View source for Echinomastus warnockii

{{Treatment/ID
|accepted_name=Echinomastus warnockii
|accepted_authority=(L. D. Benson) Glass & R. A. Foster
|publications={{Treatment/Publication
|title=Cact. Succ. J. (Los Angeles)
|place=47: 222. 1975
|year=1975
}}
|basionyms={{Treatment/ID/Synonym
|name=Neolloydia warnockii
|authority=L. D. Benson
}}
|synonyms={{Treatment/ID/Synonym
|name=Sclerocactus warnockii
|authority=(L. D. Benson) N. P. Taylor
}}
|hierarchy=Cactaceae;Cactaceae subfam. Cactoideae;Echinomastus;Echinomastus warnockii
|hierarchy_nav=<div class="higher-taxa"><div class="higher-taxon"><small>family</small>[[Cactaceae]]</div><div class="higher-taxon"><small>subfamily</small>[[Cactaceae subfam. Cactoideae]]</div><div class="higher-taxon"><small>genus</small>[[Echinomastus]]</div><div class="higher-taxon"><small>species</small>[[Echinomastus warnockii]]</div></div>
|volume=Volume 4
|mention_page=page 193, 196
|treatment_page=page 195
}}<!--

--><span class="statement" id="st-d0_s0" data-properties="stem atypical length;stem length;stem atypical width;stem width"><b>Stems </b>(3–) 4–10 × (2.5–) 3–6.5 cm;</span> <span class="statement" id="st-d0_s1" data-properties="rib count">ribs 13;</span> <span class="statement" id="st-d0_s2" data-properties="areole atypical some measurement;areole some measurement;areole arrangement">areoles 12–16 (–20) mm apart along ribs;</span> <span class="statement" id="st-d0_s3" data-properties="areolar gland count">areolar glands absent.</span> <span class="statement" id="st-d0_s4" data-properties="spine count;spine coloration;spine coloration;spine coloration;spine coloration;spine coloration;spine coloration;spine coloration;spine coloration;spine coloration;spine coloration;spine coloration;spine coloration;spine coloration;spine coloration;spine coloration;spine coloration;spine coloration;spine coloration;spine coloration;spine coloration;spine coloration;spine coloration;spine coloration;spine coloration;spine coloration;spine coloration;spine coloration;spine coloration;spine coloration;spine coloration;spine coloration;spine coloration"><b>Spines </b>12–20 per areole, tan to pale gray, pinkish, or yellowish-brown (rarely dull white), usually tipped paler (“frosted”) gray or blue-gray;</span> <span class="statement" id="st-d0_s5" data-properties="spine arrangement;spine count">radial spines 11–17 per areole;</span> <span class="statement" id="st-d0_s6" data-properties="spine arrangement;spine length;spine width">abaxial (shortest) radial spine 8–13 × 0.31–0.55 mm;</span> <span class="statement" id="st-d0_s7" data-properties="adaxial lateral spine arrangement;adaxial lateral spine atypical some measurement;adaxial lateral spine some measurement">adaxial and lateral (longest) radial spines (11–) 14–21 mm;</span> <span class="statement" id="st-d0_s8" data-properties="central spine atypical count;central spine atypical count;central spine count;abaxial central spine course;abaxial central spine orientation;abaxial central spine some measurement">central spines (0–) 1 (–4) per areole, abaxial central spine usually straight, rarely porrect, 11–18.5 mm (absent in some populations);</span> <span class="statement" id="st-d0_s9" data-properties="adaxial central spine orientation;adaxial central spine fixation or orientation;adaxial central spine length;adaxial central spine width;spine arrangement">adaxial central spines erect and loosely appressed against radial spines, 12–25 × 0.4–0.5 mm.</span> <span class="statement" id="st-d0_s10" data-properties="flower length;flower width"><b>Flowers </b>2.3–2.6 × 2.4–3.1 cm;</span> <span class="statement" id="st-d0_s11" data-properties="inner tepal coloration;inner tepal coloration;inner tepal coloration;inner tepal coloration;inner tepal coloration;inner tepal coloration;inner tepal coloration;inner tepal coloration;inner tepal length;inner tepal width;midline prominence">inner tepals white or creamy white, sometimes with midstripes or faint midlines of pale green, greenish tan, dull pinkish brown, or olive-gray, 1–2 cm × 1.5–4.8 mm;</span> <span class="statement" id="st-d0_s12" data-properties="stigma lobe coloration;stigma lobe coloration">stigma lobes green or yellow-green.</span> <span class="statement" id="st-d0_s13" data-properties="fruit dehiscence;fruit dehiscence;fruit shape;fruit length;fruit width;2n chromosome count"><b>Fruits </b>indehiscent or disintegrating irregularly, coffin-shaped, ± 10 × 6–10 mm. <b>2n</b> = 22.</span><!--

