Ixora calycina Thwaites

Harishma, K. H. & Nampy, Santhosh, 2025, Lectotypifications in Ixora L. (Rubiaceae), Adansonia (3) 47 (12), pp. 251-257 : 252-253

Ixora calycina Thwaites

( Fig. 4 )

Enumeratio Plantarum Zeylaniae: 155 ( Thwaites 1859).

TYPE MATERIAL. — Sri Lanka • ‘Zeylon’, Central Province; up to 7000 ft; s.d.; Thwaites CP 448; lectotype (designated here): CAL [ CAL0000069728 !]; isolectotype: CAL [ CAL0000069729 !].

LECTOTYPIFICATION REMARKS

Thwaites (1859) described Ixora calycina and cited CP 448 along with ‘Hab. Central Province, up to an elevation of 7000 feet’. Husain & Paul (1989), mentioned the specimen at CAL as the type. But there are two sheets available with the same collection number, CP 448 ( CAL 0000069728, CAL 0000069729). Hence lectotypification is needed as Husain & Paul (1989) did not specify which of the two duplicates available in CAL is the lectotype. There are 12 more sheets with the same collection number in different herbaria: two at K in a single sheet ( K 000031359, K 000031360), five at P ( P 03987727, P 00836689, P 00836690, P 00836691, P 00836692), one each at BR ( BR 0000005317400), FR ( FR 0031479), GH ( GH 00096724), LE ( LE 00017471), MH ( MH 00002969), NYBG ( NY 00131979) and TCD ( TCD 0018033). The sheet CAL 0000069728, which has the same location details as in the protologue is chosen here as the lectotype, and the rest as isolectotypes.

Figures

FIG. 4. — Lectotype of Ixora calycina Thwaites (CAL [CAL0000069728]). © The Director, Botanical Survey of India, Kolkata (reproduced with permission).