Autor: Britton & Rose • ETYMOLOGY In Greek, ≪top cactus≫, referring to the characteristic top-shaped form of the plants in this genus. • DESCRIPTION A genus of plants usually solitary, sometimes branched, hemicryptophytic, sclerotic, globose, turbinate or cylindrical, the apex strongly depressed and woolly. Ribs absent, tubercles imbricated and spiralled, rhomboid flattened, keeled at the base;…
Autor: Britton & Rose • ETYMOLOGY Genus honouring Francis Lynde Stetson (1846-1920), of New York, who was a lawyer fascinated by botany. He was also an administrator of the New York Botanical Garden. • DESCRIPTION A monotypic genus of massive treelike plants reaching up to 8 m high, strongly branched (up to 100 or more), with…
Autor: Berger • ETYMOLOGY “Crowned cereus”, referring to the characteristic annular cephalium of the unique species in this genus. • DESCRIPTION A monotypic genus of columnar plants, mostly solitary, rarely branched, reaching 2-5m high, with st;ems irregularly segmented according to new growth, bluish green, 13-18 straight ribs. Areoles close-set, strongly woolly, provided with 20 very short…
Autor: (Berger) Riccobono • ETYMOLOGY “Narrow cereus”, referring to the ribs of most species within the genus, which are narrow. • DESCRIPTION A genus of treelike or shrubby, columnar, erect, pendulous or exceptionally creeping (S. eruca) plants, sometimes forming impenetrable thickets (S. gummosus), usually strongly branched, some species from the base, others irregularly branched, sometimes forming…
Autor: Braun & Esteves Pereira • ETYMOLOGY “Dry fruit” characteristic of the fruit of this genus, which dries when ripe. • DESCRIPTION A genus of columnar plants with erect stems, usually solitary, bluish, with a very woody vascular cylinder, with a continuous and deeply sunken cephalium, developing when the stem exceeds one metre, densely furnished with…