Marianne North was a Victorian lady who travelled around the world painting flowers and other vegetation. These are some Malayan orchids. She offered most of her paintings to the Royal Botanic Gardens at Kew (where she could doubtless have seen many of her flowers without having to leave London), and they can be seen on display there in a special gallery. I had never heard of her until I came across a book about her in the local library.
Like Blechen's palms, these are good to look at on a grey winter day.
A contribution from Madagascar.
Flowers that could be seen at Darjeeling, in the gaps between the tea-plantations (the best Darjeeling tea is the nectar of the gods).
Pitcher plants (they have a wonderful display of those at Kew, they are surprisingly colourful).
A Protea from South Africa.