Renanthera citrina is a small renanthera and unusual in that it has citrus-yellow flowers with grape-colored spots rather than the typical red flowers. The flowers are starrier than some renantheras, lending the plant a more delicate look. I have found that the leaves tend toward a lighter green, as well, unless they are grown in low light. Blooms late winter to spring; flowers are long-lasting but not fragrant. Hard to find species.
Super easy! Give moderate light (avoid high light to keep leaves looking their best), intermediate to hot temperatures, and water like a vanda (water well and then let them dry out). Plants are typically grown in baskets, but will do well in pots with coarse medium, too, especially in drier conditions. Growers in drier climates will benefit from coarse bark in the basket to help maintain humidity around the roots.