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31-08-2025 17:32

Michel Hairaud Michel Hairaud

Bonjour, Pas d'identité trouvée pour cette réc

31-08-2025 19:41

Enrique Rubio Enrique Rubio

Hi to someone.I need to download this issue of Sve

31-08-2025 14:34

Thomas Flammer

I have found a Rutstroemia on abt. 2000 m on Alnus

29-08-2025 19:04

Thomas Flammer

Spores 21.2 - 26.2 x 8.3 - 11.3 µm - Q: 2.20 - 2.

30-08-2025 18:29

Joaquin Martin

Hi,I found this undetermined ascomycete on broadle

28-08-2025 17:24

Thomas Flammer

I know, that this is not the real topic of this fo

29-08-2025 05:16

Francois Guay Francois Guay

I think I may have found the teleomorph of Dendros

24-08-2025 21:59

Edmond POINTE Edmond POINTE

Bonsoir amis mycologues,Trouvé sur crottin de che

27-08-2025 12:02

Pavol Palo

Hello dear friendsI would like to ask for sharing

25-08-2025 17:37

François Freléchoux François Freléchoux

Bonjour,Nous avons trouvé samedi dernier à l'ét

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Salvia leaf parasite
Josep Torres, 28-06-2025 16:00
Josep TorresHello.
A tiny fungus shaped like globose black grains, only 0.05 to 0.15 mm in diameter, sprouting on the leaves of Salvia jordanii, colloquially known as rosemary, causing a marked yellowing.
Hyphae of the peridoid wall have an angular texture.
Conidia are cylindrical, with rounded ends, mostly with three septa, constricted within them, with brown intracellular pigment and abundant lipid droplets inside, measuring in water:
(14.7) 15.1 - 19 (20) × (6.9) 7.4 - 9.5 (9.7) µm
Q = (1.6) 1.8 - 2.4 (2.5) ; N = 30
Me = 17.4 × 8.3 µm; Qe = 2.1
I admit I'm not sure where the wind is blowing this time. The closest thing I know about rosemary leaves would be Alternaria alternata, but the microscopy doesn't match up at all.
Any feedback from you would be welcome.
Thank you very much in advance.
Best regards.
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Josep Torres, 03-07-2025 22:43
Josep Torres
Re : Salvia leaf parasite
Any suggestions.................................................................
Hardware Tony, 03-07-2025 23:14
Hardware Tony
Re : Salvia leaf parasite
Hi Josep,  take a look at Trimmatostroma salicis, found on many plants inc. Salix mostly. Also on Rosemary. Macro and conidia similar.   regards
Mathias Hass, 04-07-2025 08:03
Mathias Hass
Re : Salvia leaf parasite
I would look in the direction of Camarosporium. Trimmatostroma salicis looks different in my experience.

Kind regards Mathias
Josep Torres, 04-07-2025 14:47
Josep Torres
Re : Salvia leaf parasite
Thank you both very much. Considering the information I've been able to find, the Camarosporium option seems to be a good one.
Best regards.