Commelina martiana Seubert (1855: 265

Hassemer, Gustavo, 2017, Taxonomic and nomenclatural notes on neotropical Commelina (Commelinaceae), and an identification key for Brazil, Guyana, Paraguay, Suriname and Uruguay, Phytotaxa 303 (2), pp. 101-117 : 102-103

3. Commelina martiana Seubert (1855: 265 , tab. 37[I])

Lectotype (designated here): — BRAZIL. Bahia: “ in silvis udis ad Caitete ”, C. F. P. von Martius s.n. (M-0243589! [ Fig. 2 ]; isolectotype M-0243590!).

= Commelina erecta Linnaeus (1753: 41)

Lectotype (designated by Clarke 1881: 181):—[illustration] tab. 77 in Dillen (1732).

Notes: —The protologue of C. martiana ( Seubert 1855: 265) provides the following information on the type: “ Crescit in silvis udis ad Caitete prov. Bahiensis: M. [Martius] Floret Octobri ”. There are two sheets kept at M (M-0243589 and M-0243590) that can be considered original material for this name; the specimens on these two sheets evidently belong to the same species. These two sheets have labels with different numbers (59 and 60, respectively), which at first would suggest that they are not part of the same gathering. However, these labels are not Martius’ collector numbers and they were added much later by Adolph Toepffer as part of an effort to organise the collections housed at M (Hans-Joachim Esser, pers. comm.). I here designate one of these sheets (M-0243589; Fig. 2 ), which has information on the label that matches exactly that provided in the protologue, as the lectotype of C. martiana .

Commelina martiana has been accepted as a synonym of C. erecta in Barreto (1997) and Fernández & Cayola

(2014), to which I agree.

Figures

FIGURE 2. Lectotype of Commelina martiana (C.F.P. von Martius s.n., M-0243589). Published with permission of Botanische Staatssammlung München.