What kind of floor is this?
Looking at different images may help you determine the species. Keep in mind I'm not a wood expert, and wood being a natural material will vary widely.
Oak
Oak tends to have a bold tight grain

Ash
Ash tends to have a bold semi-tight grain.

Hickory
Hickory tends to have a more subtle longer grain.

Maple
Maple tends to have a subtle semi-tight grain.

Bamboo
Bamboo tends to have a long straight tight grain.


The next question is to determine if it's solid, engineered, or locking. The best way to figure this out, is to look at the ends of a plank.
Solid
If it's solid, it will look like a solid block of wood.

Engineered
If it's engineered, it will look like the edge of a plywood sheet (a bunch of thin layers of wood).

Locking
Locking will tend to be thinner, look more like Medium-density fibreboard (MDF) or plywood from the side, and will have a funny looking tongue that locks with the adjacent plank.