View source for Grusonia schottii

{{Treatment/ID
|accepted_name=Grusonia schottii
|accepted_authority=(Engelmann) H. Robinson
|publications={{Treatment/Publication
|title=Phytologia
|place=26: 176. 1973
|year=1973
}}
|common_names=Clav ellina
|basionyms={{Treatment/ID/Basionym
|name=Opuntia schottii
|authority=Engelmann
|rank=species
|publication_title=Proc. Amer. Acad. Arts
|publication_place=3: 304. 1856
}}
|synonyms={{Treatment/ID/Synonym
|name=Corynopuntia schottii
|authority=(Engelmann) F. M. Knuth
|rank=species
}}
|hierarchy=Cactaceae;Cactaceae subfam. Opuntioideae;Grusonia;Grusonia schottii
|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>[[Grusonia]]</div><div class="higher-taxon"><small>species</small>[[Grusonia schottii]]</div></div>
|volume=Volume 4
|mention_page=page 119
|treatment_page=page 121
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Shrubs,</b> forming mats, 7.5–9 cm. <b>Roots</b> diffuse. <b>Stem</b> segments clavate, (2–)3.5–6.5 × (1.5–)2–3 cm; tubercles 8–20 mm, 1–3.5 times longer than wide, not or little obscured by spines; areoles 2.5–4 mm in diam.; wool white to yellowish. <b>Spines</b> 11–17 per areole, mostly in distal areoles, spreading to deflexed, white, tan, or red-brown, longest 3–7 cm; major 3 abaxial spines divergent or deflexed, tan to brown, flattened to angular-flattened, sharp edged; major 2–3 adaxial spines ascending-divergent, red-brown, subterete to angular-flattened. <b>Glochids</b> adaxial in areole, yellowish white to yellow, to 7 mm. <b>Flowers</b>: inner tepals bright yellow, ± 20 mm; filaments yellow; style cream; stigma lobes cream or tinged pink. <b>Fruits</b> yellow, cylindric to ellipsoid, 30–50 × 10–30 mm, fleshy, spineless (sometimes with 3–6 white or red spines to 6 mm), yellow glochidiate; areoles 25–35. <b>Seeds</b> yellowish white to yellow, 4.5–5 × 3.5 mm, smooth. <b>2n</b> = 44.</span><!--

-->{{Treatment/Body
|phenology=Flowering late spring–early summer (Jun–Jul).
|habitat=Chihuahuan Desert, sandy or gravelly flats, low hills
|elevation=700-1200 m
|distribution=Tex.;Mexico (Coahuila).
|discussion=<p>Plants restricted to clay soils in Big Bend National Park, Brewster County, Texas, with more spines per areole than <i>Grusonia schottii</i>, have been named G. densispina (Ralston & Hilsenbeck) Pinkava. Much additional study is required to determine the relationship between such plants and <i>G. schottii</i>.</p>
|tables=
|references=
}}<!--

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-->{{#Taxon:
name=Grusonia schottii
|authority=(Engelmann) H. Robinson
|rank=species
|parent rank=genus
|synonyms=Corynopuntia schottii
|basionyms=Opuntia schottii
|family=Cactaceae
|phenology=Flowering late spring–early summer (Jun–Jul).
|habitat=Chihuahuan Desert, sandy or gravelly flats, low hills
|elevation=700-1200 m
|distribution=Tex.;Mexico (Coahuila).
|reference=None
|publication title=Phytologia
|publication year=1973
|special status=
|source xml=https://bitbucket.org/aafc-mbb/fna-data-curation/src/2e0870ddd59836b60bcf96646a41e87ea5a5943a/coarse_grained_fna_xml/V4/V4_233.xml
|subfamily=Cactaceae subfam. Opuntioideae
|genus=Grusonia
|species=Grusonia schottii
}}<!--

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