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Haplophyton cimicidum auct. non A. DC.  
Family: Apocynaceae
Haplophyton cimicidum image
Liz Makings
  • SW Field Guide
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Kearney and Peebles 1971, McLaughlin 1994, Wiggins 1964
Common Name: cockroachplant Nativity: Native Lifeform: Subshrub General: Subshrubs, 20-60 cm tall; stems bright green, sometimes white, gray, or light tan with age, branched, often woody at the base, lightly pubescent. Leaves: Leaves mostly alternate, short-petiolate; blades bright green, lanceolate, sparsely hirsute, 2-4 cm long. Flowers: Yellow or sometimes blue, solitary or in clusters of 2 or 3 at branch tips; generally with 5 petals which pinwheel out in an overlapping whorl from the end of the corolla tube, corolla tube 6-9 mm long, pubescent externally. Fruits: Pair of elongated follicles (capsules that split apart along a single suture line) bearing long, slender, black seeds, the seeds with a deciduous tuft of long white hairs at the tips. Ecology: Found on rocky and gravely slopes, often in canyons, from 2,000-4,500 ft (610-1372 m), flowers July-October. Distribution: s AZ, s NM, sw TX; south to c MEX. Notes: Distinguished by being a semi-short erect perennial subshrub to ca. 60 cm; alternate leaves (some appearing opposite at first glance) which tend to hang downward with conspicuous, white, appressed hairs aligned towards the leaf tip in straight lines; hairy, linear calyx lobes; and a showy yellow, tubular corolla with lobes overlapping and emerging from a twisted bud. Ethnobotany: Contains alkaloids used as an insecticide to cockroaches, flies, fleas, lice and mosquitos. Etymology: Haplophyton comes from Greek kaploos which means simple and phyton which means plant; cimicidum is from the Latin cimex (bug), and -cide from the Latin caedere (to kill), referring to the plant-s use as an insecticide. Synonyms: H. cimicidum var. crooksii, Haplophyton crooksii Editor: LCrumbacher 2011, FSCoburn 2015, AHazelton 2015
Haplophyton cimicidum
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Anthony Mendoza
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Liz Makings
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Anthony Mendoza
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Sue Carnahan
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Anthony Mendoza
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Anthony Mendoza
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Stephen Hale
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Sue Carnahan
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Sue Carnahan
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Patrick Alexander
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Patrick Alexander
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Patrick Alexander
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Patrick Alexander
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Liz Makings
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Sue Carnahan
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Shannon Henke
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Anthony Mendoza
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Sue Carnahan
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Fred Fisher
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The National Science Foundation
Development supported by National Science Foundation Grants (DBI 9983132, BRC 0237418, DBI 0743827, DBI 0847966)
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