Here a few in Finnish:

• Kanerva (heather)
• Kielo (lily)
• Vuokko (anemone)
• Ruusu (rose)
• Kukka (flower)
• Lemmikki (forget-me-not)
• Orvokki (violet)
• Vanamo (Linnaea borealis)

In Swedish there is Linnéa. After the Linnaea flower (Linnea in Swedish). https://en.wikipedia.org/wiki/Linnaea

There is also Rosa, Viola and Iris but Linnéa is probably more common.

I know it’s not technically a flower, but I feel like Blossom counts

English also has Marigold and Iris.

Japan: 花 (Hana, Flower), 菫 (Sumire, violet), 蓮 (Ren, lotus), 蘭 (Ran, Orchid), 柊 (Hiiragi).

I’m here to say Jasmine /Jazmín in English and Spanish, because I haven’t seen it mentioned yet

I’m sure someone else will cover the big ones for the US but I just want to chime in that my son’s classmate is named Cattleya. (It’s a type of orchid.)

Leïla in persian is the Lilac flower

Dutch: Madelief, Roos, Margriet

Portuguese: Rosa, Margarida (Daisy), Floribela (“beautiful flower”), Dália (Dhalia), Íris, Violeta, Jasmim, Magnólia, Flor (literally “flower”), Gardénia, Hortência (Hydrangea), Florência, Liliana (from Lily), Jacinta (Hyacinth). I know personally women with all but four of these names.

This in Portuguese, where I currently live, but I have no reason to believe you won’t find them in Brazil or other Portuguese speaking countries as well…

Very common in Brazil: Rosa, Margarida, Jasmim/Yasmin, Lívia, Íris.

ps: Margarida is Daisy and Lívia is Lily.

Also in English, there’s Rosa, Marigold, and Iris (though Marigold might be a color rather than a flower?)

In Spanish and Portuguese there is literally “Florinda”

I don’t get the question at all. Azucena, maybe?

What I can think of in German: Rose, Erika, Jasmin, Iris (maybe Viola but that’s not really the commonly used name for the flower)