Etienne-Pierre Ventenat (1757 - 1808) and the gardens of Cels and Empress Joséphine Author Callmander, Martin W. Conservatoire et Jardin botaniques de la Ville de Genève, C. P. 60, 1292 Chambésy, Switzerland. Author Durbin, Olivier D. Conservatoire et Jardin botaniques de la Ville de Genève, C. P. 60, 1292 Chambésy, Switzerland. Author Lack, Hans-Walter Conservatoire et Jardin botaniques de la Ville de Genève, C. P. 60, 1292 Chambésy, Switzerland. Author Bungener, Patrick Conservatoire et Jardin botaniques de la Ville de Genève, C. P. 60, 1292 Chambésy, Switzerland. Author Martin, Pascal Conservatoire et Jardin botaniques de la Ville de Genève, C. P. 60, 1292 Chambésy, Switzerland. Author Gautier, Laurent Conservatoire et Jardin botaniques de la Ville de Genève, C. P. 60, 1292 Chambésy, Switzerland. text Candollea 2017 2017-03-30 72 1 87 132 journal article 20462 10.15553/c2017v721a8 acfdbf0a-a444-4a6d-a27f-2fbb27a6893b 2235-3658 5721919 20. Colletia ephedra Vent., Descr. Pl. Nouv. : sub tab. 92. 1803 . Ξ Retanilla ephedra (Vent.) Brongn. Lectotypus (first step designated by Tortosa, 1992: 235 ; second step designated here): CHILE : sine loc., Dombey s.n. ( P [ P01818929 ]!; isolecto- : G [ G00341460 , G00341672 ]!, G-DC [ G00476003 ]!, P [ P01818930 , P01818931 ]!, P-JU n° 16153 [ P00678779 ]!). = Colletia obcordata Vent., Descr. Pl. Nouv. : tab. 92. 1803. Lectotypus (designated here): [ CHILE ]: Hort. Cels , Ventenat s.n. ( G [ G00341459 ]!; isolecto- : G [ G00341458 ]!, G-DC [ G00476011 ]!, P-JU n° 16157 [ P00667163 ]!) Notes . – Ventenat in Descriptions (1803: sub tab. 92) validated the name Colletia ephedra based on a Joseph Dombey (1742-1794) specimen from Peru . Dombey was a French explorer who collected in Chile , Peru and Brazil ( Stafleu & Cowan, 1986 ). Tortosa (1992: 235) designated an holotype specimen at P. His implicit lectotypification needs a second step designation as three sheets exist at P. We designate here the most complete sheet at P as the lectotype . Several duplicates have been found. Tortosa (1992: 235) corrected the origin of the material collected by Dombey as from Chile and not Peru . Colletia ephedra has been illustrated in Choix tab. 16 in late 1803 or early 1804. Two specimens of a single gathering of C. obcordata have been located in Ventenat’s herbarium at G. It represents the plant cultivated in Cels’s garden. The most complete collection is designated here as the lectotype . Tortosa (1992: 235) designated the type specimen at P but no collection has been located at P in the general collection.