Ixora acuminata Roxb.

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

Ixora acuminata Roxb.

( Fig. 1 )

Flora Indica 1: 393 ( Roxburgh 1820).

TYPE MATERIAL. — Bangladesh • Sylhet (‘Silhet’); s.d.; Roxburgh s.n.; lectotype (designated here): CAL [Roxburgh Icones Number 2428, Volume/Folder 16, digital image!]. https://archive.bsi.gov. in/botanical-details?link=525D9244C85316CY

LECTOTYPIFICATION REMARKS

Ixora acuminata was first mentioned by Roxburgh (1814) in Hortus Bengalensis as a nomen nudum. Later, it was validated in Flora Indica ( Roxburgh 1820) , along with additional notes by Wallich. In the protologue, it is indicated that the plant is native to Sylhet (‘Silhet’), but there is no collection by Roxburgh from Sylhet (‘Silhet’) available. In his numerical list, Wallich (1828) had written ‘6126. I. acuminata Roxb. ’ with two materials that is, ‘A. FD & HB and B. HBC [ Hortus Botanicus Calcuttensis ]’. Husain & Paul (1989) cited 6126A and 6126B at CAL as type. Since the numerical list was published later than the publication of the species, this cannot be considered for lectotypification. While searching extensively for Roxburgh’s specimens ( Sealy 1956), we found a botanical illustration of I. acuminata with Volume/Folder 16, Roxburgh Icones number 2428 at CAL. So, in the absence of herbarium specimens associated with this name, here we designated Roxburgh’s illustration with Icones number 2428 as the lectotype as per the Shenzhen code Article 9.12 ( Turland et al. 2018).

Figures

FIG. 1. — Lectotype of Ixora acuminata Roxb. (CAL [Roxburgh Icones Number 2428]).https://archive.bsi.gov.in/botanical-details?link=525D9244C85316CY © The Director, Botanical Survey of India, Kolkata (reproduced with permission).