Plants branching basally, 1-2 m (3.3-6.6 ft) high. Stems columnar, tapering toward the tips, fresh green, 4-5 cm (1.6-2 in) in diameter. Ribs 4-5, low, with somewhat notched margins. Spines about 11, not differentiated as centrals and radi-als, spreading, the shortest ones to 0.5 cm, the longest ones 2.5 cm (1 in) and awl shaped. Flowers pinkish salmon, to 6 cm (2.4 in) long. Fruits globose, 3-5 cm (1.2-2 in) in diameter, with long thin spines. Distribution: La Paz, Bolivia, at an elevation of 3000 m (9800 ft).
Corryocactus erectus (Backeberg) F. Ritter 1981
Erdisia erecta Backeberg 1942
Erdisia aureispina Backeberg & H. Jacobsen 1957
Erdisia ruthae H. Johnson ex Backeberg 1962
Bolivicereus pisacensis Knize 1969, Borzicactus pisacensis (Knize)
G. D. Rowley 1976 Bolivicereus soukupii Knize 1969, Borzicactus soukupii (Knize)
G. D. Rowley 1976 Corryocactus pyroporphyranthus F. Ritter 1981 Corryocactus serpens F. Ritter 1981
Plants semiprostrate to erect, little branching, to 1 m (3.3 ft) high. Stems slender, columnar, to 3 cm (1.2 in) in diameter. Ribs 5-9, narrow, not prominent. Spines 8-18, light colored with darker bases, spreading in all directions, unequal, not readily differentiated as centrals and radials, to 1 cm (0.4 in) long. Flowers light red to scarlet, 2.5-4 cm (1-1.6 in) long. Fruits light red, to 2 cm (0.8 in) in diameter. Distribution: Cuzco division, Peru.
Corryocactus huincoensis f. Ritter 1981 Corryocactus matucanensis F. Ritter 1981
Plants shrubby, semierect to pendent and sprawling. Stems dark green, 1-1.5 m (3.3-4.9 ft) long, 1-2.5 cm (0.4-1 in) in diameter. Ribs 8-12 with notched margins. Spines needlelike, fine, not well differentiated as centrals and radials, whitish to reddish brown or black, to 2 cm (0.8 in) long. Flowers yellow. Fruits green, spiny, to 1.5 cm (0.6 in) in diameter. Distribution: Huinco near Santa Eulalia, Lima, Peru.
Corryocactus melanotrichus (K. Schumann) Britton & Rose 1920
Cereus melanotrichus K. Schumann 1897, Erdisia melanotricha (K.
Schumann) Backeberg 1935 Corryocactus perezianus Cárdenas 1952 Corryocactus tarijensis Cárdenas 1952
Plants shrubby, freely branching and forming small clumps to 4 m (13 ft) high. Stems erect, yellowish green, to 6 cm (2.4 in) in diameter. Ribs 7-9, low. Spines 10-15, light yellow to brown, later gray, awl shaped, unequal, 0.7-2 cm (0.3-0.8 in) long, the longest one to 3 cm (1.2 in). Flowers purplish red, to 5 cm (2 in) long and 6 cm (2.4 in) in diameter. Fruits globose, spiny, soft, 4-8 cm (1.6-3.1 in) in diameter. Distribution: La Paz, Bolivia.
Corryocactus pulquiensis Cárdenas 1957 Corryocactus ayopayanus Cárdenas 1952
Plants climbing or creeping with few branches, 3-4 m (9.813 ft) long. Stems shiny dark green, 3-4 cm (1.2-1.6 in) in diameter. Ribs 4-5, blunt, notched. Spines 3-7, not well differ-
entiated as centrals and radials, somewhat flattened against the surface, 3 directed downward, needle-like to awl shaped, thin, white with brownish tips, 0.5-2 cm (0.2-0.8 in) long. Flowers often borne in clusters of three or four near the stem tips, broadly funnelform to bell shaped, golden yellow to orange, 7-7.5 cm (2.8-3 in) long. Distribution: Santa Cruz, Bolivia. Fruits of Corryocactus pulquiensis are harvested (Chapter 2, under Cacti as Food). The fruits are illustrated on page 59.
Corryocactus quadrangularis (Rauh & Backeberg) F. Ritter 1958
Erdisia quadrangularis Rauh & Backeberg 1957
Plants shrubby, branching basally, sprawling and sometimes pendent, 1-1.5 m (3.3-4.9 ft) high. Stems 4-5 cm (1.6-2 in)
in diameter. Ribs 4-5, deep, winglike, undulating. Central spines 3-4,4-6 cm (1.6-2.4 in) long. Radial spines several. Flowers golden yellow to carmine, 4-5 cm (1.6-2 in) long. Fruits reddish green, to 3 cm (1.2 in) in diameter. Distribution: Ayacucho, Peru.
Corryocactus squarrosus (Vaupel) Hutchison 1963 Cereus squarrosus Vaupel 1913, Erdisia squarrosa (Vaupel) Britton & Rose 1920
Erdisia tenuicula Backeberg 1957, Corryocactus tenuiculus (Backeberg) Hutchison 1963 Corryocactus otuyensis Cárdenas 1963 Erdisia fortalezensis F. Ritter 1964 Corryocactus brachycladus F. Ritter 1981 Corryocactus chavinilloensis F. Ritter 1981 Corryocactus gracilis F. Ritter 1981 Corryocactus megarhizus F. Ritter 1981 Corryocactus melaleucus F. Ritter 1981 Corryocactus odoratus F. Ritter 1981 Corryocactus pillspinus F. Ritter 1981 Corryocactus quivillanus F. Ritter 1981
Plants shrubby, sprawling to somewhat ascending with long, branching stems 1-2 m (3.3-6.6 ft) long. Stems cylindrical, deep green, 1-3 cm (0.4-1.2 in) in diameter. Ribs 5-9. Spines yellowish, unequal, swollen basally. Central spine one, pointing downward, to 3 cm (1.2 in) long. Radial spines 9-13, some pointing downward, to 1.2 cm (0.5 in) long. Flowers bright red, to 4.5 cm (1.8 in) long. Fruits fleshy, to 2.5 cm (1 in) long. Distribution: Junin, Peru.
Corryocactus squarrosus, photograph by Gordon Rowley
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