Autor: Miller • ETYMOLOGY Genus honouring Nicolas-Claude Fabri de Peiresc (1580-1637), French astronomer, botanist and naturalist (misspelled). • DESCRIPTION A genus of shrubby to treelike plants, much branched, with sometimes tuberous roots. Branches cylindrical, hardly succulent, non-segmented, non-ribbed and not tuberculate, with stoma present on stems, with persistent green epidermis, delaying making bark (periderm). Leaves present,…
Autor: (Berger) Britton & Rose • ETYMOLOGY ≪Tail cactus≫, referring to the characteristically thin and elongated stems of the genus. • DESCRIPTION Genus of shrubby plants with fine and long prostrate or semi erect stems, usually little branched, using the surrounding vegetation for support. Stems slender and ribbed, reaching up to 4 m long, with papillose…
Autor: Ehrenberg • ETYMOLOGY ≪bearing axes≫, in reference to the typical form of axe heads that the tubercles have in the first described species of this genus. • DESCRIPTION A genus of dwarf plants, solitary or caespitose, globose flattened, geophytic living at ground level, not ribbed, with tubercles arranged spirally, with spindle-shaped root; areoles rudimentary, dimorphic,…
Autor: Britton & Rose • ETYMOLOGY ≪Plain Cactus≫, referring to the characteristic habitat of the genus, the Great Plains of the United States. • DESCRIPTION A genus of small low growing plants, subglobose to cylindrical, solitary or caespitose, not ribbed but tuberculate with the apex depressed. Spines hiding the epidermis, variable in number, radial sometimes pectinate;…
Autor: Spegazzini • ETYMOLOGY Genus honouring Lorenzo Raimundo Parodi, Argentine agricultural engineer and botanist (1895-1966). • DESCRIPTION A genus of small globose to shortly columnar, solitary or caespitose plants, with the apex depressed, with ribs defined or divided into tubercles. Spines straight, curved or hooked. Flowers diurnal, usually self-sterile, funnel-shaped to bell-shaped, appearing near the apex,…