Cereus hildmannianus K Schumann 1890

hedge cactus, queen ofthe night

Cactusperuvianus Linnaeus 1753, Cereus peruvlanus (Linnaeus) P. Miller 1768, misapplied; see under C. repandus

Cereus Hankeanus Flower
Cereus hankeanus

Cere us huilunchu 145

?Cereus alacriportanus Pfeiffer 1837, ? Piptanthocereus alacripor-

tanus (Pfeiffer) F. Ritter 1979 Cereusxanthocarpus K. Schumann 1903, Piptanthocereus xanthocar-pus (K. Schumann) F. Ritter 1979, C. hildmannianus subsp .xantho-carpus (K. Schumann) P. J. Braun & Esteves 1995 Cereus milesimus E. C. Rost 1932 Piptanthocereus bageanus F. Ritter 1979 Piptanthocereus neonesioticus F. Ritter 1979, Cereus neonesioticus

(F. Ritter) P.J. Braun 1988 Piptanthocereus uruguayensis F. Ritter 1979, not validly published; Cereus uruguayanus R. Kiesling 1982, C. hildmannianus subsp. uruguayanus (R. Kiesling) N. P.Taylor 1998

Plants treelike with numerous branches, to 10 m (33 ft) high with distinct trunks. Stems cylindrical, segmented, blue-green to dull green, often glaucous when young, to 15 cm (5.9 in) in diameter. Ribs 4-6, acute, to 3.5 cm (1.4 in) high. Areoles brown. Spines usually absent. Flowers very large, white, 25-30 cm (9.8-12 in) long. Fruits globose, red with white pulp. Distribution: very uncertain, probably Brazil, Paraguay, Uruguay, and Argentina.

Two subspecies of Cereus hildmannianus are recognized. Subspecies hildmannianus occurs widely throughout the range of the species and is almost always spineless. Subspecies uruguayanus occurs only in Uruguay.

Cereus horrispinus Backeberg 1930 Subpilocereus horrispinus (Backeberg) Backeberg 1951 Pilocereus wagenaarii Croizat 1950 Subpilocereus ottonis Backeberg 1960

Plants treelike with a few branches, to 5 m (16 ft) high. Stems cylindrical, blue-green, becoming olive green with age. Ribs 4-5, rounded. Areoles strongly felted, oblong. Central spine one, stout, awl shaped, whitish gray with dark base, to 10 cm (3.9 in) long. Radial spines 6-7, whitish gray with darker bases, to 2.5 cm (1 in) long. Flowers white, to 9 cm (3.5 in) long. Fruits globose to oblong, pink. Distribution: northern Colombia.

Cereus huilunchu Cárdenas 1951 Piptanthocereus huilunchu (Cárdenas) F. Ritter 1980

Plants treelike, much branched, 3-4 m (9.8-13 ft) high with well-formed trunks. Stems cylindrical, segmented, gray-green, 6-7 cm (2.4-2.8 in) in diameter. Ribs 5, compressed, 2-3 cm (0.8-1.2 in) high. Areoles elliptical, gray. Spines 4-6, gray, needle-like, 2.5-3 cm (1-1.2 in) long. Flowers white, to 13 cm (5.1 in) long. Fruits cylindrical, red with white pulp, 6-7 cm (2.4-2.8 in) long. Distribution: Ayopaya province, Cochabamba, Bolivia.

Cereus Hexagonus Plants

Cereus hexagonus, photograph by Keith Grantham

Cereus hildmannianus subsp. uruguayanus, photograph by Roberto Kiesling

146 Cereus insularis

Cereus insularis Hemsley 1884 Monvillea insularis (Hemsley) Britton & Rose 1920

Plants shrubby, many branched, usually scrambling. Stems deep green, 2-3 cm (0.8-1.2 in) in diameter. Ribs 6-8, straight. Areoles close set, gray. Spines 12-15, slender, needle-like, brownish yellow to grayish brown, unequal, to 12 mm (0.5 in) long. Flowers yellow, 12-15 cm (4.7-5.9 in) long. Fruits oblong. Distribution: Säo Miguel Island off the eastern coast of Brazil.

