View source for Yucca arkansana

{{Treatment/ID
|accepted_name=Yucca arkansana
|accepted_authority=Trelease
|publications={{Treatment/Publication
|title=Rep. (Annual) Missouri Bot. Gard.
|place=13: 63. 1902
|year=1902
}}
|common_names=Arkansas yucca
|basionyms=
|synonyms={{Treatment/ID/Synonym
|name=Yucca angustifolia var. mollis
|authority=Engelmann
}} {{Treatment/ID/Synonym
|name=Yucca arkansana var. paniculata
|authority=McKelvey
}} {{Treatment/ID/Synonym
|name=Yucca glauca var. mollis
|authority=Engelmann ex Branner & Coville
}}
|hierarchy=Agavaceae;Yucca;Yucca arkansana
|hierarchy_nav=<div class="higher-taxa"><div class="higher-taxon"><small>family</small>[[Agavaceae]]</div><div class="higher-taxon"><small>genus</small>[[Yucca]]</div><div class="higher-taxon"><small>species</small>[[Yucca arkansana]]</div></div>
|volume=Volume 26
|mention_page=page 426, 431, 437, 438
|treatment_page=page 436
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Plants </b>forming small colonies, acaulescent or caulescent; rosettes usually small. <b>Stems</b> decumbent, short, to 0.2 m. <b>Leaf</b> blade mostly yellowish green, flattened, grasslike, concavo-convex, widest near middle, 20–60(–70) × 0.7–2(–2.5) cm, flexible, margins entire, curled, filiferous, apex long, tapering to short spines 1.6–3.2 mm. <b>Inflorescences</b> racemose, occasionally paniculate proximally, arising within rosettes or at rosette level, 3–6(–8) dm, glabrous; bracts erect; peduncle scapelike, 0.2–0.5(–0.6) m, 0.3–0.7(–1.3) cm diam. <b>Flowers</b> pendent; perianth globose; tepals distinct, greenish white, elliptic to orbicular or oblong, 3.2–6.5 × 2–5 cm; filaments 1.3–2.5 cm; anthers 3.2 mm; pistil 2.5–2.8(–3.2) cm; style dark green, 7–13 mm, tumid; stigmas lobed. <b>Fruits</b> erect, capsular, dehiscent, oblong-cylindric to obovoid, constricted near middle, stout, 4–6.5(–7) × 2–3 cm, dehiscence septicidal. <b>Seeds</b> dull black, thin, ca. 1 cm diam.</span><!--

-->{{Treatment/Body
|phenology=Flowering spring.
|habitat=Gravelly soil, limestone outcrops, rocky hillsides, prairies
|elevation=100–400 m
|distribution=Ark.;Kans.;Mo.;Okla.;Tex.
|discussion=<p><i>Yucca arkansana</i> shows considerable variation, particularly in the eastern part of its range. S. D. McKelvey (1938–1947) described <i></i>var.<i> paniculata</i> and suggested that it is an eastern extension of the species with a taller, paniculate, and pubescent inflorescence. <i>Yucca arkansana</i> approaches Y. louisianensis, which we have reduced to synonymy under <i>Y. flaccida</i>. K. H. Clary’s (1997) DNA consensus tree places <i>Y. arkansana</i> and Y. louisianensis adjacent to one another.</p>
|tables=
|references=
}}<!--

--><!--

-->{{#Taxon:
name=Yucca arkansana
|author=
|authority=Trelease
|rank=species
|parent rank=genus
|synonyms=Yucca angustifolia var. mollis;Yucca arkansana var. paniculata;Yucca glauca var. mollis
|basionyms=
|family=Agavaceae
|phenology=Flowering spring.
|habitat=Gravelly soil, limestone outcrops, rocky hillsides, prairies
|elevation=100–400 m
|distribution=Ark.;Kans.;Mo.;Okla.;Tex.
|reference=None
|publication title=Rep. (Annual) Missouri Bot. Gard.
|publication year=1902
|special status=
|source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/8f726806613d60c220dc4493de13607dd3150896/coarse_grained_fna_xml/V26/V26_902.xml
|genus=Yucca
|species=Yucca arkansana
}}<!--

-->[[Category:Treatment]][[Category:Yucca]]