View source for Yucca flaccida

{{Treatment/ID
|accepted_name=Yucca flaccida
|accepted_authority=Haworth
|publications={{Treatment/Publication
|title=Suppl. Pl. Succ.,
|place=34. 1819
|year=1819
}}
|common_names=Adam’s needle;beargrass
|basionyms=
|synonyms={{Treatment/ID/Synonym
|name=Yucca concava
|authority=Haworth
|rank=species
}} {{Treatment/ID/Synonym
|name=Yucca filamentosa var. concava
|authority=(Haworth) Baker
|rank=variety
}} {{Treatment/ID/Synonym
|name=Yucca filamentosa var. flaccida
|authority=(Haworth) Engelmann
|rank=variety
}} {{Treatment/ID/Synonym
|name=Yucca filamentosa var. glaucescens
|authority=(Haworth) Baker
|rank=variety
}} {{Treatment/ID/Synonym
|name=Yucca filamentosa var. puberula
|authority=(Haworth) Baker
|rank=variety
}} {{Treatment/ID/Synonym
|name=Yucca filamentosa var. smalliana
|authority=(Fernald) H. E. Ahles
|rank=variety
}} {{Treatment/ID/Synonym
|name=Yucca flaccida var. glaucescens
|authority=(Haworth) Trelease
|rank=variety
}} {{Treatment/ID/Synonym
|name=Yucca flaccida var. major
|authority=(Baker) Rehder
|rank=variety
}} {{Treatment/ID/Synonym
|name=Yucca freemanii
|authority=
|rank=species
}} {{Treatment/ID/Synonym
|name=Yucca glaucescens
|authority=
|rank=species
}} {{Treatment/ID/Synonym
|name=Yucca louisianensis
|authority=
|rank=species
}} {{Treatment/ID/Synonym
|name=Yucca orchioides var. major
|authority=Baker
|rank=variety
}} {{Treatment/ID/Synonym
|name=Yucca puberula
|authority=
|rank=species
}} {{Treatment/ID/Synonym
|name=Yucca smalliana
|authority=
|rank=species
}}
|hierarchy=Agavaceae;Yucca;Yucca flaccida
|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 flaccida]]</div></div>
|volume=Volume 26
|mention_page=page 425, 434, 437, 438
|treatment_page=page 433
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Plants </b>cespitose, forming small colonies, erect, acaulescent or rarely short-caulescent, 1–3 m; rosettes usually small, slowly dying after flowering. <b>Stems</b> simple, to 0.3 m. <b>Leaf</b> blade erect, proximal leaves becoming reflexed at middle in age, lanceolate, gradually tapering to apex, thin, widest near middle, 40–80 × 1–4(–5) cm, rigid or soft and limp, glabrous, margins entire, filiferous, apex spinose. <b>Inflorescences</b> paniculate, arising beyond rosettes, narrowly ovoid, 4–15 dm, mostly pubescent; bracts erect, proximal to 25 cm, distal 2–3 cm; peduncle scapelike, 0.5–2.8 m, 0.5–4 cm diam. <b>Flowers</b> pendent; tepals distinct, white, creamy white, or light greenish white, lanceolate to elliptic, 3–5 × 1–3 cm, mostly pubescent, apex obtuse; filaments 1.2–2.2 cm; pistil 1.5–3.8 cm; ovary pale green, 1.5 cm; style greenish white to white, papillate; stigmas lobed; pedicel 1.5–3 cm. <b>Fruits</b> erect, capsular, dehiscent, oblong, obpyriform, or conical, 3.5–4 × 1.5–2 cm, dehiscence septicidal. <b>Seeds</b> dull black, thin, 6–8 × 5–6 mm.</span><!--

-->{{Treatment/Body
|phenology=Flowering spring.
|habitat=Sand pine-scrub oak, mixed pine-hardwood woodlands, old fields, coastal sands, open or semiopen sites and pine plantations
|distribution=Ont.;Ala.;Ark.;Fla.;Ga.;Ill.;Ind.;Kans.;La.;Md.;Mich.;Miss.;Mo.;N.C.;Ohio;Okla.;Pa.;S.C.;Tenn.;Tex.;Wis.
|discussion=<p>Perhaps <i>Yucca flaccida</i> should be considered a variety of <i>Y. filamentosa</i>. The morphological differences are minor. The former has thinner, narrower leaves, and smaller, narrower flowers 4–5 cm long, whereas <i>Y. filamentosa</i> has thick, rigid leaves and flowers 5–7 cm long. <i>Yucca</i> freemanii was described from plants growing in northeastern Texas and southwestern Arkansas. These plants were reported to be glabrous, but some plants that are otherwise attributable to Y. freemanii are mostly pubescent through the infloresecence, and overall they fall within the variation range of <i>Y. flaccida</i>. <i>Yucca flaccida</i> is cultivated in some of the northern states and Canada, where it sometimes has naturalized.</p><!--
--><p>The results of DNA studies by K. H. Clary (1997) are incongruent with our treatment of <i>Yucca flaccida</i>, which warrants further research. It is the only dry-fruited species that groups with the fleshy-fruited ones in Clary’s consensus tree, where <i>Y. flaccida</i> and <i>Y. filamentosa</i> are quite distant. DNA variation indicates that Y. louisianensis is genetically distinct and more closely related to <i>Y. filamentosa</i> than to <i>Y. flaccida</i>.</p>
|tables=
|references=
}}<!--

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-->{{#Taxon:
name=Yucca flaccida
|authority=Haworth
|rank=species
|parent rank=genus
|synonyms=Yucca concava;Yucca filamentosa var. concava;Yucca filamentosa var. flaccida;Yucca filamentosa var. glaucescens;Yucca filamentosa var. puberula;Yucca filamentosa var. smalliana;Yucca flaccida var. glaucescens;Yucca flaccida var. major;Yucca freemanii;Yucca glaucescens;Yucca louisianensis;Yucca orchioides var. major;Yucca puberula;Yucca smalliana
|basionyms=
|family=Agavaceae
|phenology=Flowering spring.
|habitat=Sand pine-scrub oak, mixed pine-hardwood woodlands, old fields, coastal sands, open or semiopen sites and pine plantations
|distribution=Ont.;Ala.;Ark.;Fla.;Ga.;Ill.;Ind.;Kans.;La.;Md.;Mich.;Miss.;Mo.;N.C.;Ohio;Okla.;Pa.;S.C.;Tenn.;Tex.;Wis.
|reference=None
|publication title=Suppl. Pl. Succ.,
|publication year=1819
|special status=
|source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/f50eec43f223ca0e34566be0b046453a0960e173/coarse_grained_fna_xml/V26/V26_893.xml
|genus=Yucca
|species=Yucca flaccida
}}<!--

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