ID and care needed
I care for about 40 plants at our local library. I don't have any special knowledge of houseplants, I'm just a volunteer. Anyway, there's one plant I can't ID. When I first took over the watering of their plants this particular one was laying half dead on a heater. I thought it had potential, so I re-potted it and have attempted to give it better care. What's bugging me is that the old leaves are a rich green solid colour, but the new growth is pale and streaky and the leaves don't improve with age. I give it a weak solution of 20-20-20 about once a month except during the winter.
I've included a close-up of the stem, the odd looking flower and the whole plant. Any suggestions?