Autor: Ritter • ETYMOLOGY “Closed head cactus”, defining the almost closed, tubular flowers, and the pseudocephalium, the two main features of this genus. • DESCRIPTION Monospecific genus of columnar shrubby plants, branching from the base, low ribs with a V-shaped groove; spines finely setose . Flowers diurnal, self sterile, tubular, red, appearing in a lateral pseudocephalium…
Autor: Pfeiffer • ETYMOLOGY “Head candle” referring to the pseudocephalium near top of the stems in this genus, resembling a head. • DESCRIPTION A genus of treelike, columnar erect plants, solitary or sparsely branched, branching usually from the base, with the areoles close each other. Many radial spines, setose, or with long hair which sometimes cover…
Autor: Cárdenas • ETYMOLOGY Genus honouring the Argentine botanist Alberto Castellanos (1896-1968). See portrait above, public domain. • DESCRIPTION Monospecific genus of treelike plants, branching from the base, with constricted cylindrical stems. Vegetative shoots have 9 ribs, grey areoles, brown spines; long gray to brown bristles appear along the flowering stems. Flowers nocturnal, self-sterile, bell-shaped, scaly…
Autor: Britton & Rose • ETYMOLOGY A genus honouring the North American philanthropist of Scottish origin Andrew Carnegie (1835-1919) whose foundation financed, among others, the works of Britton & Rose (see portrait above, public domain). • DESCRIPTION Monospecific genus of giant massive and slow-growing plants, with thick, columnar, branched stems, with very close areoles. Flowers open day and…
Autor: Ritter • ETYMOLOGY ” Flower enveloped with a hood “, designating the main feature of the genus, whose flowers are very distinct in that they begin by looking like a new stem segment, and as they develop they emerge out of the end and remain partly covered by the floral tube. • DESCRIPTION Monospecific genus of shrubby…