Chassalia curviflora var. ophioxyloides (Wall.) Deb & B.Krishna (Images by Giby Kuriakose, Dinesh Valke (Id by Giby Kuriakose & E S Santhosh Kumar), Anurag N Sharma & P. Santhan (Inserted by J.M.Garg) (For more photos & complete details, click on the links))

As per efi thread : Sarpagandha and Chasalia comes under the same family Rubiaceae. The inflorescence looks alike when in flower (except the size; flowers are smaller and straight in Sarpagandha). Sarpagandha plants are always smaller than Chasalia. Fruiting inflorescence of Sarpagandha is red whereas in Chasalia it is white. 
Binomial Habit Notes References Distribution
Chassalia curviflora (Wall. ex Kurz) Thw. var. ophioxyloides (Wall.) Deb & Krishna Shrub Western Ghats, Evergreen Forests Flora of Tamil Nadu, VOL. II, 1987 Coimbatore, Dindigul,  Kanniyakumari, Nilgiri, Theni, Tirunelveli


Botanical name Synonyms Family Common name
Chassalia curviflora var. longifolia Chassalia longifoliaRubiaceae Long-Leaved Chassalia
Chassalia curviflora var. ophioxyloides Chassalia ophioxyloides, Chassalia ambigua, Psychotria ophioxyloidesRubiaceae Curved Flower Snake Chassalia

Flora of Eastern Ghats: Hill Ranges of South East India, Volume 3 By T. Pullaiah, K. Sri Ramamurthy (2007)- Details-
Chassalia lushaiensis (C.E.C.Fisch.) Fisch. Eastern Himalaya and Mizoram
Chasalia (Rubiaceae) : 1 post by 1 author.

I have updated eFI (efloraofindia) page on Chasalia (Rubiaceae)

Attempts have been made to incorporate most of the species available in India & nearby areas with details & keys directly or through links as far as possible. It’s quite possible that there may be some discrepancy in the accepted names & synonyms taken from other links.

Species discussed so far in efloraofindia are given at the bottom of the page in the form of links against Subpages. On clicking them one can see all the details.

If someone can provide complete list of Indian species with source references it will be wonderful.

Any comments/ corrections are welcome.

Pl. go through Chassalia (‎‎‎‎‎‎Rubiaceae) page with images of species (done by me) in efloraofindia.

If you find any mis-identification, pl. let us know. If anybody can send images of other species of this genera (for incorporation in the website), if any, it will be really nice.

Also, if anybody is interested to take up the activity of inserting images on efloraofindia pages from efloraofindia posts, pl. let us know.