Difference between revisions of "Willkommia texana"

Hitchc.
Common names: Willkommia
Treatment appears in FNA Volume 25. Treatment on page 228.
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{{Treatment/ID
 
{{Treatment/ID
 
|accepted_name=Willkommia texana
 
|accepted_name=Willkommia texana
|accepted_authority=Hitchc
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|accepted_authority=Hitchc.
 
|publications=
 
|publications=
 
|common_names=Willkommia
 
|common_names=Willkommia
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|distribution=Okla.;Tex.
 
|distribution=Okla.;Tex.
|discussion=<p>Willkommia texana grows on clay pans, alkaline flats, and sandy soils, in open or bare areas of Texas and (rarely) Oklahoma and, as a disjunct, in Argentina. The Oklahoma record may represent a recent introduction. North American plants belong to Willkommia texana Hitchc. var. texana. They differ from the Argentinean variety, W. texana var. stolonifera Parodi, in being cespi¬tose rather than stoloniferous.</p>
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|discussion=<p><i>Willkommia texana</i> grows on clay pans, alkaline flats, and sandy soils, in open or bare areas of Texas and (rarely) Oklahoma and, as a disjunct, in Argentina. The Oklahoma record may represent a recent introduction. North American plants belong to <i>Willkommia texana</i> Hitchc. <i></i>var.<i> texana</i>. They differ from the Argentinean variety, <i>W. texana</i> var. stolonifera Parodi, in being cespi¬tose rather than stoloniferous.</p>
 
|tables=
 
|tables=
 
|references=
 
|references=
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-->{{#Taxon:
 
name=Willkommia texana
 
name=Willkommia texana
|author=
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|authority=Hitchc.
|authority=Hitchc
 
 
|rank=species
 
|rank=species
 
|parent rank=genus
 
|parent rank=genus
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|basionyms=
 
|basionyms=
 
|family=Poaceae
 
|family=Poaceae
|illustrator=Linda A. Vorobik and Karen Klitz
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|illustrator=Linda A. Vorobik;Karen Klitz
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|illustration copyright=Utah State University
 
|distribution=Okla.;Tex.
 
|distribution=Okla.;Tex.
 
|reference=None
 
|reference=None
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|publication year=
 
|publication year=
 
|special status=
 
|special status=
|source xml=https://bibilujan@bitbucket.org/aafc-mbb/fna-data-curation.git/src/314eb390f968962f596ae85f506b4b3db8683b1b/coarse_grained_fna_xml/V25/V25_360.xml
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|source xml=https://bitbucket.org/aafc-mbb/fna-data-curation/src/200273ad09963decb8fc72550212de541d86569d/coarse_grained_fna_xml/V25/V25_360.xml
 
|subfamily=Poaceae subfam. Chloridoideae
 
|subfamily=Poaceae subfam. Chloridoideae
 
|tribe=Poaceae tribe Cynodonteae
 
|tribe=Poaceae tribe Cynodonteae

Latest revision as of 16:46, 8 December 2021

Plants perennial; cespitose or stoloniferous. Culms (12)17-65 cm, glabrous; nodes 4-6(7), glabrous. Leaves cauline; sheaths mostly glabrous, upper margins sometimes pubescent; ligules 0.3-0.6 mm, truncate; blades (1)4-21 cm long, 0.6-3.5 mm wide, involute to flat, glabrous, margins pubescent. Panicles (6)7-34(44) cm long, 4-10 mm wide; branches 4-13(20), 1-8 cm, appressed, each branch usually terminating in a reduced, sterile spikelet, lowest branches usually partially enclosed in the uppermost sheaths at maturity. Spikelets 3.5-5 mm; disarticulation usually below the glumes, sometimes the first glume persistent. Lower glumes 2-3.5 mm, glabrous; upper glumes 3.3-4.8 mm, glabrous and smooth below, scabridulous above; lemmas 3.0-4.2 mm, usually appressed pilose between the veins, lateral veins obscure, midveins sometimes excurrent; paleas 2.5-3.4 mm, pubescent between the veins; anthers 3, 0.3-0.9(1.1) mm, yellow-orange. Caryopses 1.4-2 mm. 2n = 60.

Discussion

Willkommia texana grows on clay pans, alkaline flats, and sandy soils, in open or bare areas of Texas and (rarely) Oklahoma and, as a disjunct, in Argentina. The Oklahoma record may represent a recent introduction. North American plants belong to Willkommia texana Hitchc. var. texana. They differ from the Argentinean variety, W. texana var. stolonifera Parodi, in being cespi¬tose rather than stoloniferous.

Selected References

None.

Lower Taxa

None.