Melocactus curvispinus Pfeiffer 1837


? Melocactus obtusipetalus Lemaire 1838, ? Cactus obtusipetalus (Lemaire) Britton & Rose 1922

Melocactus delessertianus Lemaire 1839 Melocactus caesius H. L. Wendland 1840, Cactus caesius (H. L. Wendland) Britton & Rose 1922, M. curvispinus subsp.caesius (H. L. Wendland) N.P.Taylor 1991 Melocactus humilis Suringar 1889 Melocactus lobelil Suringar 1896 Melocactus ruestii K. Schumann. 1896

Melocactus Salvador Muri I lo 1897, Cactus sa/rador(Murillo) Britton & Rose 1922

Cactus maxonii Rose 1907, Melocactus maxonii (Rose) Gtirke 1908,

M. ruestii subsp. maxonii (Rose) Elizondo 1986 Melocactus guatemalensis Gürke & Eichlam 1908 Cactus oaxacens/s Britton & Rose 1923, Melocactus oaxacens/s (Britton & Rose) Backeberg 1960, M. ruestii subsp. oaxacensis (Britton & Rose) Elizondo 1986

Melocactus Concinnus
Melocactus concinnus
Melocactus Conoideus
Melocactus conoideus

460 Melocact us curvispinus

Melocactus guitartii León 1934

Melocactus dawsonii Bravo 1965, M. curvispinus subsp. dawsonii

(Bravo) N.P.Taylor 1991 Melocactus loboguerreroi Cárdenas 1967 Melocactus holguinensis Areces 1976 Melocactus jakusii Mészáros 1977

Melocactus maxonii subsp. sanctae-rosae (L. D. Gómez) Ellzondo

1986, M. ruestiisubsp. sanctae-rosae (L. D. Gómez) Elizondo 1986 Melocactus ruestii subsp. cintalapensis Elizondo 1986

Plants depressed globose to short cylindrical, light to dark green, somewhat glaucous, 6-30 cm (2.4-12 in) high, 8-27 cm (3.1-11 in) in diameter. Ribs 10-16, acute, sometimes becoming tuberculate. Areoles sunken into the notches of the ribs. Spines dirty white to nearly black, some curved. Central spines 1-4, sometimes absent, erect, 15-52 mm (0.6-2 in) long. Radial spines 6-11, sometimes more, lowermost longest, 3-42 mm (to 1.7 in). Cephalia usually small, 3-4 cm (1.21.6 in) high, 7-11 cm (2.8-4.3 in) in diameter, usually with conspicuous long-exserted reddish brown bristles. Flowers exserted more than 10 mm (0.4 in) from the cephalium, opening early to midafternoon, dark to light pinkish magenta, 18-43 mm (0.7-1.7 in) long, 10-25 mm (0.4-1 in) in diameter. Fruits club shaped, pink to bright red to deep magenta, paler toward the base, 16-60 mm (0.6-2.4 in) long. Distribution: throughout much of the range of the genus, from Mexico south into Peru, thence northeast into Colombia and Venezuela, into the Caribbean.

The variable Melocactus curvispinus is fairly well defined but has been subdivided into several species, especially by hobbyists. Taylor (1991a) recognized three subspecies. Subspecies curvispinus has strongly backward curving radial spines to 28 mm (1.1 in) long; it occurs in Mexico, Central America, Colombia, and western Venezuela at elevations up

Melocactus curvispinus subsp. caesius to 1500 m (4920 ft). Subspecies caesius has nearly straight radial spines or radial spines longer than 28 mm (1.1 in); it occurs in the Caribbean and the coastal regions of Colombia and Venezuela up to 700 m (2300 ft). Subspecies dawsonii is restricted to Jalisco in western Mexico.

Continue reading here: Melocactus deinacanthus Buining Brederoo 1973

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