-->{{Treatment/Body
|habitat=Chihuahuan desert scrub, low hills, gravelly bajadas, with sparse grasses and creosote bushes or in dense scrub with Texas false-agave, lechuguilla, and silverleaf, diverse substrates including limestone, tuff, and gypsum
|elevation=500-1000(-1400) m
|distribution=Tex.
|discussion=<p>Echinomastus warnockii is very difficult to distinguish from E. intertextus var. dasyacanthus, except that the former has green stigma lobes and indehiscent fruits. Flowers of E. warnockii taper to their bases, unlike the broad-based flowers of E. intertextus. The photograph accompanying L. D. Benson’s original diagnosis of E. warnockii portrayed the relatively distinctive E. mariposensis instead, resulting in persistent confusion.</p><!--
--><p>Echinomastus warnockii almost certainly occurs in Mexico but no specimens were seen in herbaria of Mexico or the United States.</p>
|tables=
|references=
}}<!--

--><!--

-->{{#Taxon:
name=Echinomastus warnockii
|author=
|authority=(L. D. Benson) Glass & R. A. Foster
|rank=species
|parent rank=genus
|synonyms=Sclerocactus warnockii
|basionyms=Neolloydia warnockii
|family=Cactaceae
|habitat=Chihuahuan desert scrub, low hills, gravelly bajadas, with sparse grasses and creosote bushes or in dense scrub with Texas false-agave, lechuguilla, and silverleaf, diverse substrates including limestone, tuff, and gypsum
|elevation=500-1000(-1400) m
|distribution=Tex.
|reference=None
|publication title=Cact. Succ. J. (Los Angeles)
|publication year=1975
|special status=
|source xml=https://jpend@bitbucket.org/aafc-mbb/fna-fine-grained-xml.git/src/287ef3db526bd807d435a3c7423ef2df1e951227/V4/V4_367.xml
|subfamily=Cactaceae subfam. Cactoideae
|genus=Echinomastus
|species=Echinomastus warnockii
|2n chromosome count=22
|abaxial central spine course=straight
|abaxial central spine orientation=porrect
|abaxial central spine some measurement=11mm;18.5mm
|adaxial central spine fixation or orientation=appressed
|adaxial central spine length=12mm;25mm
|adaxial central spine orientation=erect
|adaxial central spine width=0.4mm;0.5mm
|adaxial lateral spine arrangement=radial
|adaxial lateral spine atypical some measurement=11mm;14mm
|adaxial lateral spine some measurement=14mm;21mm
|areolar gland count=absent
|areole arrangement=apart
|areole atypical some measurement=16mm;20mm
|areole some measurement=12mm;16mm
|central spine atypical count=1;4
|central spine count=1
|flower length=2.3cm;2.6cm
|flower width=2.4cm;3.1cm
|fruit dehiscence=disintegrating;indehiscent
|fruit length=10
|fruit shape=coffin-shaped
|fruit width=6mm;10mm
|inner tepal coloration=olive-gray;pinkish brown;olive-gray;pinkish brown;dull;greenish tan;creamy white;white
|inner tepal length=1cm;2cm
|inner tepal width=1.5mm;4.8mm
|midline prominence=faint
|rib count=13
|spine arrangement=radial;radial;radial
|spine coloration=tan;pale gray pinkish or yellowish-brown usually tipped paler gray or blue-gray
|spine count=11;17
|spine length=8mm;13mm
|spine width=0.31mm;0.55mm
|stem atypical length=3cm;4cm
|stem atypical width=2.5cm;3cm
|stem length=4cm;10cm
|stem width=3cm;6.5cm
|stigma lobe coloration=yellow-green;green
}}<!--

-->[[Category:Treatment]][[Category:Echinomastus]]