Cereus jamacaru A. P. de Candolle 1828, conserved name mandacarü

Piptanthocereus jamacaru (A. P. de Candolle) Riccobono 1909 Piptanthocereus cabralensis F. Ritter 1979, Cereus calcirupicola subsp. cabralensis (F. Ritter) P. J. Braun & Esteves 1995 Piptanthocereus calcirupicola F. Ritter 1979, Cereus calcirupicola (F. Ritter) Rizzini 1987, C. jamacaru subsp. calcirupicola (F. Ritter) N. P. Taylor & Zappi 1997 Piptanthocereus cipoensis F. Ritter 1979, Cereus calcirupicola subsp.

cipoensis (F. Ritter) P.J. Braun & Esteves 1995 Piptanthocereus goiasensis F. Ritter 1979, Cereusgoiasensis (F. Ritter) P. J. Braun 1988, C. jamacaru subsp. goiasensis (F. Ritter) P. J. Braun & Esteves 1995

Plants treelike with many erect branches forming dense crowns, to 10 m (33 ft) high with distinct trunks to 60 cm (24 in) in diameter. Stems cylindrical, segmented, blue-green, glaucous when young, to 15 cm (5.9 in) in diameter. Ribs 4-6, compressed, slightly wavy marginally, to 3.5 cm (1.4in) high. Areoles separated by notches, 2-4 cm (0.8-1.6

Cereus insularis, photograph by Jean-Marie Solichon in) apart, gray. Spines awl shaped, pale yellow or brownish, later black. Central spines 2-4, spreading, 8-20 cm (3.1-7.9 in) long. Radial spines 5-7, to 1.5 cm (0.6 in) long. Flowers very large, lateral, oblique, white, 20-30 cm (7.9-12 in) long, 18-20 cm (7.1-7.9 in) in diameter. Fruits bright red, to 12 cm (4.7 in) long. Distribution: northeastern Brazil.

Two subspecies of Cereus jamacaru are recognized here. Subspecies jamacaru is widely distributed, both naturally

Cereus Calcirupicola

Cereus jamacaru subsp. calcirupicola, photograph by Urs Eggli

Cereus lanosus 147

and by human activities, and subspecies calcirupicola occurs in Minas Gerais.

Cereus kroenleinii N. P. Taylor 1995 Monvillea kroenleinii R. Kiesling 1994, not validly published; Cereus phatnospermus subsp. kroenleinii (N. P. Taylor) P. J. Braun & Esteves 1997

Plants shrubby with creeping or ascending branches. Stems long cylindrical, dark green, very glaucous, square in cross section when young, nearly round in cross section when mature, 1-4 m (3.3-13 ft) long, to 2.5 cm (1 in) in diameter. Ribs 4-5, forming distinct tubercles or podaria. Areoles round, confluent apically, otherwise separated, with long woolly hairs. Spines needle-like, very thin, sharp, dark brown with yellow bases. Central spine one, 2-3 cm (0.8-1.2 in) long. Radial spines 5, to 1.5 cm (0.6 in) long, lower one shortest. Flowers white with rose-colored tips, 9-10 cm (3.5-3.9 in) long. Fruits ovoid, ruby red with violet tint, to 3.7 cm (1.5 in) long. Distribution: Paraguay, Bolivia, and Brazil.

Cereus lamprospermus K. Schumann 1899 Piptanthocereus lamprospermus (K. Schumann) F. Ritter 1979 Piptanthocereus colosseus F. Ritter 1980, Cereus lamprospermus subsp. colosseus (F. Ritter) P. J. Braun & Esteves 1995

Plants treelike with many upright branches, 6-15 m (20-49 ft) high with distinct trunks. Stems cylindrical, segmented, gray-green, 10-12 cm (3.9-4.7 in) in diameter. Ribs 5-7, thick, obtuse, 3-7 cm (1.2-2.8 in) high. Areoles nearly round, widely separated, gray. Spines nearly absent on young plants, otherwise 5-8, straight, yellowish brown, 1-6 cm (0.4-2.4 in) long. Flowers white, 15-25 cm (5.9-9.8 in) long. Fruits orange-brown with white pulp, 8-12 cm (3.1-4.7 in) long. Distribution: Paraguay and Bolivia.

Two subspecies of Cereus lamprospermus are recognized. Subspecies lamprospermus usually reaches 9 m (30 ft) high and has 4-7 ribs; it occurs in northwestern Paraguay. Subspecies colosseus often reaches 15 m (49 ft) high and has 5-7 ribs; it occurs in Bolivia.

Cereus lanosus (F. Ritter) P. J. Braun 1988 Piptanthocereus lanosus F. Ritter 1979

Plants shrubby, much branched, semiprostrate, to 1.5 m (4.9 ft) high. Stems long cylindrical, blue-green, 5-7 cm (2-2.8 in) in diameter. Ribs 5-7, to 2.5 cm (1 in) high. Areoles round, with long white wool. Spines 10-14, fine, needle-like, straight, orange with reddish bases, 4-10 mm (to 0.4 in) long. Distribution: Cordillera department, Paraguay. Cereus lanosus is poorly known.

Magic Flower Sketch
Cereus kroenleinii, photograph by JeanMarie Solichon
Cereus lamprospermus subsp. colosseus

148 Cereus mirabella

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