I think it might be an umbrella plant ( Cyperus diffusa). If it is - and others may disagree - it needs decent light, but not direct sun and it also likes to be kept damp. Mist leaves often. This plant does enjoy being wet.

I thought the same before I scrolled down to see your answer, Ojibway. Definitely an umbrella plant. Had one myself for years.

I agree Ojibway

Sorry folks, I don't agree - it looks like Schefflera arboricola to me, although a closer shot would confirm or deny it. Used to be called Heptapleurum arboricola, is one of the easiest houseplants to keep. Let compost dry out slightly between waterings (dry on top, not shrunken), keep out of direct sunlight during summer months, prefers a non draughty spot, keep away from heat sources like radiators, feed from Spring to end of summer once a week or fortnightly with something like Baby Bio houseplant food. You'll probably need to repot after a couple of years - they get large eventually, but you can always cut off the tops and root them up separately and replant those.

The kind of umbrella plants I have come across, have spidery long leaves. The Schefflera arboricola recommended by bamboo has the leaf shape in the photo. I believe bamboo has got it! Is this also called the hawaiian umbrella plant - hence the confusion?! Would google it but computer updating, so ... very slow.

The name hawaiian tree or plant is sometimes used for this plant - but only when its grown as a bonsai