Autor: Britton & Rose • ETYMOLOGY A genus honouring Nicolas Esposto (1877-?), Peruvian botanist of Italian origin, founder of the National School of Agriculture of La Molina, Lima, Peru. Portrait is unknown. • DESCRIPTION A genus of bushy or treelike plants, branching usually from the base or halfway up, with columnar stems having numerous ribs. Spines…
Autor: Rose • ETYMOLOGY A genus honouring Don Bias Escontria Bustamante (1848-1906), governor of the State of San Luis Potosi, in Mexico (see portrait above). • DESCRIPTION A genus of treelike plants (up to 7 m high), becoming densely branched with age, developing a trunk, with cylindrical branches having 7-8 triangular ribs. Areoles close-set, elongated….
Autor: Britton & Rose • ETYMOLOGY Agenus honouring the Mexican brothers Romulo (1872-1946) and Numa Escobar (1874-1949), founders of the Escuela Particular de Agricultura in 1906, in Ciudad Juarez, Chihuahua, Mexico (see portraits above, public domain). • DESCRIPTION A genus of low-growing, small solitary or caespitose plants, with stems globose or cylindrical, not ribbed. Spines usually…
Autor: Philippi • ETYMOLOGY “Woolly fig”, referring to the typical woolly fruit of most species of the genus. • DESCRIPTION A genus of usually large, solitary, globose plants, the apex more or less covered with wool, with fibrous roots, slightly turbiniform in E. rodentiophila. Ribs quite numerous (18-42 or more), usually tuberculate. Spines strongly aciculate, sturdy,…
Autor: Backeberg • ETYMOLOGY “Woolly head”, referring to the abundant wool at the top of the species in this genus. • DESCRIPTION A genus of plants becoming massive and columnar with age, with heliotropic apex, typically inclined, densely woolly. Ribs well defined, usually many, areoles close each other. Spines not hooked, usually fine, flexible and…