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PTEROCARPUS SANTALINUS. 
Red Sanders Tre&,* 
Class DiADELPHiA. — Order Decandria. 
Nat. Ord. Papilionace^. 
Gen. Char. Calyx five-toothed. Legume falcated, leafy, va- 
ricose, surrounded with a wing, not gaping. Seeds solitary. 
Spec. Char. Leaves ternate, roundish, smooth. Petals 
notched, waved. 
This species of Pterocarpus is a native of India and Ceylon, 
thriving luxuriantly in mountainous and rocky situations : in low 
vallies and in rich soils it is apt to degenerate. This tree was first 
described by Konig, who sent a description of it to the younger 
Linnaeus. 
It is a lofty tree, with alternate spreading branches ; the bark is 
rough, and somewhat resembles that of the common alder; the 
leaves are petiolate and ternate, each simple leaf or pinnae being 
ovate, blunt, retuse, or somewhat notched at the apex, entire, 
veined, above smooth, beneath hoary; the flowers are in axillary 
spikes, without bracteas; the calyx is rough, and divided at the 
brim into five segments; the corolla is papilionaceous, of a bright 
yellow colour, consisting of an obcordate, erect, reflexed at the 
edges, dentated, and waved vexillum, with red veins; two spreading 
alae, denticulate, and waved, and an oblong and somewhat inflated 
short keel; the filaments are ten, and support white globular 
anthers; the germen is oblong, compressed, and hairy; the style is 
curved, and crowned with an obtuse stigma ; the fruit is a roundish. 
* Fig. «. represents the anthers, b. The calyx. 
