View source for Cylindropuntia arbuscula

{{Treatment/ID
|accepted_name=Cylindropuntia arbuscula
|accepted_authority=(Engelmann) F. M. Knuth in C. Backeberg and F. M. Knuth
|publications={{Treatment/Publication
|title=in C. Backeberg and F. M. Knuth, Kaktus-ABC,
|place=123. 1935
|year=1935
}}
|common_names=Pencil cholla
|basionyms={{Treatment/ID/Basionym
|name=Opuntia arbuscula
|authority=Engelmann
|publication_title=Proc. Amer. Acad. Arts
|publication_place=3: 309. 1856
}}
|synonyms=
|hierarchy=Cactaceae;Cactaceae subfam. Opuntioideae;Cylindropuntia;Cylindropuntia arbuscula
|hierarchy_nav=<div class="higher-taxa"><div class="higher-taxon"><small>family</small>[[Cactaceae]]</div><div class="higher-taxon"><small>subfamily</small>[[Cactaceae subfam. Opuntioideae]]</div><div class="higher-taxon"><small>genus</small>[[Cylindropuntia]]</div><div class="higher-taxon"><small>species</small>[[Cylindropuntia arbuscula]]</div></div>
|volume=Volume 4
|mention_page=page 104, 109
|treatment_page=page 106
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Trees </b>or shrubs, densely branched, 0.5–3 m. <b>Stem</b> segments green, sometimes purple tinged, 6–10.5 × 0.5–1.3 cm; tubercles narrowly elongate, appearing as wrinkles when dry, 1–2 cm; areoles circular, 2–3 mm in diam.; wool tan to brown, aging gray to black. <b>Spines</b> 0–2(–3) per areole, sparsely distributed along stem, usually deflexed, pale yellow or red-brown aging black, stout, the longest 0.8–3.5(–5) cm; sheaths loose fitting, yellowish brown. <b>Glochids</b> in adaxial tuft and marginal, encircling areole, pale yellow. <b>Flowers</b>: inner tepals green- or orange-bronze, spatulate, 17–20 mm, apiculate; filaments dark green-bronze; anthers yellow; style whitish basally to light orange apically; stigma lobes very pale green. <b>Fruits</b> green, becoming yellowish apically, sometimes tinged red to purplish at areoles, commonly sterile, then narrow, tuberculate, to 2.5 cm, fertile ones stipitate, obconic, 20–50 × 15–35 mm, fleshy, becoming smooth, spineless; umbilicus 3–4 mm deep; areoles 15–17(–34). <b>Seeds</b> pale yellow, angularly circular to oblong, thick, 3–5 mm diam., lumpy; girdle smooth, broad, not protruding. <b>2n</b> = 66.</span><!--

-->{{Treatment/Body
|phenology=Flowering spring (Apr–Jun).
|habitat=Sonoran Desert flats, bajadas, desert scrub
|elevation=300-1000 m
|distribution=Ariz.;Mexico (Sonora).
|discussion=<p><i>Cylindropuntia arbuscula</i> forms hybrids with <i>C. leptocaulis</i> in south-central Arizona; those hybrids have narrow, obscurely tuberculate stems and reddish fruits nearly the size of those of <i>C. arbuscula</i> and chromosome number of 2n = 55. Hybrids between <i>C. arbuscula</i> and <i>C. spinosior</i> [= C. ×neoarbuscula (Griffiths) F. M. Knuth] have large green fruits, which often split open, and on stem segments distal areoles that usually bear three or four spines to 2.5 cm. Hybrids between <i>C. arbuscula</i> and <i>C. versicolor</i> [= C. ×vivipara (Rose) F. M. Knuth] have large green fruits, which often split open, and distal stem segment areoles that bear one or two spines to 1.5 cm.</p>
|tables=
|references=
}}<!--

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-->{{#Taxon:
name=Cylindropuntia arbuscula
|author=
|authority=(Engelmann) F. M. Knuth in C. Backeberg and F. M. Knuth
|rank=species
|parent rank=genus
|synonyms=
|basionyms=Opuntia arbuscula
|family=Cactaceae
|phenology=Flowering spring (Apr–Jun).
|habitat=Sonoran Desert flats, bajadas, desert scrub
|elevation=300-1000 m
|distribution=Ariz.;Mexico (Sonora).
|reference=None
|publication title=in C. Backeberg and F. M. Knuth, Kaktus-ABC,
|publication year=1935
|special status=
|source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/f6b125a955440c0872999024f038d74684f65921/coarse_grained_fna_xml/V4/V4_197.xml
|subfamily=Cactaceae subfam. Opuntioideae
|genus=Cylindropuntia
|species=Cylindropuntia arbuscula
}}<!--

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