part slightly enlarged (2 mk), with some gelatinose encrustation; spores needle-shaped, with obtuse and acute ends, up to 7-septate, often start to germinate from upper end, 56 (46-66) x 2,6 (2-3).
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Nina Filippova, 18-02-2013 07:32
Re : Godronia cassandrae
I found also one previous collection of this species, but only in pictures. There apothecia site in close clusters, (probably on stroma?), and since they look more fresh, light brown color present at outer surface of receptacle, and hymenium gray.
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Stip Helleman, 18-02-2013 08:11
Stip Helleman
Re : Godronia cassandrae
Or a different species?
I will send you Groves discussion on G. cassandrae and G callunigera so you can make your own decision, both species are unknown to me.

Stip
Nina Filippova, 18-02-2013 17:37
Re : Godronia cassandrae
Thanks for the paper, Stip! I am studying it.
Nina Filippova, 02-03-2013 14:18
Re : Godronia cassandrae
Hi Stip,

i think that it is G. cassandrae f. cassandrae. I've microscopied one more specimen, did more measurements of asci and spores.


There they are: asci 75-120 x 6,8-9,9 (N=20); spores 59 (48-71) x 2,5 (2-3,2) (N=30).


It is only about the first specimen, and i have no collection of the second (only photo of apothecia and some microphoto, where spores not showed well). So, i can't measure the second specimen and think it is impossible to say anything about species. Groves (1965) reportes that both species (G. callunigera f. cassandrae and G. cassandrae f. cassandrae) could be found on this substrate. Callunigera must have smaller spores, and mine just in range of G. cassandrae.

Stip Helleman, 03-03-2013 00:30
Stip Helleman
Re : Godronia cassandrae
Hi Nina,
thank you very much for sharing your conclusion.

Stip