Cactus oreas (Miquel) Britton & Rose 1922
Melocactus cremnophilus Buining & Brederoo 1972, M. oreas subsp.
cremnophilus (Buining & Brederoo) P. J. Braun 1988 Melocactus rubrisaetosus Buining, Brederoo &Theunissen 1977, M. oreas subsp. rubrisaetosus (Buining, Brederoo &Theunissen) P. J. Braun 1988
Plants depressed globose to elongate, medium to dark green, 8.5-35 cm (3.3-14 in) high, 10-18 cm (3.9-7.1 in) in diameter. Ribs 10-16, round in cross section but with acute edges. Spines yellowish brown to reddish brown, round in cross section. Central spines 1-4,27-45 mm (1.1-1.8 in) long. Radial spines 8-11, slender, flexible, straight or curved, 40-80 mm (1.6-3.1 in) long. Cephalia to 12 cm (4.7 in) high, 4-8 cm (1.6-3.1 in) in diameter, with dark reddish brown bristles. Flowers light to dark pinkish magenta, 17-22 mm (0.70.9 in) long, 7-10 mm (0.3-0.4 in) in diameter. Fruits elongate club shaped, red at the tip and magenta to pinkish below, 14-28 mm (0.6-1.1 in) long. Distribution: Bahia, Brazil.
Two subspecies of Melocactus oreas are recognized by the International Cactaceae Systematics Group. Subspecies oreas has stems that are globose to elongate and 10-15 cm (3.9-5.9 in) high, sometimes as high as 35 cm (14 in); it occurs at elevations below 500 m (1600 ft) in eastern Bahia. Subspecies cremnophilus has smaller stems that are often strongly depressed globose, usually less than 12 cm (4.7 in) high; it occurs above 700 m (2300 ft) in the more northern part of Bahia.
Melocactus pachyacanthus Buining & Brederoo 1975 Melocactus pachyacanthus subsp. viridis N. P. Taylor 1991
Plants depressed globose to elongate, green to gray-green, sometimes glaucous, 15-30 cm (5.9-12 in) high, to 20 cm (7.9 in) in diameter. Ribs 9-11, low. Spines all stout, reddish brown, overlaid by gray, some hooked in seedlings. Central spines 1-3, horizontally extended, 28-48 mm (1.1-1.9 in) long. Radial spines 8-9, straight or slightly curved, 25-49 mm (1-1.9 in) long. Cephalia to 12 cm (4.7 in) high and 10
Melocactus pachyacanthus subsp. j pachyacanthus cm (3.9 in) in diameter, nearly lacking wool but with dense dull pinkish red bristles. Flowers sometimes only partly expanded and barely exserted above the cephalia, pinkish magenta, 22-25 mm (0.9-1 in) long, 7-10 mm (0.3-0.4 in) in diameter. Fruits somewhat flattened, white or pale pink, 16-20 mm (0.6-0.8 in) long. Distribution: Bahia, Brazil.
Two subspecies of Melocactus pachyacanthus are recognized. Subspecies pachyacanthus has globose to elongate stems that are often strongly glaucous, especially when young; it occurs at elevations below 700 m (2300 ft) in northern Bahia. Subspecies viridis has depressed globose stems that are almost always not glaucous; it occurs above 700 m (2300 ft) in northern central Bahia.
Was this article helpful?
You Might Just End Up Spending More Time In Planning Your Greenhouse Than Your Home Don’t Blame Us If Your Wife Gets Mad. Don't Be A Conventional Greenhouse Dreamer! Come Out Of The Mould, Build Your Own And Let Your Greenhouse Give A Better Yield Than Any Other In Town! Discover How You Can Start Your Own Greenhouse With Healthier Plants… Anytime Of The Year!