4.1. Boerhavia alata Watson (1889: 69) .

Lectotype (designated here):― MEXICO, Sonora, on a small rocky island in Guayamas harbor, 1887, Palmer 332 (K000572647 [image!] available at http://specimens.kew.org/herbarium/ K000572647; isolectotypes: US00102938 [image!] available at http://n 2t.net/ark:/ 65665/3c9f5b93b-29bd-454a-882f-fed5af47a021; US 00102939 [image!] image available at http://n 2t.net/ark:/65665/3299ae852- 4b15-48c8-8390-36c1e22eb8da; NDG 15686 [image!] available at https://plants.jstor.org/stable/10.5555/al.ap.specimen.ndg15686).

Typification of the name Boerhavia alata: ― Watson (1889: 69) mentioned a locality (“On a small rocky island in Guayamas harbor”) and a collector and number of colleciton (Palmer 332); this citation represents a sintype (Art. 9.6 of ICN). We traced four copies of this specimen, two at US, one at K, and one at NDG. The K specimen (barcode K000572647) is here designated as lectotype since it is in better conditions and has flowers and mature anthocarps .

Distribution in Mexico: ―Endemic to the country (Villaseñor 2016), in Sonora it has been registered only in Sonoran biogeographic province (Fig. 4B), Guaymas municipality, close to the shore and in some islands (Isla Pájaros, Isla Almagre Grande, and Isla Tío Ramón), growing on roadsides and on rocky slopes near the shoreline, at 0–20 m a.s.l.