Acanthocereus tetragonus
Common Name(s): Barbed-Wire Cactus
Synonym(s): Cactus tetragonus, Cereus tetragonus, Cactus pentagonus, Cereus pentagonus, Acanthocereus pentagonus, Cereus acutangulus, Acanthocereus acutangulus, Cereus princeps, Acanthocereus princeps, Cereus variabilis, Acanthocereus floridanus
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| To view a chart comparing alternate taxonomy Click Here. |
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Original Description: Succulenta xx
p.169 - Wagenaar Hummelinck (1938)Stem not highly branched, first upright, later more or less suspended and only one support, to about 8 m long and about 6 m high. Stem Members to 11/2 (-2) m long, 4-5 (-6) cm thick, (2 -) 3-4 (-5) ribs; ribs strongly flattened, green, with weak, with notches at each areole directed towards the apex. Areoles round, 4 - 8 mm in diameter, 3 - 6 (-7) cm from each other, spiny, with a grayish, felt. Spines first 4-6, later, 6-8 (-10), to divided in the middle and Radial Spines, awl-shaped, straight, gray, sometimes with dark areas, with more or less, black top. Central spine usually 1, sometimes 3, oblique facing up to 4 cm long; radial spines (4 -) 5-7 (- 9), radially protruding, to 2 ½ inches long. (Stunted stem members, which become normal stem members either lose weight: approx 12 cm long, ca 1 cm thick, with 6-7 ribs; areoles small, densely crowded with 9-15 protruding needle-like spines of 3-5 mm in length.) Flower tube 14-19 cm long, 60-65 wrappers longer than 2 cm; night blooming star. Bracts are reversed-lanceolate or elliptical, focused or pointed, 6-4 times as long as wide, and 4 ¼ cm long, the inner slightly shorter than the others, focus, white, whatever the outer fleshy, greenish. Flower Soil trumpet-shaped, thick and fleshy, 10-13 cm deep, 1-1 ¾ inches wide at the base, 1 - l ¼ cm in the middle, 2 ½ - 3 ½ cm at the top, on the outside with 9-15 areoles in the axils of small, triangular scales; areoles fuzzy, brownish, often with 1-3 to 1 ½ inch long thorns. Stamens 700-900, implanted in the upper half of the flower tube. Helmet Wires 2-6 cm, the lower longer than the shorter implanted; the lowest upright, flattened, not cone-shaped at the base. Anthers erect, 1 ¾ - 8 mm long, the largest on the longest stamens, yellow or brownish. Stamp Lobe 10-12, 10-12 mm long. Style cylindrical, 11 -16 ½ cm long, 2-4 mm thick. Ovary ovoid, 1 ½ - 1 ¾ x 1 ¼ -1 ½ cm, 18-35 spiny areoles in the axils of small delta-shaped scales; areoles fuzzy, brownish, each with 1-4 to 1 ½ inch long thorns; perianth not falling. Fruit ovate or obovate, about 8 X 5 cm, red, any areole with 3-6 to 1 ¾ inch long thorns, red fruit flesh. Seeds about 4 X 3 X 2 mm, pear-shaped, fairly smooth, shiny black. |
 This icon appears next to images that have been 3rd party verified. Click Here to learn more. Click any picture below to enlarge. |
A. tetragonus
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Picture taken at: Desert Botanical Garden , Phoenix, AZ
Photographer: Daiv Freeman
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A. tetragonus
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Picture taken at: Keven Hamrick's Private Collection
Photographer: Kevin Hamrick
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A. tetragonus
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Picture taken at: Keven Hamrick's Private Collection
Photographer: Kevin Hamrick
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A. tetragonus
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Picture taken at: Habitat in Guanacaste, Costa Rica
Photographer: Byron Fan
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A. tetragonus
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Picture taken at: Habitat in Guanacaste, Costa Rica
Photographer: Byron Fan
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A. tetragonus
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Picture taken at: Habitat in Guanacaste, Costa Rica
Photographer: Byron Fan
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A. tetragonus
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Picture taken at: Habitat in Guanacaste, Costa Rica
Photographer: Byron Fan
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A. tetragonus
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Picture taken at: Habitat in Nicaragua
Photographer: Leland Smith
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A. tetragonus
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Picture taken at: Habitat in Nicaragua
Photographer: Leland Smith
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A. tetragonus
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Picture taken at: Kyle Barker's Private Collection
Photographer: Kyle Barker
Photographer's Website: Click Here
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A. tetragonus
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Picture taken at: Fairchild Botanic Garden, Miami, FL
Photographer: Gerard Ardisson
Photographer's Website: Click Here
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A. tetragonus
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Picture taken at: Gerard Ardisson's Private Collection
Photographer: Gerard Ardisson
Photographer's Website: Click Here
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A. tetragonus
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Picture taken at: Corpus Christi Texas
Photographer: Steve George
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A. tetragonus
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Picture taken at: Corpus Christi Texas
Photographer: Steve George
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A. tetragonus
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Picture taken at: Corpus Christi Texas
Photographer: Steve George
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A. tetragonus
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Picture taken at: Corpus Christi Texas
Photographer: Steve George
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A. tetragonus
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Picture taken at: Corpus Christi Texas
Photographer: Steve George
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A. tetragonus
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Picture taken at: Corpus Christi Texas
Photographer: Steve George
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*Currently 6 of 6 known species are represented on CactiGuide.com.
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