What are these black lines on my mini cattleya

[Bethy]

Hello, I've recently noticed these black lines on my mini cattleya. I don't know how long they've been there, but my other orchids haven't shown similar symptoms.

[estación seca]

Lesions like that are common. If they're firm and don't spread they're nothing to worry about. I think it represents old damage from many potential causes like underwatering, excessive light, heat, scrapes and scratches.

Soft spreading lesions are likely to be fungal or bacterial infection.

[Bethy]

Thank you! They are firm, and there is no smell.