3. Swertia hookeri C.B. Clarke (1883: 127) .

Lectotype (designated here):— INDIA. “ Sikkim Himalaya, alt. 12-13,000 ft. ” (CAL, barcode CAL0000018334! (Fig. 3). Isolectotypes: K, barcode K000854378, K000854381; L, QRcode L.2693413, digital image!; P, barcode P00524815 digital images!. Residual Syntypes: INDIA. Sikkim: “Lachen & Choongtam, J.D. H. ” (K, barcode K000854381, K000854379, digital image!); ibid., Sikkim Himalaya: “ King ” (K, barcode K000854383, K000854382, K000854384, digital images!) .

— Clarke (1883) based on J.D. Hooker and T. Thomson’s collections of Gentiana elements (an unnamed species as Gentiana sp. n. 41) from Sikkim Himalaya, India, described a new species Swertia hookeri C.B.Clarke and cited specimens as “ Sikkim Himalaya, alt. 12-13,000 ft.; Lachen & Choongtam, J.D.H., King ”. Ho & Liu (2015: 165), regarding the type of the name S. hookeri C.B.Clarke, cited “J. D. Hooker s.n. (CAL – holotype, not seen; GH!, K! – isotypes)” which do not stand on any ground according to the rules of ICN (vide Art. 7.11, 9.1, 9.3 & 9.10) even in this case as well.

Nine original specimens associated with this name were traced (1 in CAL [CAL0000018334], 6 in K [K000854378, K000854379, K000854381, K000854383, K000854382, K000854384, digital images!], 1 in L [QRcode L.2693413] and 1 in P [P00524815]) possessing authentic labels. However, we have been unable to locate any specimens from GH. Amongst the traced original specimens, CAL0000018334! bear original notes written on the sheet and agrees well with the protologue; hence selected here as the lectotype.