Aphanamixis polystachya

Pithraj tree
Fruits
Conservation status
Least Concern  (IUCN 3.1)[1]
Scientific classification
Kingdom:	Plantae
Clade:	Tracheophytes
Clade:	Angiosperms
Clade:	Eudicots
Clade:	Rosids
Order:	Sapindales
Family:	Meliaceae
Genus:	Aphanamixis
Species:	A. polystachya
Binomial name
Aphanamixis polystachya (Wall.) R.N. Parker
Synonyms[2]
Aglaia aphanamixis Pellegr. [Illegitimate] Aglaia beddomei (Kosterm.) S.S.Jain & R.C.Gaur Aglaia cochinchinensis (Pierre) Pellegr. Aglaia janowskyi Harms Aglaia polystachya Wall. Amoora amboinensis Miq. Amoora beddomei Kosterm. Amoora grandifolia Walp. Aphanamixis agusanensis Elmer [Invalid] Aphanamixis amboinensis (Miq.) Harms Aphanamixis apoensis Elmer [Invalid] Aphanamixis blumei Span. [Invalid] Aphanamixis cochinchinensis Pierre Aphanamixis coriacea Merr. Aphanamixis cumingiana (C.DC.) Harms Aphanamixis davaoensis Elmer [Invalid] Aphanamixis elmeri (Merr.) Merr. Aphanamixis grandiflora Blume Aphanamixis grandifolia Blume Aphanamixis lauterbachii Harms Aphanamixis macrocalyx Harms Aphanamixis myrmecophila (Warb.) Harms Aphanamixis obliquifolia Elmer [Invalid] Aphanamixis perrottetiana A.Juss. Aphanamixis pinatubensis Elmer Aphanamixis polillensis (C.B.Rob.) Merr. Aphanamixis rohituka (Roxb.) Pierre Aphanamixis schlechteri Harms Aphanamixis sinensis F.C.How & T.C.Chen Aphanamixis timorensis A.Juss. Aphanamixis tripetala (Blanco) Merr. Aphanamixis velutina Elmer [Invalid] Canarium vrieseo-teysmannii H.J.Lam Chuniodendron spicatum Hu Chuniodendron yunnanense Hu Dysoxylum spiciflorum Zipp. ex Miq. [Invalid] Trichilia tripetala Blanco

Aphanamixis polystachya, the pithraj tree, is a species of tree in the family Meliaceae. It is native to India, Pakistan, Nepal, Bhutan, Bangladesh, Myanmar and Sri Lanka.^[3] It is a widely used as a medicinal plant in Ayurveda.^[4]

The Bengali name of the tree is royna (রয়না). Another name of this tree is pithraj (পিথরাজ). Oil is not edible and can be used as biodiesel and lighting. The very fine wood is used for construction and ship-making.^{[citation needed]} The tree is 20m tall. Leaves are compound, imparipinnate, alternate; oblong-lanceolate, apex acuminate; base asymmetric; with entire margin. Flowers are polygamous and show panicles inflorescence. Fruit is a single seeded pale-reddish subglobose capsule.^[5]

• Assamese—hakhori bakhori
• Bengali—tiktaraj, pitraj(রয়না)
• English—rohituka tree^[1]
• Hindi—harin-hara (हरिनहर्रा), harinkhana
• Kannada—mukhyamuttage, mullumuttaga, mulluhitthalu, roheethaka
• Khasi—dieng rata
• Kuki—sahala
• Malayalam—chemmaram, sem
• Manipuri—হৈৰাঙখোঈ heirangkhoi
• Marathi—raktharohida (रक्तरोहिडा')
• Rongmei—agan
• Sanskrit—anavallabha, ksharayogya, lakshmi, lakshmivana, lohita
• Sinhala—higul ^[6][7]
• Tamil—malampuluvan, sem, semmaram
• Telugu—chevamanu, rohitaka

The fruit shell contains triterpenes, aphanamixin. The bark contains tetranortriterpene, and aphanamixinin. The leaves contain diterpene, alcohol, aphanamixol and β-sitosterol. The seeds yield a limonoid, rohitukin, polystachin and others, an alkaloid, a glycoside and a saponin. A chromone and three flavonoid glycosides have been reported from the roots.^[8]

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