Kesidang in Malaysia and Kerak Nasi in Jawa where it is claimed to be native. Rumphius has described the plant in his Herbarium Amboinense back in 1750's in his fifth volume. He calls this plant Flos pergulanus (I am not sure what pergulanus) but put the Malay and Balinese names as Pele Tsjedangan and Plisse dangan. He mentioned no medicinal used only that it is the favourite amongs the ladies who where the flowers on their sanggul.
This plant of mine actually has been lying neglected from the time I purchased it. There were time when the leaves would all fall and the stem remained bare out of neglect. When I moved to my new home and repotted it into a bigger and more beautiful pot. It simply started to grow but did not even show any signs of wanting to flower where I initially placed it. When I decided to move it together with my other plants with fragrant flowers then I saw the vast change in its life. She like the sunny side of the garden and of course she enjoyed being pampered. Then she sprung with these beautiful and fragrant flowers that began to fill the air in my garden morning and evening. At the time the photo was taken my olfactory nerves began to sense its fragrance the sort of pandan smell which is refreshing to some but not everyone.
The fragrance is imparted by a substance called 2-acetyl-1-pyrroline or simply 2AP. This was worked out by our industrious neighbours up north. This same substance is found in Pandanus amaryliifolius and the famed beras wangi Siam.
The name Kerak Nasi is probably given on account of the smell which is similar to the smell of burnt rice (nasi hangus) especially the crust which remained at the bottom. Of course today people will not get to enjoy the fragrance of burnt rice since the advent of technology which has put the programmed rice cooker in our kitchens. I used to fight with my siblings everytime the boiled rice burnt a little. Especially when Mak cooks the special rice like nasi tomato, nasi lemak, nasi dhal etc. They are just wonderful to eat with curry of course.
My search for medicinal values for this plant has failed to bring about any mentioned of it over the net. Some of the books I refered to in my collection too did not mention any medicinal use. I have not finished searching though. If anyone has any idea of its medicinal use then probably you can help enlighten me. However, two of her sister have found use in helping heal people of their ailments.
Vallaris solanacea, (Roth) O. Kuntze has uses in treatment wounds, sores, fever, toothaches and gingivitis. In Burma the latex is applied on sore and wounds to promote wound healing. In Indo-china the bark is used to treat fever. The bark is bitter and has astrigent property.
Research done has revealed that it contains an very potent cardiotonic glucoside called O-acetyl-solanoside (O-acetyl acofreosyl-digitoxigenin) and its properties are comparable to Lanatoside C and Digoxin. A potential use in treatment of Heart Failure when proper studies is done.