Echinopsis silvestrii Spegazzini 1905

peanut cactus

Plants usually solitary, sometimes branching to form small clumps. Stems globose to short cylindrical, 5-10 cm (2-3.9 in) high, 4-8 cm (1.6-3.1 in) in diameter. Ribs 12-14. Areoles round, whitish. Central spine one, erect. Radial spines 5-9, flattened against the stem surface. Flowers white, not fragrant, to 20 cm (7.9 in) long. Distribution: between Tucumän and Salta, northwestern Argentina. Echinopsis silvestrii is poorly known.

Echinopsis skottsbergii (Backeberg) H. Friedrich & G. D.

Rowley 1974 quisco defray jorge Trichocereus skottsbergii Backeberg 1950

Plants shrubby, branching basally with a few columnar branches to 2 m (6.6 ft) high. Stems cylindrical, gray-green, to 14 cm (5.5 in) in diameter. Ribs 16-21. Areoles grayish black. Spines light brown to gray. Central spines usually 4-6, to 12 cm (4.7 in) long. Radial spines 22-26, flexible, spreading, bristly, not sharp, to 6 cm (2.4 in) long. Flowers borne laterally, white with rose tint, 10-12 cm (3.9-4.7 in) long; floral tubes with black or gray hairs. Fruits globose, green. Distribution: along the coast from Quilimari to Talinay, Coquimbo, Chile.

Echinopsis smrziana Backeberg 1935 Soehrensia smrziana (Backeberg) Backeberg 1959, Trichocereus smrzianus (Backeberg) Backeberg 1966

Plants usually solitary, globose to short cylindrical, sometimes even longer, often prostrate at first, later erect, fresh green to gray-green, to 40 cm (16 in) long and 20 cm (7.9 in) in diameter. Ribs about 15, becoming broad. Spines quite variable, 7-14, unequal, thin, sharp, radiating, needle-like to bristly, whitish to golden brown. Flowers white, to 12 cm (4.7 in) long and in diameter. Distribution: northern Argentina.

Echinopsis spachiana

Echinopsis Spachiana (Lemaire) H. Friedrich & G. D. Rowley 1974

golden torch, torch cactus, white torch cactus Cereus spachianus Lemaire 1840, Echinocereus spachianus (Lemaire) Rumpler 1885, Trichocereus spachianus (Lemaire) Riccobono 1909 Cereus santiaguensis Spegazzini 1905, Trichocereus santiaguensis (Spegazzini) Backeberg 1959, Echinopsis santiaguensis (Spegazzini) H. Friedrich & G. D. Rowley 1974

Plants shrubby, branching basally with several erect stems to 2 m (6.6 ft) high. Stems cylindrical, 5-6 cm (2-2.4 in) in diameter. Ribs 10-15, low, rounded. Areoles large, with curly yellow wool, to 1 cm (0.4 in) apart. Spines straight, reddish yellow, becoming whitish with age. Central spine one, 1-2 cm (0.4-0.8 in) long. Radial spines 8-10,0.4-1 cm (to 0.4 in) long. Flowers white, 18-20 cm (7.1-7.9 in) long, to 15 cm (5.9 in) in diameter; floral tubes very hairy. Distribution: western Argentina.

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