Unknown species on cones - Forum ASCOFrance

16-03-2014 22:00

Unknown species on cones

Ralph Vandiest

Hello,I found this species a few months ago but ha

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Unknown species on cones

Ralph Vandiest, 16-03-2014 22:00

Hello,

I found this species a few months ago but had another look at some cones that I kept in a humid box. Frb up to 0,25mm and bright yellow. On cones of pinus sylvestris. Spores 2,5/3x1µm. The link herenunder is a previous post (3 jan 14) about the same imperfect fungi.

http://www.ascofrance.fr/forum/26540/imperfect-fungus-on-cones

Anybody an idea?

Regards,

Ralph

Björn Wergen, 16-03-2014 22:27

Re : Unknown species on cones

Hi Ralph,

compare with Dendrodochium citrinum.

regards,
björn

Ralph Vandiest, 16-03-2014 23:04

Re : Unknown species on cones

Hello Björn,

Could be.... the only info I have about this species is in Ellis&Ellis. There I see more round spores. Do you have a key of this genus?

regards,

Ralph

Christian Lechat, 17-03-2014 06:09

Re : Unknown species on cones

Hi to all,
Ralph's collection possess pleurogenous conidia (as Tubercularia), thus it is not the genus Dendrodochium which has acrogenous conidia.

Regards,
Christian

Thomas Læssøe, 17-03-2014 09:55

Re : Unknown species on cones

how about Lemalis aurea?

Ralph Vandiest, 17-03-2014 14:16

Re : Unknown species on cones

Hello all,

Thanks for your answers. In a mail I got from Thomas, he refers to W.B. Grove in British Stem- and leaf-fungi. Coelomycetes vol. 2 (1937). Here you find the following:

Lemalis aurea Sacc. (= Catinula aurea Lev.), Dendrodochium citrinum Grove).

Excipulum lemon-yellow, urn-shaped with a spreading rim, very fragile, shining outside,
about 1 mm high and broad; margin coarsely dentate with groups of hairs. Spores
very numerous, globose, hyaline, yellow, 1,5-2 µm diam., concatenate, involved
in mucus; sporophores long, cylindrical, branched, about 0.75 µm wide, each
producing a whorl of four branches at the apex. On cones of Pinus silvestris.
& on the wood of the same. (when dry resembles Calloria chrysocoma).

regards,

Ralph

Thomas Læssøe, 17-03-2014 14:21

Re : Unknown species on cones

there seems to be a problem with the shape (and size) of the conidia......

Ralph Vandiest, 17-03-2014 14:22

Re : Unknown species on cones

I noticed that to in first reaction on Björns mail; In E&E spores are more or less globose...

Åge Oterhals, 08-12-2025 14:13

Re : Unknown species on cones

Hi Ralph
Looks like I have found the same species as you on Pinus cones yesterday.
Sp. oblong 2.9-3.7 x 1.3-1.7 µm; with 2 bodies positioned at opposite ends of the conidia.
Did you come to any conclusion on species back in 2014?

Regards
Åeg

2025-12-07-B-R3-S6-5x-SShB-0001.jpg

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