Show Lower Taxa
Difference between revisions of "Hylocereus"
Contr. U.S. Natl. Herb. 12: 428. 1909.
Common names: Night-blooming cereus
Etymology: Greek hyle, forest, and Cereus, the genus from which this segregate was removed
Basionym: Cereus subsect. Hylocer eus A. Berger
Synonyms: Wilmattea Britton & Rose
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| − | --><span class="statement" id="st- | + | --><span class="statement" id="st-undefined" data-properties=""><b>Shrubs,</b> epiphytic, hemi-epiphytic, or epipetric, straggling, climbing, scandent, or pendent, irregularly many branched. <b>Roots</b> diffuse, often adventitious along stem internodes. <b>Stems</b> segmented, green, blue-green, gray-green, or somewhat whitish with wax; segments elongate, 3-winged or -angled, length highly variable, 10–500+ × [1–]4–7.5[–10] cm, distinctly narrowed proximally, glabrous; ribs (2–)3(–5), winglike to narrowly triangular in cross section, rib crests straight to undulate, crenate [toothed, notched, or lobed], often with a line of hard, brown to gray bark between areoles; areoles (10–)35–50 mm apart along ribs, oval, short woolly, sometimes subtended by minute, vestigial leaves at growing stem tip; areolar glands inconspicuous; cortex and pith mucilaginous. <b>Spines</b> 0–4[–8] per areole, whitish or yellowish to brownish [blackish or red, aging gray], acicular [awl-shaped or hairlike], straight, terete, generally short, 0–4[–10] mm, hard, bases sometimes conic or swollen, smooth, glabrous; radial and central spines not distinguishable. <b>Flowers</b> nocturnal, lateral to subterminal on 1+-year-old stems, at adaxial edges of areoles, long tubed, funnelform, [3–]25–29[–38] × [8–]15–25[–30] cm; outermost tepals often greenish, yellow, pink, or occasionally purplish red or white, 10–15 × 1–1.5 cm, margins entire; inner tepals white to cream [rarely pinkish or red], 10–15 × 1.5–2.5 cm, margins entire; ovary tuberculate [to smooth], scaly, spineless, usually without hairs or wool; scales triangular, broad, thick conspicuous, to 25 mm; stigma lobes to 24, white. <b>Fruits</b> irregularly dehiscent along 1 side, red [to purple or magenta], oblong to ovoid or spheric, [20–]50–125 × 40–120 mm, fleshy, spineless; pulp white; scales persistent, green, triangular, conspicuous, thick and fleshy, to 4+ cm; floral remnant often persistent. <b>Seeds</b> black, [elongate or] pyriform [to reniform], 2–3 mm, glossy; testa smooth or minutely textured. <b>x</b> = 11.</span><!-- |
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|family=Cactaceae | |family=Cactaceae | ||
|distribution=subtropical and tropical regions of Mexico;West Indies;Central America;n South America. | |distribution=subtropical and tropical regions of Mexico;West Indies;Central America;n South America. | ||
| + | |introduced=true | ||
|reference=None | |reference=None | ||
|publication title=Contr. U.S. Natl. Herb. | |publication title=Contr. U.S. Natl. Herb. | ||
|publication year=1909 | |publication year=1909 | ||
|special status= | |special status= | ||
| − | |source xml=https://jpend@bitbucket.org/aafc-mbb/fna- | + | |source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/9216fc802291cd3df363fd52122300479582ede7/coarse_grained_fna_xml/V4/V4_334.xml |
|subfamily=Cactaceae subfam. Cactoideae | |subfamily=Cactaceae subfam. Cactoideae | ||
|genus=Hylocereus | |genus=Hylocereus | ||
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-->[[Category:Treatment]][[Category:Cactaceae subfam. Cactoideae]] | -->[[Category:Treatment]][[Category:Cactaceae subfam. Cactoideae]] | ||
Revision as of 14:06, 27 July 2019
Shrubs, epiphytic, hemi-epiphytic, or epipetric, straggling, climbing, scandent, or pendent, irregularly many branched. Roots diffuse, often adventitious along stem internodes. Stems segmented, green, blue-green, gray-green, or somewhat whitish with wax; segments elongate, 3-winged or -angled, length highly variable, 10–500+ × [1–]4–7.5[–10] cm, distinctly narrowed proximally, glabrous; ribs (2–)3(–5), winglike to narrowly triangular in cross section, rib crests straight to undulate, crenate [toothed, notched, or lobed], often with a line of hard, brown to gray bark between areoles; areoles (10–)35–50 mm apart along ribs, oval, short woolly, sometimes subtended by minute, vestigial leaves at growing stem tip; areolar glands inconspicuous; cortex and pith mucilaginous. Spines 0–4[–8] per areole, whitish or yellowish to brownish [blackish or red, aging gray], acicular [awl-shaped or hairlike], straight, terete, generally short, 0–4[–10] mm, hard, bases sometimes conic or swollen, smooth, glabrous; radial and central spines not distinguishable. Flowers nocturnal, lateral to subterminal on 1+-year-old stems, at adaxial edges of areoles, long tubed, funnelform, [3–]25–29[–38] × [8–]15–25[–30] cm; outermost tepals often greenish, yellow, pink, or occasionally purplish red or white, 10–15 × 1–1.5 cm, margins entire; inner tepals white to cream [rarely pinkish or red], 10–15 × 1.5–2.5 cm, margins entire; ovary tuberculate [to smooth], scaly, spineless, usually without hairs or wool; scales triangular, broad, thick conspicuous, to 25 mm; stigma lobes to 24, white. Fruits irregularly dehiscent along 1 side, red [to purple or magenta], oblong to ovoid or spheric, [20–]50–125 × 40–120 mm, fleshy, spineless; pulp white; scales persistent, green, triangular, conspicuous, thick and fleshy, to 4+ cm; floral remnant often persistent. Seeds black, [elongate or] pyriform [to reniform], 2–3 mm, glossy; testa smooth or minutely textured. x = 11.
Distribution
subtropical and tropical regions of Mexico, West Indies, Central America, n South America.
Discussion
Species 18 (1 in the flora).
Selected References
None.