Gentiana micans C.B. Clarke (1883: 112)

Lahiri, Subhajit, Dash, Sudhansu Sekhar & Maity, Rohan, 2022, Revisiting the typification of three names in the family Gentianaceae, Phytotaxa 572 (3), pp. 289-294 : 290

1. Gentiana micans C.B. Clarke (1883: 112) .

Lectotype (designated here):— INDIA. “ Sikkim ad 15,000 ped. alt.” ( CAL, barcode CAL0000018215 !, ( Fig. 1 ). Isolectotypes : K, barcode K000872040 , digital image!, GH, barcode GH00073946 , digital image!; L, QRcode L.2696217, digital image!; P, barcode P00350434 , digital image!). Residual Syntypes: BHUTAN. “ Phullong , alt. 15000 ft., J.D. H ” ( K, individual specimen on blue folder (without any unique identifier number) on the sheet with barcode K000872040 , digital image!) .

— Clarke (1875), based on the collections of Gentiana elements from India, in J.D. Hooker and T.Thomson’s herbarium; treated “G. sp. no. 19, Hook.f. et Th. ” as an unnamed variety “ss” under G. argentea (Royle ex D.Don) Royle ex D.Don which have slightly longer corolla than the latter and cited the locality as “ Sikkim ad 15,000 ped. alt.”. Subsequently, he validated that variety “ss” of G. argentea or “G. sp. no 19, Hook.f. et Th. ” as a new species, G. micans C.B. Clarke , in The Flora of British India ( Clarke 1883) directly referring to his 1875 publication. Therefore, the specimens (“ Sikkim ad 15,000 ped. alt.”) cited in his 1875 publication are to be treated as original materials (vide Art. 9.4 Shenzhen Code), associated with this name along with the newly cited gathering from “Phullong” [in Bhutan] collected by J.D. Hooker. Ho & Liu’s designation (2001: 319), “K! – holotype; GH! P! –isotypes” for the name Gentiana micans C.B.Clarke , do not stand on any ground according to the rules of ICN ( Turland et al. 2018) vide Art. 7.11, 9.1, 9.3 & 9.10.

Amongst the traced original materials associated with this name all of which were collected by J.D. Hooker; one each, housed at CAL (CAL0000018215!), GH (GH00073946 digital image!), L (L.2696217 digital image!) and P (P00350434 digital image!). The herbarium sheet housed in K (K000872040 digital image!) is admixture of two different species from three gatherings— Gentiana leucomelaena Maxim. from “Thibet” [Tibet] (K barcode 000872039, digital image!) separated from rest of the specimens of G. micans C.B.Clarke from Sikkim and Phullong [in Bhutan], on the sheet by Clarke himself. It was very difficult to separate individuals of “Phullong” [in Bhutan] from Sikkim, (K barcode 000872040, digital image!); though it is assumed that the individual specimen on the blue voucher folder without any unique identifier number to be from Phullong [in Bhutan]. Therefore, to avoid this confusion, the specimen housed in CAL (CAL0000018215!) with original remarks of C.B. Clarke collected from 15,000 ft of Sikkim by J.D. Hooker, is selected here as the lectotype of Gentiana micans C.B.Clarke.

Figures

FIGURE1. Lectotype of Gentiana micans C.B. Clarke (CAL0000018215) © Director, Botanical Survey of India, HQ, Kolkata.