View source for Echinocereus rigidissimus var. rigidissimus

{{Treatment/ID
|accepted_name=Echinocereus rigidissimus var. rigidissimus
|accepted_authority=
|publications=
|basionyms=
|synonyms=
|hierarchy=Cactaceae;Cactaceae subfam. Cactoideae;Echinocereus;Echinocereus rigidissimus;Echinocereus rigidissimus var. rigidissimus
|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>[[Echinocereus]]</div><div class="higher-taxon"><small>species</small>[[Echinocereus rigidissimus]]</div><div class="higher-taxon"><small>variety</small>[[Echinocereus rigidissimus var. rigidissimus]]</div></div>
|volume=Volume 4
|mention_page=page 172
|treatment_page=page 174
}}<!--

--><span class="statement" id="st-d0_s0" data-properties="whole_organism architecture;whole_organism growth form"><b>Plants </b>unbranched (very rarely few branched).</span> <span class="statement" id="st-d0_s1" data-properties="stem orientation;stem height or length or size;stem shape;stem atypical length;stem length;stem width"><b>Stems </b>erect, short cylindric, 6–18 (–30) × 9–11 cm;</span> <span class="statement" id="st-d0_s2" data-properties="rib atypical quantity;rib atypical quantity;rib quantity;crest shape">ribs (15–) 18–23 (–26), crests slightly undulate;</span> <span class="statement" id="st-d0_s3" data-properties="areole some measurement;areole arrangement">areoles 3–5 mm apart.</span> <span class="statement" id="st-d0_s4" data-properties="spine quantity;spine arrangement;spine course;spine course;spine fixation or orientation;spine arrangement;spine coloration;spine coloration;spine some measurement;band arrangement"><b>Spines </b>15–23 per areole, all radial, straight or slightly curved toward stem, tightly appressed, pectinately arranged, bright pink or pink-and-white in alternating bands of color around stem, 6–10 mm.</span> <span class="statement" id="st-d0_s5" data-properties="flower length;flower width"><b>Flowers </b>6–8 × 6–9 cm;</span> <span class="statement" id="st-d0_s6" data-properties="flower tube length;flower tube width">flower tube to 30 × 15–45 mm;</span> <span class="statement" id="st-d0_s7" data-properties="tube hair some measurement">flower tube hairs to 2 mm;</span> <span class="statement" id="st-d0_s8" data-properties="inner tepal coloration;inner tepal coloration;inner tepal coloration;inner tepal length;inner tepal width;tip width;tip fragility">inner tepals bright-rose-pink or magenta, conspicuously white banded proximally, 40–50 × 10–15 mm, tips relatively thin, delicate;</span> <span class="statement" id="st-d0_s9" data-properties="nectar chamber coloration;nectar chamber some measurement">anthers yellow nectar chamber 3–5 mm.</span> <span class="statement" id="st-d0_s10" data-properties="fruit coloration;fruit coloration;fruit coloration;fruit some measurement"><b>Fruits </b>greenish or dark purplish brownish, 2.5–5 cm, pulp white.</span> <span class="statement" id="st-d0_s11" data-properties="pulp coloration;2n chromosome quantity">2n = 22.</span><!--

-->{{Treatment/Body
|phenology=Flowering late spring–summer (May–Jul); fruiting 3 months after flowering.
|habitat=Gravelly hills, steep canyonsides, semidesert grasslands, oak woodlands, interior chaparral, igneous substrates
|elevation=1200-1600 m
|distribution=Ariz.;N.Mex.;Mexico (Chihuahua);Mexico (Sonora)
|discussion=<p>Echinocereus rigidissimus, lacking central spines, belongs to the E. reichenbachii group, unrelated to the superficially similar E. pectinatus group, which has at least microscopically visible stubs of central spines. It sometimes occurs with E. pseudopectinatus but without evidence of hybridization. The reported habitat preference for limestone (L. D. Benson 1969) is erroneous; this species is a calcifuge, preferring soils poor in lime and usually acid.</p>
|tables=
|references=
}}<!--

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-->{{#Taxon:
name=Echinocereus rigidissimus var. rigidissimus
|authority=
|rank=variety
|parent rank=species
|synonyms=
|basionyms=
|family=Cactaceae
|phenology=Flowering late spring–summer (May–Jul); fruiting 3 months after flowering.
|habitat=Gravelly hills, steep canyonsides, semidesert grasslands, oak woodlands, interior chaparral, igneous substrates
|elevation=1200-1600 m
|distribution=Ariz.;N.Mex.;Mexico (Chihuahua);Mexico (Sonora)
|reference=None
|publication title=
|publication year=
|special status=
|source xml=https://bibilujan@bitbucket.org/aafc-mbb/fna-fine-grained-xml.git/src/84153f6d59a0a91d69695978a64cee7560374f8e/V4/V4_332.xml
|subfamily=Cactaceae subfam. Cactoideae
|genus=Echinocereus
|species=Echinocereus rigidissimus
|variety=Echinocereus rigidissimus var. rigidissimus
|2n chromosome quantity=22
|areole arrangement=apart
|areole some measurement=3mm;5mm
|band arrangement=alternating
|crest shape=undulate
|flower length=6cm;8cm
|flower tube length=0mm;30mm
|flower tube width=15mm;45mm
|flower width=6cm;9cm
|fruit coloration=brownish;dark purplish;greenish
|fruit some measurement=2.5cm;5cm
|inner tepal coloration=white banded;magenta;bright-rose-pink
|inner tepal length=40mm;50mm
|inner tepal width=10mm;15mm
|nectar chamber coloration=yellow
|nectar chamber some measurement=3mm;5mm
|pulp coloration=white
|rib atypical quantity=23;26
|rib quantity=18;23
|spine arrangement=arranged;radial
|spine coloration=pink-and-white;bright pink
|spine course=curved;straight
|spine fixation or orientation=appressed
|spine quantity=15;23
|spine some measurement=6mm;10mm
|stem atypical length=18cm;30cm
|stem height or length or size=short
|stem length=6cm;18cm
|stem orientation=erect
|stem shape=cylindric
|stem width=9cm;11cm
|tip fragility=delicate
|tip width=thin
|tube hair some measurement=0mm;2mm
|whole_organism architecture=unbranched
|whole_organism growth form=plant
}}<!--

-->[[Category:Treatment]][[Category:Echinocereus rigidissimus]]